I'm on Kubuntu 26.04. I can connect to a VPN with a command line like this:

sudo openconnect --protocol=nc --useragent "Pulse-Secure/22.8.4.38767" <gateway_address>

I created a VPN connection on the GUI matching these settings, and I get that the connection "failed to activate". I then try with nmcli:

nmcli connection up my_VPN_name

I get a GUI to enter the password, then the connection fails. The terminal says "Connection activation failed: Unknown reason" and gives a suggested journalctl line. Running this line I find "dbus: failure: connect-failed (1)".

However, with:

nmcli connection up my_VPN_name --ask

I'm asked username and password on the terminal. I enter them. The connection is activated sucessfully.

So, somehow the GUI username/password is not being correctly handled. Any ideas?

I believe the password is being passed to the gateway alright. Why? Because sometimes I get a message about "Session limit reached" after entering the password (both with and without --ask), with a choice of which active session to kill. It is after that that the connection fails with GUI or succeeds on terminal.

well I was cleaning up old apps and programs when I deleted a file called colord (I think) something to do with colour management (I was thinking as in managing printer colours, bu I think I was very wrong) and I thought I don't need that. I think? I was looking at flatpaks using "software" or was it a flatpak manager. I don't think it was snap, but could have been. Anyhow as it uninstall my laptop stopped.

I can login to the command line.

I cannot seem to reinstall colord from flatpak and nothing else I've tried restarts gnome. I think most things I've tried refer to x.

Does anyone have any ideas how I can restart the desktop. Pretty please.

I have been using FUSE with Ubuntu for a long time, but with Ubuntu 24.04 I ran into what appears to be a well-known issue. Installing FUSE breaks the Gnome Display Manager (GDM). I would be happy to provide details, but it seems well-documented on the web.

Is there a workaround? Using NFS file server is a possibility, but I would rather stay with FUSE if it can be made to work.

I'm installing Lubuntu 26 on an old Baytrail tablet that uses an eMMC as its main storage. During the live session, the installer cannot detect the eMMC unless I manually load the module:

modprobe mmc_block

I have to do this from an alternate TTY because the installer doesn't see the eMMC otherwise.

After installation, I solved the boot issue by loading the module from the dracut emergency shell:

modprobe mmc_block
Ctrl+D to continue boot

Then I added the driver permanently:

echo 'force_drivers+=" mmc_block "' \> /etc/dracut.conf.d/10-mmc.conf
sudo dracut --force

This works for the installed system.

My question is:
What should I modify in the live USB media so that mmc_block is automatically loaded during the live boot? I need this because using a keyboard on a tablet is very inconvenient.

Any help would be appreciated.

I am really motivated to learn how to manage and configure Linux servers, but as a beginner, the terminal and server administration can feel a bit overwhelming at times. I want to build a solid foundation, so I am looking for any guidance, tips, recommended learning paths, or resources that can help me along the way. Any kind of help, advice, or documentation is highly appreciated!

loading screen I recently upgraded from kubuntu 25.10 to 26.04 lts and I get stuck at this loading screen everytime I power on my laptop , this screen appears after logging in and stays there for about a solid 5 - 6 mins what amni supposed to do? I am able to access the terminal so if you need additional info I might be able to help. Thanks in advance !

I’m experiencing a display scaling issue on my Dell Latitude 5440 laptop. The icons, text, and overall UI appear too small at the default resolution, