I am a dual boot user, and I am facing boot issues.

Initially after setting up the dual boot, Windows did not appear in the GRUB boot menu even after enabling OS Prober. Because of this I reinstalled Windows 11, but after the reinstall GRUB disappeared completely.

I then watched several YouTube tutorials and tried fixing it by mounting the Linux partition and running grub-install. Although the installation completed successfully, my computer still booted directly into Windows.

After that I used Boot-Repair, which also reported that the repair was successful, but the system continued booting straight into Windows. Finally, I reinstalled Ubuntu, and despite the installation completing successfully, the computer still boots directly into Windows instead of showing the GRUB boot menu.

I just upgraded from 24.04 LTS to 26.04 via do-release-upgrade -d and noticed that all my virtual environments (venvs) are empty now. Whichever third-party package I try to import, it won't be found. This includes pip. The reason is the upgrade from Python 3.12 to Python 3.14 that occurred as part of the upgrade.

What I tried:

python -m venv --upgrade /path/to/.venv

This at least installed pip inside the venv, but pip list only shows pip as the installed package.

I inspected the folders of one of the venvs and noticed that the lib folder for the latest Python version doesn't contain any sub-folders except for pip, whereas the lib folder for older Python versions do contain quite a lot of dependencies.

Is there any standard way of getting my venv restored?

I just upgraded from 24.04 LTS to 26.04 via sudo do-release-upgrade -d and immediately faced some issues: Bluetooth audio was flawless before the upgrade, but after the upgrade it stutters every few seconds slightly. Overall I still can hear the music clearly, except for these short irregular stutters. These stutters appear regardless of the music app.

Did anyone have had similar issues? Do you have any idea how to troubleshoot this?

After I've upgraded from Ubuntu 24.04 to 26.04, the ls -l command behaves strangely.

I have a folder that is sync'ed with Dropbox, and files in that folder automatically get the extra attribute user.com.dropbox.attrs.

When I do a "ls -l" in a Dropbox folder, the output is something like this:

-rw-r--r--+                            1 user group      574 Nov 24  2008 z.txt

with a lot of extra spaces after the '+', which indicates that additional attributes are present.

Strangely, the number of extra spaces depends on the number of files in the listing.

This is quite annoying. Why does ls behave in this way, and how do I avoid it?

EDIT

As requested, here is a complete output from a directory using ls -l:

total 0
-rw-rw-r--+         1 user group 0 May 27 10:44 q1
-rw-rw-r--+         1 user group 0 May 27 10:44 q2
-rw-rw-r--+         1 user group 0 May 27 10:44 q3
-rw-rw-r--+         1 user group 0 May 27 10:44 q4
-rw-rw-r--+         1 user group 0 May 27 10:44 q5
-rw-rw-r--+         1 user group 0 May 27 10:44 q6
-rw-rw-r--+         1 user group 0 May 27 10:44 q7
-rw-rw-r--+         1 user group 0 May 27 10:44 q8
-rw-rw-r--+         1 user group 0 May 27 10:44 q9

And the same directory listed with gnuls -l:

total 0
-rw-rw-r-- 1 user group 0 May 27 10:44 q1
-rw-rw-r-- 1 user group 0 May 27 10:44 q2
-rw-rw-r-- 1 user group 0 May 27 10:44 q3
-rw-rw-r-- 1 user group 0 May 27 10:44 q4
-rw-rw-r-- 1 user group 0 May 27 10:44 q5
-rw-rw-r-- 1 user group 0 May 27 10:44 q6
-rw-rw-r-- 1 user group 0 May 27 10:44 q7
-rw-rw-r-- 1 user group 0 May 27 10:44 q8
-rw-rw-r-- 1 user group 0 May 27 10:44 q9

Furthermore, if I do a ls -l q[1234], I get this:

-rw-rw-r--+    1 user group 0 May 27 10:44 q1
-rw-rw-r--+    1 user group 0 May 27 10:44 q2
-rw-rw-r--+    1 user group 0 May 27 10:44 q3
-rw-rw-r--+    1 user group 0 May 27 10:44 q4

Note that the number of spaces is smaller when the number of listed files is smaller.

(user and group have been replaced for privacy.)

This is more a bash script question.

Im trying to set a variable from a multiline file in github

cat config.yaml | gh variable set TEST --org .... --body -

But this sets the value as '-'

same thing with

gh variable set TEST --org .... --body - < config.yaml

and this

cat config.yaml | gh variable set TEST --org .... --body '$(cat config.yaml)'

sets the value literally as '$(config.yaml)'

how can I set the contents of this file in bash?

After upgrading from Ubuntu 25. to Ubuntu 26.04 LTS, randomly when starting Thunderbird the screen freezes and says "kernel panic fatal exception in interrupt" After restart it continues to work, but randomly crashes again?

I know this is likely due to the current DDOS attack on Ubuntu's services, but I was hoping for any possible workarounds or solutions I could do on my end for this.

Basically, for the past few weeks now I have been completely unable to update packages on my Ubuntu server, with any attempts to connect to "archive.ubuntu.com" or "security.ubuntu.com" completely failing. The server is still able to reach them with a ping, but there is a 10 second delay before any returns are received which I assume is Cloudflare's DDOS protection.

The most annoying specific issue this has caused is that my Plex server remote access has become completely non-functional due to this situation. I'm not sure if the Ubuntu version of Plex is somehow reliant on Ubuntu's services to function, but several fresh re-installs seem to have changed nothing, and I'm unable to even claim the server.

Alternatively, if anyone has suggestions for a Plex alternative that doesn't require a VPN to access it remotely, I'm all ears.

sudo apt update
Ign:1 file:/cdrom resolute InRelease
Err:2 file:/cdrom resolute Release
  File not found - /cdrom/dists/resolute/Release (2: No such file or directory)
Hit:3 http://id.archive.ubuntu.com/ubuntu resolute InRelease
Hit:4 http://id.archive.ubuntu.com/ubuntu resolute-updates InRelease
Hit:5 http://id.archive.ubuntu.com/ubuntu resolute-backports InRelease
Get:6 http://security.ubuntu.com/ubuntu resolute-security InRelease [136 kB]
Error: The repository 'file:/cdrom resolute Release' no longer has a Release file.
Notice: Updating from such a repository can't be done securely, and is therefore disabled by default.
Notice: See apt-secure(8) manpage for repository creation and user configuration details.

I running ubuntu 26.04 that i installed few weeks ago. Since three days ago i always get the firmware uefi dbx update notification (you can see the picture in the link below). As i know, updating a firmware can have some risk if getting failed and i dont have much time to reinstalling ubuntu. Should i update or ignored it? If anyone can explain/suggest i really apreciated, thank you

I have an internal modem (Fibocom L850-GL) in my laptop (HP ZBook 15 G6), and a SIM card. I checked he WANN in Windows (dual boot) and it's okay, but the WWAN refuses to connect in Ubuntu (26.04). It might be obvious, but I did not find the solution... Some help would be highly appreciated.

Here is my provider data for the APN:

• name : Orange World
• APN: orange
• username: orange
• password: orange
• MCC : 208
• MNC : 01
• authentication: pap
• Type of mobile virtual network operator : SPN
• Value of the mobile virtual network operator : Orange F

I'm abroad, and the roaming is activated (at least, should be).

For my WWAN, I created a profile ("Orange Internet") including my provider data but MCC and MNC values are not included in this profile: I don't know if they are compulsory and did not find where to fill them in Ubuntu.

Bellow is the command line result and the logs:

st@ZBook-15-G6:~$ nmcli con up id Orange\ Internet 
Erreur : l'activation de la connexion a échoué : Échec de la sélection de l'APN spécifié
Astuce : utiliser « journalctl -xe NM_CONNECTION=8eb6d626-7bc3-4857-a36e-4d13a8a8f020 + NM_DEVICE=wwan0at1 » pour obtenir plus d'informations.

stephane@ZBook-15-G6:~$ journalctl -b -e NM_DEVICE=wwan0at1 | cat
mai 27 08:20:43 ZBook-15-G6 NetworkManager[2413]: <info>  [1779862843.0722] manager: (wwan0at1): new Broadband device (/org/freedesktop/NetworkManager/Devices/4)
mai 27 08:20:43 ZBook-15-G6 NetworkManager[2413]: <info>  [1779862843.0724] device (wwan0at1): state change: unmanaged -> unavailable (reason 'managed', managed-type: 'external')
mai 27 08:20:43 ZBook-15-G6 NetworkManager[2413]: <warn>  [1779862843.0725] device (wwan0at1): error setting IPv4 forwarding to '0': Succès
mai 27 08:20:43 ZBook-15-G6 NetworkManager[2413]: <info>  [1779862843.0726] device (wwan0at1): modem state 'enabling'
mai 27 08:20:43 ZBook-15-G6 NetworkManager[2413]: <info>  [1779862843.0728] device (wwan0at1): state change: unavailable -> disconnected (reason 'none', managed-type: 'full')
mai 27 08:20:43 ZBook-15-G6 NetworkManager[2413]: <info>  [1779862843.0737] device (wwan0at1): Activation: starting connection 'Orange Internet' (8eb6d626-7bc3-4857-a36e-4d13a8a8f020)
mai 27 08:20:43 ZBook-15-G6 NetworkManager[2413]: <info>  [1779862843.0738] device (wwan0at1): state change: disconnected -> prepare (reason 'none', managed-type: 'full')
mai 27 08:20:43 ZBook-15-G6 NetworkManager[2413]: <info>  [1779862843.0741] device (wwan0at1): state change: prepare -> need-auth (reason 'none', managed-type: 'full')
mai 27 08:20:43 ZBook-15-G6 NetworkManager[2413]: <info>  [1779862843.0747] device (wwan0at1): state change: need-auth -> prepare (reason 'none', managed-type: 'full')
mai 27 08:20:51 ZBook-15-G6 NetworkManager[2413]: <info>  [1779862851.0471] device (wwan0at1): state change: prepare -> failed (reason 'gsm-apn-failed', managed-type: 'full')
mai 27 08:20:51 ZBook-15-G6 NetworkManager[2413]: <warn>  [1779862851.0480] device (wwan0at1): Activation: failed for connection 'Orange Internet'
mai 27 08:20:51 ZBook-15-G6 NetworkManager[2413]: <info>  [1779862851.0484] device (wwan0at1): state change: failed -> disconnected (reason 'none', managed-type: 'full')
mai 27 08:20:51 ZBook-15-G6 NetworkManager[2413]: <warn>  [1779862851.0485] device (wwan0at1): error setting IPv4 forwarding to '0': Succès
mai 27 08:21:24 ZBook-15-G6 NetworkManager[2413]: <info>  [1779862884.6257] device (wwan0at1): Activation: starting connection 'Orange Internet' (8eb6d626-7bc3-4857-a36e-4d13a8a8f020)
mai 27 08:21:24 ZBook-15-G6 NetworkManager[2413]: <info>  [1779862884.6262] device (wwan0at1): state change: disconnected -> prepare (reason 'none', managed-type: 'full')
mai 27 08:21:24 ZBook-15-G6 NetworkManager[2413]: <info>  [1779862884.6274] device (wwan0at1): state change: prepare -> need-auth (reason 'none', managed-type: 'full')
mai 27 08:21:24 ZBook-15-G6 NetworkManager[2413]: <info>  [1779862884.6300] device (wwan0at1): state change: need-auth -> prepare (reason 'none', managed-type: 'full')
mai 27 08:21:32 ZBook-15-G6 NetworkManager[2413]: <info>  [1779862892.0439] device (wwan0at1): state change: prepare -> failed (reason 'gsm-apn-failed', managed-type: 'full')
mai 27 08:21:32 ZBook-15-G6 NetworkManager[2413]: <warn>  [1779862892.0441] device (wwan0at1): Activation: failed for connection 'Orange Internet'
mai 27 08:21:32 ZBook-15-G6 NetworkManager[2413]: <info>  [1779862892.0442] device (wwan0at1): state change: failed -> disconnected (reason 'none', managed-type: 'full')
mai 27 08:21:32 ZBook-15-G6 NetworkManager[2413]: <warn>  [1779862892.0442] device (wwan0at1): error setting IPv4 forwarding to '0': Succès
mai 27 08:21:46 ZBook-15-G6 NetworkManager[2413]: <info>  [1779862906.3717] device (wwan0at1): Activation: starting connection 'Orange Internet' (8eb6d626-7bc3-4857-a36e-4d13a8a8f020)
mai 27 08:21:46 ZBook-15-G6 NetworkManager[2413]: <info>  [1779862906.3718] device (wwan0at1): state change: disconnected -> prepare (reason 'none', managed-type: 'full')
mai 27 08:21:46 ZBook-15-G6 NetworkManager[2413]: <info>  [1779862906.3721] device (wwan0at1): state change: prepare -> need-auth (reason 'none', managed-type: 'full')
mai 27 08:21:46 ZBook-15-G6 NetworkManager[2413]: <info>  [1779862906.3727] device (wwan0at1): state change: need-auth -> prepare (reason 'none', managed-type: 'full')
mai 27 08:21:54 ZBook-15-G6 NetworkManager[2413]: <info>  [1779862914.0491] device (wwan0at1): state change: prepare -> failed (reason 'gsm-apn-failed', managed-type: 'full')
mai 27 08:21:54 ZBook-15-G6 NetworkManager[2413]: <warn>  [1779862914.0505] device (wwan0at1): Activation: failed for connection 'Orange Internet'
mai 27 08:21:54 ZBook-15-G6 NetworkManager[2413]: <info>  [1779862914.0510] device (wwan0at1): state change: failed -> disconnected (reason 'none', managed-type: 'full')
mai 27 08:21:54 ZBook-15-G6 NetworkManager[2413]: <warn>  [1779862914.0511] device (wwan0at1): error setting IPv4 forwarding to '0': Succès

st@ZBook-15-G6:~$ nmcli connection show Orange\ Internet 

connection.id:                          Orange Internet
connection.uuid:                        8eb6d626-7bc3-4857-a36e-4d13a8a8f020
connection.stable-id:                   --
connection.type:                        gsm
connection.interface-name:              wwan0at1
connection.autoconnect:                 oui
connection.autoconnect-priority:        0
connection.autoconnect-retries:         -1 (default)
connection.multi-connect:               0 (default)
connection.auth-retries:                -1
connection.timestamp:                   0
connection.permissions:                 --
connection.zone:                        --
connection.controller:                  --
connection.master:                      --
connection.slave-type:                  --
connection.port-type:                   --
connection.autoconnect-slaves:          -1 (default)
connection.autoconnect-ports:           -1 (default)
connection.down-on-poweroff:            -1 (default)
connection.secondaries:                 --
connection.gateway-ping-timeout:        0
connection.ip-ping-timeout:             0
connection.ip-ping-addresses:           --
connection.ip-ping-addresses-require-all:-1 (default)
connection.metered:                     inconnu
connection.lldp:                        default
connection.mdns:                        -1 (default)
connection.llmnr:                       -1 (default)
connection.dns-over-tls:                -1 (default)
connection.mptcp-flags:                 0x0 (default)
connection.wait-device-timeout:         -1
connection.wait-activation-delay:       -1
ipv4.method:                            auto
ipv4.dns:                               --
ipv4.dns-search:                        --
ipv4.dns-options:                       --
ipv4.dns-priority:                      120
ipv4.addresses:                         --
ipv4.gateway:                           --
ipv4.routes:                            --
ipv4.route-metric:                      1050
ipv4.route-table:                       0 (unspec)
ipv4.routing-rules:                     --
ipv4.replace-local-rule:                -1 (default)
ipv4.dhcp-send-release:                 -1 (default)
ipv4.routed-dns:                        -1 (default)
ipv4.ignore-auto-routes:                non
ipv4.ignore-auto-dns:                   non
ipv4.dhcp-client-id:                    --
ipv4.dhcp-iaid:                         --
ipv4.dhcp-dscp:                         --
ipv4.dhcp-timeout:                      0 (default)
ipv4.dhcp-send-hostname-deprecated:     oui
ipv4.dhcp-send-hostname:                -1 (default)
ipv4.forwarding:                        -1 (default)
ipv4.dhcp-hostname:                     --
ipv4.dhcp-fqdn:                         --
ipv4.dhcp-hostname-flags:               0x0 (none)
ipv4.never-default:                     non
ipv4.may-fail:                          oui
ipv4.required-timeout:                  -1 (default)
ipv4.dad-timeout:                       -1 (default)
ipv4.dhcp-vendor-class-identifier:      --
ipv4.dhcp-ipv6-only-preferred:          -1 (default)
ipv4.link-local:                        0 (default)
ipv4.dhcp-reject-servers:               --
ipv4.auto-route-ext-gw:                 -1 (default)
ipv4.shared-dhcp-range:                 --
ipv4.shared-dhcp-lease-time:            0 (default)
ipv6.method:                            auto
ipv6.dns:                               --
ipv6.dns-search:                        --
ipv6.dns-options:                       --
ipv6.dns-priority:                      0
ipv6.addresses:                         --
ipv6.gateway:                           --
ipv6.routes:                            --
ipv6.route-metric:                      -1
ipv6.route-table:                       0 (unspec)
ipv6.routing-rules:                     --
ipv6.replace-local-rule:                -1 (default)
ipv6.dhcp-send-release:                 -1 (default)
ipv6.routed-dns:                        -1 (default)
ipv6.ignore-auto-routes:                non
ipv6.ignore-auto-dns:                   non
ipv6.never-default:                     non
ipv6.may-fail:                          oui
ipv6.required-timeout:                  -1 (default)
ipv6.ip6-privacy:                       -1 (default)
ipv6.temp-valid-lifetime:               0 (default)
ipv6.temp-preferred-lifetime:           0 (default)
ipv6.addr-gen-mode:                     default
ipv6.ra-timeout:                        0 (default)
ipv6.mtu:                               auto
ipv6.dhcp-pd-hint:                      --
ipv6.dhcp-duid:                         --
ipv6.dhcp-iaid:                         --
ipv6.dhcp-timeout:                      0 (default)
ipv6.dhcp-send-hostname-deprecated:     oui
ipv6.dhcp-send-hostname:                -1 (default)
ipv6.dhcp-hostname:                     --
ipv6.dhcp-hostname-flags:               0x0 (none)
ipv6.auto-route-ext-gw:                 -1 (default)
ipv6.token:                             --
gsm.auto-config:                        non
gsm.number:                             --
gsm.username:                           orange
gsm.password:                           <hidden>
gsm.password-flags:                     0 (aucun)
gsm.apn:                                "orange"
gsm.network-id:                         --
gsm.pin:                                <hidden>
gsm.pin-flags:                          0 (aucun)
gsm.home-only:                          non
gsm.device-id:                          --
gsm.sim-id:                             89330123255811463220
gsm.sim-operator-id:                    --
gsm.mtu:                                auto
gsm.initial-eps-bearer-configure:       oui
gsm.initial-eps-bearer-apn:             orange
gsm.initial-eps-bearer-username:        orange
gsm.initial-eps-bearer-password:        <hidden>
gsm.initial-eps-bearer-password-flags:  0 (aucun)
gsm.initial-eps-bearer-noauth:          non
gsm.initial-eps-bearer-refuse-eap:      oui
gsm.initial-eps-bearer-refuse-pap:      non
gsm.initial-eps-bearer-refuse-chap:     oui
gsm.initial-eps-bearer-refuse-mschap:   oui
gsm.initial-eps-bearer-refuse-mschapv2: oui
proxy.method:                           none
proxy.browser-only:                     non
proxy.pac-url:                          --
proxy.pac-script:                       --

Edit 1: log updated.

I'm new to Linux, and I've installed Ubuntu 26.04 on an old laptop.

I've installed Tor browser and have tried to download a file, but as soon as the save or run box appears and I click OK, the browser window closes. From what I've read so far, it seems to be due to the way I installed it. Is there a way to tell Ubuntu to allow Tor to download files? If anyone can answer this, I need specific instructions on how to do this.

When I try to save the files, I get the pop-up window asking if I want to either open it or save it. The Save button is already selected and when I click OK, Tor just closes. I tried it with the built-in Firefox web browser that came with Ubuntu and it seems to work fine.

I try to update from Ubuntu 24.04.4 LTS to Ubuntu 26.4 LTS, but it won't work. It gives the error

luuk@luuk-750XGK:\~/ventoy-1.0.99$ sudo us
root@luuk-750XGK:/home/luuk/ventoy-1.0.99# cd
root@luuk-750XGK:\~# sudo do-release-upgrade
Er wordt gecontroleerd of er een nieuwe Ubuntu-uitgave is
Er is geen ontwikkelversie van een LTS beschikbaar.
Om op te waarderen naar de nieuwste niet-LTS-ontwikkelingsversie 
geef Prompt=normal in /etc/update-manager/release-upgrades op.
root@luuk-750XGK:\~# 

( for the english people ):

luuk@luuk-750XGK:\~/ventoy-1.0.99$ sudo su
root@luuk-750XGK:/home/luuk/ventoy-1.0.99# cd
root@luuk-750XGK:\~# sudo do-release-upgrade
Checking for a new Ubuntu release
No development version of an LTS is available.
To upgrade to the latest non-LTS development version
enter Prompt=normal in /etc/update-manager/release-upgrades.
root@luuk-750XGK:\~#

I use a custom keyboard configuration that fixes a couple broken keys on my keyboard and also lets me use some of the more esoteric modifiers in Emacs. The configuration works perfectly fine in every other context, but I just discovered that for some reason GIMP is probing the configuration when it starts and this is somehow causing it to crash with the following output:

$ gimp
xkbcommon: ERROR: /home/max/.config/xkb/rules/evdev:15:11: unexpected token
xkbcommon: ERROR: No components returned from XKB rules "/home/max/.config/xkb/rules/evdev"
xkbcommon: ERROR: Couldn't look up rules 'evdev', model 'pc105', layout 'us', variant '', options ''
Segmentation fault (core dumped)

For reference, I am running Ubuntu 24.04 and the "command" gimp above is just an alias for the absolute path to the GIMP 3.0.6 AppImage file (i.e. GIMP-3.0.6-x86_64.AppImage)

For further reference, these are the contents of the evdev file it's complaining about:

$ cat .config/xkb/rules/evdev
! option               =    symbols
  mysymbols:caps_hyper =    +mysymbols(caps_hyper)
  mysymbols:ralt_meta  =    +mysymbols(ralt_meta)
  mysymbols:kp_nums    =    +mysymbols(kp_nums)

! option               =    compat
  mycompat:ralt_meta   =    +mycompat(ralt_meta)

! option               =    types
  mytypes:lvl3_shift   =    +mytypes(lvl3_shift)
//  mytypes:mod5_shift   =    +mytypes(mod5_shift)


// Include the system 'evdev' file
! include %S/evdev

It may be worth noting that the "unexpected token" it complains about is presumably in row 15, column 11, which is the % character on the final line. I also tried editing this to be the explicit full path to the system evdev file but I got the same error.

I am using Ubuntu 26.04 lts and whatever gazebo I install shows an error message. Nothing is supported on this new version or is there some version?

After installing Xubuntu on my computer I am unable to connect to wired networks (wifi works without problems). The computer detects that an ethernet cable is connected, however when select the network, it disconnects immediately. (Update: It seems that it tries to connect to the internet repeatedly, however it stays connected only for a moment each time. It is not possible to load any webpage even in the moments when it is connected). I've tried several ethernet cables that worked either with my computer before os reinstallation (with Kubuntu) or with other computers.
Any help would be much appreciated.

Output of journal-ctl and nmcli monitor:

$ journalctl --since "2026-05-26 15:12:20" -eu NetworkManager.service
May 26 15:13:34 armadillidium NetworkManager[1533]: <info>  [1779801214.4202] device (enp1s0): state change: prepare -> config (reason 'none', managed-type: 'full')
May 26 15:13:34 armadillidium NetworkManager[1533]: <info>  [1779801214.4207] device (enp1s0): state change: config -> ip-config (reason 'none', managed-type: 'full')
May 26 15:13:34 armadillidium NetworkManager[1533]: <info>  [1779801214.5921] device (enp1s0): state change: ip-config -> ip-check (reason 'none', managed-type: 'full')
May 26 15:13:34 armadillidium NetworkManager[1533]: <info>  [1779801214.5968] device (enp1s0): state change: ip-check -> secondaries (reason 'none', managed-type: 'full')
May 26 15:13:34 armadillidium NetworkManager[1533]: <info>  [1779801214.5972] device (enp1s0): state change: secondaries -> activated (reason 'none', managed-type: 'full')
May 26 15:13:34 armadillidium NetworkManager[1533]: <info>  [1779801214.5981] manager: NetworkManager state is now CONNECTED_LOCAL
May 26 15:13:34 armadillidium NetworkManager[1533]: <info>  [1779801214.5988] device (enp1s0): Activation: successful, device activated.
May 26 15:13:36 armadillidium NetworkManager[1533]: <info>  [1779801216.2985] device (enp1s0): state change: activated -> deactivating (reason 'new-activation', managed-type: 'fu>
May 26 15:13:36 armadillidium NetworkManager[1533]: <info>  [1779801216.2990] manager: NetworkManager state is now DISCONNECTING
May 26 15:13:36 armadillidium NetworkManager[1533]: <info>  [1779801216.3028] device (enp1s0): disconnecting for new activation request.
May 26 15:13:36 armadillidium NetworkManager[1533]: <info>  [1779801216.3037] audit: op="connection-activate" uuid="cac41fbe-bc18-3d87-bba7-af2af7f8ffab" name="netplan-enp1s0" pi>
May 26 15:13:36 armadillidium NetworkManager[1533]: <info>  [1779801216.3323] device (enp1s0): state change: deactivating -> disconnected (reason 'new-activation', managed-type: >
May 26 15:13:36 armadillidium NetworkManager[1533]: <info>  [1779801216.3458] manager: NetworkManager state is now DISCONNECTED
May 26 15:13:36 armadillidium NetworkManager[1533]: <info>  [1779801216.3459] device (enp1s0): Activation: starting connection 'netplan-enp1s0' (cac41fbe-bc18-3d87-bba7-af2af7f8f>
May 26 15:13:36 armadillidium NetworkManager[1533]: <info>  [1779801216.3476] device (enp1s0): state change: disconnected -> prepare (reason 'none', managed-type: 'full')
May 26 15:13:36 armadillidium NetworkManager[1533]: <info>  [1779801216.3479] manager: NetworkManager state is now CONNECTING
May 26 15:13:36 armadillidium NetworkManager[1533]: <info>  [1779801216.3480] device (enp1s0): state change: prepare -> config (reason 'none', managed-type: 'full')
May 26 15:13:36 armadillidium NetworkManager[1533]: <info>  [1779801216.3486] device (enp1s0): state change: config -> ip-config (reason 'none', managed-type: 'full')
May 26 15:13:36 armadillidium NetworkManager[1533]: <info>  [1779801216.4910] device (enp1s0): state change: ip-config -> ip-check (reason 'none', managed-type: 'full')
May 26 15:13:36 armadillidium NetworkManager[1533]: <info>  [1779801216.4954] device (enp1s0): state change: ip-check -> secondaries (reason 'none', managed-type: 'full')
May 26 15:13:36 armadillidium NetworkManager[1533]: <info>  [1779801216.4959] device (enp1s0): state change: secondaries -> activated (reason 'none', managed-type: 'full')
May 26 15:13:36 armadillidium NetworkManager[1533]: <info>  [1779801216.4969] manager: NetworkManager state is now CONNECTED_LOCAL
May 26 15:13:36 armadillidium NetworkManager[1533]: <info>  [1779801216.4976] device (enp1s0): Activation: successful, device activated.

$ nmcli monitor
NetworkManager is running
lo: unavailable
enp1s0: unavailable
wlp2s0: unavailable
p2p-dev-wlp2s0: unavailable
Networkmanager is now in the 'disconnected' state
lo: disconnected
lo: connecting (prepare)
lo: connecting (configuring)
lo: connecting (getting IP configuration)
lo: connecting (checking IP connectivity)
lo: using connection 'lo'
lo: connection profile created
lo: connecting (externally)
lo: connected (externally)
enp1s0: disconnected
enp1s0: using connection 'netplan-enp1s0'
enp1s0: connecting (prepare)
Networkmanager is now in the 'connecting' state
enp1s0: connecting (configuring)
enp1s0: connecting (getting IP configuration)
enp1s0: connecting (checking IP connectivity)
enp1s0: connecting (starting secondary connections)
enp1s0: connected
Networkmanager is now in the 'connected (local only)' state
Connectivity is now 'limited'

Output of other nmcli commands showing switching between connected and disconnected state:

$ nmcli general
STATE                   CONNECTIVITY  WIFI-HW  WIFI      WWAN-HW  WWAN     METERED 
connected (local only)  limited       enabled  disabled  missing  enabled  unknown 
$ nmcli networking connectivity 
limited
$ nmcli general
STATE         CONNECTIVITY  WIFI-HW  WIFI      WWAN-HW  WWAN     METERED 
disconnected  none          enabled  disabled  missing  enabled  unknown 
$ nmcli networking connectivity 
none

Netplan configuration files:

total 40
drwxr-xr-x   2 root root  4096 May 26 11:13 .
drwxr-xr-x 157 root root 12288 May 24 19:40 ..
-rw-------   1 root root   185 May 23 20:39 00-installer-config.yaml
-rw-------   1 root root   104 Apr 23 03:18 01-network-manager-all.yaml
-rw-------   1 root root   714 May 23 20:04 90-NM-a2459b54-6a73-4f84-8e8e-80df6bf5e905.yaml
-rw-------   1 root root   804 May 24 10:30 90-NM-c253d5d5-300e-49e7-970e-5575d1ed9840.yaml
-rw-------   1 root root   691 May 25 12:15 90-NM-c651a76f-6131-4409-bda8-29bf854c2434.yaml
-rw-------   1 root root   436 May 25 16:05 90-NM-cac41fbe-bc18-3d87-bba7-af2af7f8ffab.yaml
$ sudo cat /etc/netplan/*yaml               
# This is the network config written by 'subiquity'
network:
  ethernets:
    enp1s0:
      match:
        macaddress: 9c:5a:44:76:d9:07
      set-name: enp1s0
  version: 2
  wifis: {}
# Let NetworkManager manage all devices on this system
network:
  version: 2
  renderer: NetworkManager
network:
  version: 2
  wifis:
    NM-a2459b54-6a73-4f84-8e8e-80df6bf5e905:
      renderer: NetworkManager
      match:
        name: "wlp2s0"
      dhcp4: true
      dhcp6: true
      access-points:
        "Fluonet_5Ghz":
          auth:
            key-management: "psk"
            password: "xxx"
          networkmanager:
            uuid: "a2459b54-6a73-4f84-8e8e-80df6bf5e905"
            name: "Fluonet_5Ghz"
            passthrough:
              wifi-security.auth-alg: "open"
              ipv6.addr-gen-mode: "default"
              ipv6.ip6-privacy: "-1"
              proxy._: ""
      networkmanager:
        uuid: "a2459b54-6a73-4f84-8e8e-80df6bf5e905"
        name: "Fluonet_5Ghz"
network:
  version: 2
  wifis:
    NM-c253d5d5-300e-49e7-970e-5575d1ed9840:
      renderer: NetworkManager
      match:
        name: "wlp2s0"
      dhcp4: true
      dhcp6: true
      access-points:
        "eduroam":
          auth:
            key-management: "eap"
            method: "ttls"
            identity: "25742336@natur.cuni.cz"
            phase2-auth: "mschapv2"
            password: "xxx"
          networkmanager:
            uuid: "c253d5d5-300e-49e7-970e-5575d1ed9840"
            name: "eduroam"
            passthrough:
              wifi-security.auth-alg: "open"
              ipv6.addr-gen-mode: "default"
              ipv6.ip6-privacy: "-1"
              proxy._: ""
      networkmanager:
        uuid: "c253d5d5-300e-49e7-970e-5575d1ed9840"
        name: "eduroam"
network:
  version: 2
  wifis:
    NM-c651a76f-6131-4409-bda8-29bf854c2434:
      renderer: NetworkManager
      match:
        name: "wlp2s0"
      dhcp4: true
      dhcp6: true
      access-points:
        "Octopus":
          auth:
            key-management: "psk"
            password: "xxx"
          networkmanager:
            uuid: "c651a76f-6131-4409-bda8-29bf854c2434"
            name: "Octopus"
            passthrough:
              wifi-security.auth-alg: "open"
              ipv6.addr-gen-mode: "default"
              ipv6.ip6-privacy: "-1"
              proxy._: ""
      networkmanager:
        uuid: "c651a76f-6131-4409-bda8-29bf854c2434"
        name: "Octopus"
network:
  version: 2
  ethernets:
    enp1s0:
      renderer: NetworkManager
      match: {}
      macaddress: "preserve"
      ipv6-address-generation: "stable-privacy"
      networkmanager:
        uuid: "cac41fbe-bc18-3d87-bba7-af2af7f8ffab"
        name: "netplan-enp1s0"
        passthrough:
          connection.timestamp: "1779717841"
          ipv4.dhcp-send-hostname: "1"
          ipv6.method: "ignore"
          proxy._: ""

I have an HP ZBook 15 G6, with a WWAN module included (Fibocom L850-GL). This WWAN with the SIM card is working under Windows 11 (had to start Windows to test it), but partially working under Ubuntu 26.04. The WWAN module is recognized by Ubuntu, and I can access it in the system parameters. But, I cannot define user data (apn, allowed-auth, user, password). There is an existing profile ("Datapro") that cannot be updated (I can fill in data, but it's not saved when I click on save !). I tried with mmcli, and I can create a bearer, but I don't know how to specify to connect the WWAN using this bearer...

Ideally, do you know how I could replace this "Datapro" profile to include my data ?

Edit 1:

• the wwan is not visible in nm-connection-editor.
• I don't know where the "Datapro" profile is located, and that's exactly the problem...

Edit 2:

st@ZBook-15-G6:~$ sudo mmcli -m 0 --simple-connect="apn=orange.fr"  
successfully connected the modem at bearer /org/freedesktop/ModemManager1/Bearer/0

st@ZBook-15-G6:~$ nmcli connection show    
NAME               UUID                                  TYPE      DEVICE     
lo                 50c4e3f1-a367-470d-9321-a2ea1be74deb  loopback  lo     
Mi 10T             21be3474-59e6-4ba2-81e6-701582a48702  wifi      --     
netplan-enp0s31f6  d4735e4b-9bfa-3052-b1c4-ef3302803c9a  ethernet  -- 

st@ZBook-15-G6:~$ sudo ls -l /etc/netplan /etc/NetworkManager/system-connections/
/etc/NetworkManager/system-connections/:   
total 0

/etc/netplan:  
total 12  
-rw------- 1 root root 191 May 18 15:44 00-installer-config.yaml  
-rw------- 1 root root 104 Apr 23 03:22 01-network-manager-all.yaml  
-rw------- 1 root root 695 May 18 15:37 90-NM-21be3474-59e6-4ba2-81e6-701582a48702.yaml

Edit 3:

in /etc/ModemManager, there are 3 directories, but they are empty.

Edit 4:

According to the Lenovo support, I did:

st@ZBook-15-G6:~$ sudo mmcli -m 0

--> primary port: wwan0at1

Then, I created the profile, according to my provider data:

$ sudo nmcli c add type gsm ifname wwan0at1 con-name Orange\ Internet apn orange

Now, I have a second profile available ("Orange Internet") and this one can be updated. So, this topic is solved. Thanks a lot @Daniel T !!!

Then, I updated the profile with the GUI tool and started the wwan. Unfortunately, without success.

Here is the command line result:

st@ZBook-15-G6:~$ nmcli con up id Orange\ Internet 
Erreur : l'activation de la connexion a échoué : Échec de la sélection de l'APN spécifié
Astuce : utiliser « journalctl -xe NM_CONNECTION=8eb6d626-7bc3-4857-a36e-4d13a8a8f020 + NM_DEVICE=wwan0at1 » pour obtenir plus d'informations.

In the log, I found: "failed to set initial EPS bearer settings....." But this is another problem and I will open another topic.

Thanks again.

I have the standard version of Ubuntu installed (version 24.04), but I tried the Ubuntu Studio ISO and I liked it, so I'd like to install the theme. I don't need the audio and video editing software plus I don't want to reinstall my apps, so how do I install only the theme without installing all the apps that I don't need. There was an icon near the clock that I couldn't get rid of.

I'm having trouble setting up Remote Desktop in Ubuntu 26.04. After starting Remote Desktop on port 3389 and entering my username and password, the remote desktop session launches (I want to keep the same session open at all times). After restarting the computer, I can’t connect to it remotely. I have to log into Remote Desktop locally again and unlock the settings by entering the root password.

Is there a solution so that this also works after a restart?

I have a windows drive mounted using dislocker. I added one of its folders to the search providers in Gnome preferences and checked Files (nautilus). Some files inside that folder can be found using Gnome search, others cannot, and I am unable to spot any difference between those. It looks like Gnome indexes that drive only partially.

I tried the localsearch command. It finds all files very well, but I am not sure this is what nautilus uses internally.

Is this a known issue?

EDIT:

• Does not depend on file type (ex: svg, pdf, docx ... may all be found or not found)
• tracker3 is not installed afaik
• Likely unrelated to that issue because it is not smb

Up through release 24.04, when I look at a list of files on an NFS mount using the ls -l command, I see the permissions then the number of hard links, then owner . . .

On 26.04 When I look at a similar list of files on an NFS mount using the ls -l command, I see a plus (+) sign after the permissions.

I found some discussion of the plus sign at the spot meaning there were additional attributes which could be viewed with the getfacl command. On both 24.04 where there isn't a plus to the right of permissions as well as on 26.04, where I do see the + to the right of the permissions, in both cases getfacl shows no additional information, just

# file:   
# owner:   
# group:   
user::rw-  
group::rw-  
other::r--

So why does 24.04 show -rw-rw-r-- yet 26.04 shows -rw-rw-r--+

Interesting, in 26.04 (as per a comment here) gnuls -l gives the same result as ls -l in 24.04. gnuls is not found in my Xbuntu 24.04 system.

Perhaps this is a change to the ls command as of 26.04?

I have a computer running Ubuntu 24.04 LTS desktop where I have QEMU/KVM running. One of the guest OS is Windows 11. This VM has secure-boot on as required by Windows. The secure boot certificates originally issued in 2011 will expire next month. The new certificates were issued in 2023.

The above page shows a table of expiring certificates:

| **Expiring Certificate**                  | **Expiration date** | **New Certificate**                  | **Storing location** | **Purpose**                                          |
| ----------------------------------------- | ------------------- | ------------------------------------ | -------------------- | ---------------------------------------------------- |
| **Microsoft Corporation KEK CA 2011**     | June 2026           | Microsoft Corporation KEK 2K CA 2023 | Stored in KEK        | Signs updates to DB and DBX.                         |
| **Microsoft Windows Production PCA 2011** | Oct 2026            | Windows UEFI CA 2023                 | Stored in DB         | Used for signing the   Windows boot loader.          |
| **Microsoft UEFI CA 2011\***              | June 2026           | Microsoft UEFI CA 2023               | Stored in DB         | Signs third-party boot loaders and EFI applications. |
| **Microsoft UEFI CA 2011\***              | June 2026           | Microsoft Option ROM UEFI CA 2023    | Stored in DB         | Signs third-party option ROMs                        |

It looks like my VM is not using the new certificates. When I check the secure boot status from within Windows guest, it says:

Secure boot is on, but your device is using an older boot trust configuration that should be updated. There is not yet enough data to classify your device for automatic update.

This page says if I see this message then:

Your device might need additional validation before the update can proceed automatically. Visit aka.ms/getsecureboot for more information.

The link takes me back to the original page linked above.

This made me think Windows update failed to work with QEMU's UEFI firmware called OVMF.

The XML tab of the Overview section of the Virtual Machine Manager shows in part:

    <loader readonly="yes" secure="yes" type="pflash">/usr/share/OVMF/OVMF_CODE_4M.ms.fd</loader>
    <nvram template="/usr/share/OVMF/OVMF_VARS_4M.ms.fd">/var/lib/libvirt/qemu/nvram/win11_VARS.fd</nvram>

The files OVMF_CODE_4M.ms.fd and OVMF_VARS_4M.ms.fd have the modified date of December 10, 2025. The file OVMF_CODE_4M.ms.fd is linked to OVMF_CODE_4M.secboot.fd in the folder /usr/share/OVMF/.

I looked at the OMVF UEFI configuration menu and couldn’t find anything regarding the secure boot certificates or anyway to add new ones.

Here is the Windows 11 System log:

Log Name:      System
Source:        Microsoft-Windows-TPM-WMI
Date:          5/6/2026 2:37:16 PM
Event ID:      1801
Task Category: None
Level:         Error
Keywords:      
User:          SYSTEM
Computer:      Dev1-Win11
Description:
Updated Secure Boot certificates are available on this device but have not yet been applied to the firmware. 
Review the published guidance to complete the update and maintain full protection. 
This device signature information is included here.
DeviceAttributes: 
BaseBoardManufacturer:;
FirmwareManufacturer:Ubuntu distribution of EDK II;
FirmwareVersion:2024.02-2ubuntu0.8;
OEMModelNumber:Ubuntu 24.04 PC (Q35 + ICH9, 2009);OEMModelBaseBoard:;
OEMModelSystemFamily:;OEMManufacturerName:QEMU;OEMModelSKU:;OSArchitecture:amd64;
BucketId: 2a0656131aa2862c533c820200125d8c3c845a85144dde851c754bc22261465a
BucketConfidenceLevel: No Data Observed - Action Required
UpdateType: 
For more information, please see https://go.microsoft.com/fwlink/?linkid=2301018

My searches have led to some solutions for Red Hat, and Proxmox, but nothing specific to Ubuntu.

From the Linux perspective most solutions refer only to updating to the Microsoft UEFI CA 2023 certificate. I have not seen anything on how or if one should update the three other certificates expiring in 2026 when running Windows in a VM.

Q: How do I make sure that the OMVF is using all the secure boot certificates from 2023 so that Windows 11 works as expected beyond June 2023?

Thanks

I installed Ubuntu 25.10 on a Dell 16 Pro Plus PB16250 Laptop and noticed the speakers builtin to the laptop don't work (Linux Mint 22.2 USB Live Mode, speakers do work). Not sure what info I need to add to this. I am new to Linux.

00:1f.3 Audio device: Intel Corporation Lunar Lake-M HD Audio Controller (rev 10) (prog-if 80)
    Subsystem: Dell Device 0cdd
    Flags: bus master, fast devsel, latency 64, IRQ 191, IOMMU group 20
    Memory at 3015200000 (64-bit, non-prefetchable) [size=512K]
    Memory at 3015000000 (64-bit, non-prefetchable) [size=2M]
    Capabilities: [50] Power Management version 3
    Capabilities: [c0] Vendor Specific Information: Intel <unknown>
    Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
    Kernel driver in use: sof-audio-pci-intel-lnl
    Kernel modules: snd_sof_pci_intel_lnl, snd_hda_intel

00:1f.3 Audio device [0403]: Intel Corporation Lunar Lake-M HD Audio Controller [8086:a828] (rev 10)
    Subsystem: Dell Device [1028:0cdd]
    Kernel driver in use: sof-audio-pci-intel-lnl

Speaker doesn't show up as an option at all in sound section. The system does recognize the 2 speakers in the 2 monitors that are connected by HDMI but no sound plays from them either.

Sound does come out of my USB headset (Jabra). I have disconnected it to make sure the USB headset wasn't the issue.

**** List of PLAYBACK Hardware Devices ****
card 0: sofsoundwire [sof-soundwire], device 0: Jack Out (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: sofsoundwire [sof-soundwire], device 2: Speaker (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: sofsoundwire [sof-soundwire], device 5: HDMI1 (*) []
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 0: sofsoundwire [sof-soundwire], device 6: HDMI2 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: sofsoundwire [sof-soundwire], device 7: HDMI3 (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: sofsoundwire [sof-soundwire], device 31: Deepbuffer Jack Out (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0

I have Anbox in my system but not able to get a google play app into it to play. When I click on Anbox to open it just says Starting... then closes after a while. Here is what I have in my system.

root@terry-ThinkPad-T530:/home/terry# snap info anbox
name:      anbox
summary:   Android in a Box
publisher: Simon Fels (morphis)
store-url: https://snapcraft.io/anbox
contact:   https://anbox.io
license:   unset
description: |
  Runtime for Android applications which runs a full Android system
  in a container using Linux namespaces (user, ipc, net, mount) to
  separate the Android system fully from the host.
  
  You can find further details in our documentation at
  https://github.com/anbox/anbox/blob/master/README.md
commands:
  - anbox
  - anbox.android-settings
  - anbox.appmgr
  - anbox.collect-bug-info
  - anbox.shell
services:
  anbox.container-manager: simple, enabled, active
snap-id:      Nr9K6UJaIOD8wHpDEQl16nabFFt9LLEQ
tracking:     latest/beta
refresh-date: today at 12:04 CST
channels:
  latest/stable:    –                                    
  latest/candidate: –                                    
  latest/beta:      4-56c25f1     2020-01-02 (186) 391MB devmode
  latest/edge:      4+gitr6c10125 2020-11-30 (206) 410MB devmode
installed:          4-56c25f1                (186) 391MB devmode
root@terry-ThinkPad-T530:/home/terry# wget https://raw.githubusercontent.com/geeks-r-us/anbox-playstore-installer/master/install-playstore.sh

I recently installed Ubuntu 20.04. Considering the time that passed since its release I thought it would be stable. After installing it, I go to Snap Store (named Ubuntu Software) and I see that several new programs appear, but after a few moments, only the editor picks show, nothing else.

I try to install PyCharm through the command line with snap, sudo snap install pycharm-community --classic but it gives me this error: x509: certificate signed by unknown authority.

Afterwards, I decide to purge snap store and reinstall it, and after running these 2 commands: sudo apt-get update,sudo apt install snapd, I enter this one sudo snap install snap-store and gives me again, the same error with the certificates.

I got no idea whats going on. I installed it from 0

Edit 1:
Output of snap list:

No snaps are installed yet. Try 'snap install hello-world'.

Output of sudo snap install snap-store:

error: cannot install "snap-store": Post
       https://api.snapcraft.io/v2/snaps/refresh: x509: certificate signed by
       unknown authority

WIRELESS USB DONGLE - BLUETOOTH USB DONGLE - MINI 5.0 - VERSION 5.48 - 0a12:0001

So lately I bought a Bluetooth USB dongle - model no: MLT-5.0-MiNi

I'm using Ubuntu 20.04.1 LTS.

1. After I connected the adapter into USB port, I checked the port typing in terminal lsusb and I got the following:

Bus 002 Device 003: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)

2. hciconfig -a gave the following:

hci0:   Type: Primary  Bus: USB
        BD Address: 00:1A:7D:DA:71:11  ACL MTU: 679:9  SCO MTU: 48:16
        DOWN
        RX bytes:574 acl:0 sco:0 events:30 errors:0
        TX bytes:368 acl:0 sco:0 commands:30 errors:0
        Features: 0xff 0xff 0x87 0xfa 0xdb 0xbf 0x7b 0x83
        Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 
        Link policy: RSWITCH HOLD SNIFF PARK 
        Link mode: SLAVE ACCEPT

3. hcitool dev:

Devices:

So it seemed that my PC didn't have the driver installed.

4. bluetoothctl --version:

bluetoothctl: 5.53

5. rfkill:

ID TYPE      DEVICE      SOFT      HARD
0  bluetooth hci0   unblocked unblocked

6. And finally btmon:

Bluetooth monitor ver 5.53
Failed to bind channel: Operation not permitted

I found this YouTube video to solve the problem.

1. First of all, I had to install the app "Ubuntu Mainline Kernel Installer" to update until the lastest kernel version, so I typed:

sudo add-apt-repository ppa:cappelikan/ppa
sudo apt-get update
sudo apt-get install mainline

2. Then, before updating to the last kernel version, I had to check what the running kernel version is:

User@PC:~$ uname -r

5.4.0-48-generic

User@PC:~$ uname -sr

Linux 5.4.0-48-generic

3. Later I went to the website of KERNEL and checked what the last Kernel version that's stable is, for example: 5.8.13

After all, I opened the app Ubuntu Mainline Kernel Installer and clicked the last kernel version that is stable, for example: 5.8.13. Finally clicked the button Install.

4. After the installation and reboot, I checked again:

User@PC:~$ uname -r

5.8.13-050813-generic

User@PC:~$ uname -sr

Linux 5.8.13-050813-generic

I saw that it was successful, and the bluetooth USB DONGLE 5.0 is working.

BUT THERE IS ONE PROBLEM TO CONNECT AFTER PAIRING: After pairing Ubuntu with my speaker 5.0, it cannot connect, then after pairing Ubuntu with my smartphone LG, I couldn't send any pictures to smartphone from Ubuntu nor vice versa.

1. I typed systemctl status bluetooth and entered.

● bluetooth.service - Bluetooth service
     Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled)
     Active: active (running) since Sat 2020-10-03 19:02:12 -05; 10min ago
       Docs: man:bluetoothd(8)
   Main PID: 2173 (bluetoothd)
     Status: "Running"
      Tasks: 1 (limit: 4649)
     Memory: 2.2M
     CGroup: /system.slice/bluetooth.service
             └─2173 /usr/lib/bluetooth/bluetoothd

oct 03 19:02:11 PC systemd[1]: Starting Bluetooth service...
oct 03 19:02:12 PC bluetoothd[2173]: Bluetooth daemon 5.53
oct 03 19:02:12 PC systemd[1]: Started Bluetooth service.
oct 03 19:02:12 PC bluetoothd[2173]: Starting SDP server
oct 03 19:02:12 PC bluetoothd[2173]: Bluetooth management interface 1.17 initialized
oct 03 19:02:13 PC bluetoothd[2173]: Failed to set mode: Blocked through rfkill (0x12)
oct 03 19:02:14 PC bluetoothd[2173]: Endpoint registered: sender=:1.75 path=/MediaEndpoint/A2DPSink/sbc
oct 03 19:02:14 PC bluetoothd[2173]: Endpoint registered: sender=:1.75 path=/MediaEndpoint/A2DPSource/sbc
oct 03 19:02:14 PC bluetoothd[2173]: Failed to set mode: Blocked through rfkill (0x12)

I see that there is a problem:

bluetoothd[2173]: Failed to set mode: Blocked through rfkill (0x12)

2. rfkill list:

1: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

3. hciconfig -a:

hci0:   Type: Primary  Bus: USB
    BD Address: 00:1A:7D:DA:71:11  ACL MTU: 679:9  SCO MTU: 48:16
    UP RUNNING PSCAN ISCAN 
    RX bytes:1174 acl:0 sco:0 events:65 errors:0
    TX bytes:1046 acl:0 sco:0 commands:65 errors:0
    Features: 0xff 0xff 0x87 0xfa 0xdb 0xbf 0x7b 0x83
    Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 
    Link policy: RSWITCH HOLD SNIFF PARK 
    Link mode: SLAVE ACCEPT 
    Name: 'Daniel-MS-7529'
    Class: 0x1c0104
    Service Classes: Rendering, Capturing, Object Transfer
    Device Class: Computer, Desktop workstation
    HCI Version: 5.0 (0x9)  Revision: 0x810
    LMP Version: 5.0 (0x9)  Subversion: 0x2312
    Manufacturer: Cambridge Silicon Radio (10)

I see that everything is OK.

4. btmon:

Bluetooth monitor ver 5.53
Failed to bind channel: Operation not permitted

5. sudo dmesg | grep -i bluetooth:

[  132.146271] Bluetooth: Core ver 2.22
[  132.146302] Bluetooth: HCI device and connection manager initialized
[  132.146308] Bluetooth: HCI socket layer initialized
[  132.146310] Bluetooth: L2CAP socket layer initialized
[  132.146314] Bluetooth: SCO socket layer initialized
[  132.515401] Bluetooth: hci0: CSR: Unbranded CSR clone detected; adding workarounds...
[  133.859424] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[  133.859426] Bluetooth: BNEP filters: protocol multicast
[  133.859431] Bluetooth: BNEP socket layer initialized
[  135.263551] Bluetooth: RFCOMM TTY layer initialized
[  135.263561] Bluetooth: RFCOMM socket layer initialized
[  135.263570] Bluetooth: RFCOMM ver 1.11
[ 1017.955624] Bluetooth: hci0: inquiry failed: status 0x0c
[ 1023.331631] Bluetooth: hci0: inquiry failed: status 0x0c
[ 3305.392256] Bluetooth: hci0: CSR: Unbranded CSR clone detected; adding workarounds...

There is one more problem:

Bluetooth: hci0: inquiry failed: status 0x0c

6. Another time, I typed on the terminal hcidump -X and entered and then I went to the setting of Bluetooth to try to pair and connect the speaker and I got the following results on the terminal:

HCI sniffer - Bluetooth packet analyzer ver 5.53
device: hci0 snap_len: 1500 filter: 0xffffffffffffffff

[several lines related to HCI Event]

> HCI Event: Command Status (0x0f) plen 4
    Inquiry (0x01|0x0001) status 0x00 ncmd 1
> HCI Event: Extended Inquiry Result (0x2f) plen 255
    bdaddr 88:D0:39:7C:24:61 mode 1 clkoffset 0x2744 class 0x240404 rssi -25
    Complete local name: 'Soundcore Flare+'
    Unknown type 0xff with 9 bytes data
> HCI Event: Extended Inquiry Result (0x2f) plen 255
    bdaddr 24:FC:E5:6E:53:5B mode 1 clkoffset 0x18bd class 0x08043c rssi -71
> HCI Event: Extended Inquiry Result (0x2f) plen 255
    bdaddr 24:FC:E5:6E:53:5B mode 1 clkoffset 0x18bd class 0x08043c rssi -98
> HCI Event: Inquiry Complete (0x01) plen 1
    status 0x00
> HCI Event: Command Complete (0x0e) plen 4
    LE Set Random Address (0x08|0x0005) ncmd 1
    status 0x00
> HCI Event: Command Complete (0x0e) plen 4
    LE Set Scan Parameters (0x08|0x000b) ncmd 1
    status 0x00
> HCI Event: Command Complete (0x0e) plen 4
    LE Set Scan Enable (0x08|0x000c) ncmd 1
    status 0x00
> HCI Event: Command Status (0x0f) plen 4
    Disconnect (0x01|0x0006) status 0x00 ncmd 1
> HCI Event: Command Complete (0x0e) plen 4
    LE Set Scan Enable (0x08|0x000c) ncmd 1
    status 0x00
> HCI Event: Command Status (0x0f) plen 4
    Inquiry (0x01|0x0001) status 0x00 ncmd 1
> HCI Event: Disconn Complete (0x05) plen 4
    status 0x00 handle 128 reason 0x16
    Reason: Connection Terminated by Local Host
> HCI Event: Extended Inquiry Result (0x2f) plen 255
    bdaddr 88:D0:39:7C:24:61 mode 1 clkoffset 0x2745 class 0x240404 rssi -25
    Complete local name: 'Soundcore Flare+'
    Unknown type 0xff with 9 bytes data
> HCI Event: Inquiry Complete (0x01) plen 1
    status 0x00
> HCI Event: Command Complete (0x0e) plen 4
    LE Set Random Address (0x08|0x0005) ncmd 1
    status 0x00
> HCI Event: Command Complete (0x0e) plen 4
    LE Set Scan Parameters (0x08|0x000b) ncmd 1
    status 0x00
> HCI Event: Command Complete (0x0e) plen 4
    LE Set Scan Enable (0x08|0x000c) ncmd 1
    status 0x00
> HCI Event: Command Complete (0x0e) plen 4
    LE Set Scan Enable (0x08|0x000c) ncmd 1
    status 0x00
> HCI Event: Command Status (0x0f) plen 4
    Inquiry (0x01|0x0001) status 0x00 ncmd 1
> HCI Event: Extended Inquiry Result (0x2f) plen 255
    bdaddr 88:D0:39:7C:24:61 mode 1 clkoffset 0x2745 class 0x240404 rssi -27
    Complete local name: 'Soundcore Flare+'
    Unknown type 0xff with 9 bytes data
> HCI Event: Extended Inquiry Result (0x2f) plen 255
    bdaddr 88:D0:39:7C:24:61 mode 1 clkoffset 0x2745 class 0x240404 rssi -27
    Complete local name: 'Soundcore Flare+'
    Unknown type 0xff with 9 bytes data
> HCI Event: Extended Inquiry Result (0x2f) plen 255
    bdaddr 88:D0:39:7C:24:61 mode 1 clkoffset 0x2745 class 0x240404 rssi -24
    Complete local name: 'Soundcore Flare+'
    Unknown type 0xff with 9 bytes data
> HCI Event: Extended Inquiry Result (0x2f) plen 255
    bdaddr 88:D0:39:7C:24:61 mode 1 clkoffset 0x2745 class 0x240404 rssi -24
    Complete local name: 'Soundcore Flare+'
    Unknown type 0xff with 9 bytes data
> HCI Event: Extended Inquiry Result (0x2f) plen 255
    bdaddr 88:D0:39:7C:24:61 mode 1 clkoffset 0x2745 class 0x240404 rssi -23
    Complete local name: 'Soundcore Flare+'
    Unknown type 0xff with 9 bytes data
> HCI Event: Extended Inquiry Result (0x2f) plen 255
    bdaddr 88:D0:39:7C:24:61 mode 1 clkoffset 0x2745 class 0x240404 rssi -24
    Complete local name: 'Soundcore Flare+'
    Unknown type 0xff with 9 bytes data
> HCI Event: Extended Inquiry Result (0x2f) plen 255
    bdaddr 88:D0:39:7C:24:61 mode 1 clkoffset 0x2745 class 0x240404 rssi -23
    Complete local name: 'Soundcore Flare+'
    Unknown type 0xff with 9 bytes data
> HCI Event: Extended Inquiry Result (0x2f) plen 255
    bdaddr 88:D0:39:7C:24:61 mode 1 clkoffset 0x2745 class 0x240404 rssi -22
    Complete local name: 'Soundcore Flare+'
    Unknown type 0xff with 9 bytes data

Soundcore Flare+ is the speaker's model. I see there is one another problem:

Unknown type 0xff with 9 bytes data

The Bluetooth USB 5.0 works fine on Windows 10 but on Ubuntu 20.04, it doesn't work. So Ubuntu needs drivers for Bluetooth 5.0.

On 5.8.14 Kernel, Ubuntu really displays devices to pair and connect, but the pairing and connecting don't work.

So, could anyone help me to solve this problem of pairing and connecting with devices from Ubuntu?

I found the problem solved for Linux in this website but I don't know how to compile and patch on Ubuntu 20.04, it can work only for Kernel's version 5.8.

The other day I decided I might try to make some music on Ubuntu 18.04. I have a synthesizer that can work on its own, but it can also send an receive MIDI, namely a Novation MiniNova.
So I downloaded LMMS from the Software Store, created a tune in it without the use of the keyboard. Up until this point, no problems.

Now, when I plugged in my MiniNova, I expected to just run a few commands and be done with it. How wrong could I be. LMMS didn't recognize my keyboard, neither did KMidiMon. I followed this guide by a bloke named Ted and followed every step closely up until the point where I had to run cat /proc/asound/cards to figure out what ALSA named my sound card. I used sox to generate a 440 Hz sine .wav file, then I typed aplay -D hw:1 test.wav and I heard the sine wave through my laptops speakers.
lsusb gave me the MiniNova in the list, but adding the verbose option told me that it Couldn't open the device, some information missing.which seems weird to me.

I did come across a weird little thing when I decided that it couldn't hurt to run LMMS through a terminal. When I did, I got the following result:

ALSA lib rawmidi_hw.c:233:(snd_rawmidi_hw_open) open /dev/snd/midiC0D0 failed: No such file or directory
cannot open MIDI-device: No such file or directory
Couldn't create MIDI-client, neither with ALSA nor with OSS. Will use dummy-MIDI-client.
Connection established.

Stream successfully created

MidiClientRaw: unhandled MIDI-event 176

MidiClientRaw: unhandled MIDI-event 176

MidiClientRaw: unhandled MIDI-event 176

The last three messages were after opening the project I had been working on.

If it's helpful, here are links to my results after typing:

• aplay -l
• cat /proc/asound/cards

Thanks in advance, WalrusGumboot

I am kind of new to Linux.
I just built a desktop using ASUS Prime Z370-A motherboard with 256GB NVME hard drive, and installed windows 10 Pro (Demo version, as I have not entered the key for it). I allocated 30GB for linux, and installed Ubuntu 18.04 LTS on it (with No swap space since I have 16 GB DDR).

While installing Ubuntu, I opted for 'Something else' and selected the 30GB free space as my root, and formatted it ext4. Left the 'Device for booth loader installation' option as is.

My issue is, every time I have to boot into Ubuntu, I have to go to UEFI BIOS 'boot Priority'. I was hoping to see a grub loader giving me an option to select windows or Ubuntu.

Looks like BIOS - UEFI is getting in the way for me, or Grub is not used here ?
Thanks and regards

So whenever I try to click a button in the menu option in firefox with my mouse it won't respond. I tried to reinstall firefox but it didn't help. The menu button is located on the top right side of firefox.

Is there a list of Ubuntu versions with default corresponding Linux kernel versions somewhere?

I would specifically like to know the most recent version of Ubuntu that still used Linux Kernel 2.x.

I just updated the DNS record (ns1, ns2, ns3.myhostingcompany.com) for a site I've got hosted, but I still get the domain registrar parking page.

I'd like to see if the problem is Ubuntu's cached DNS records. Is there a way to clear Ubuntu's DNS cache? (if such a thing exists?)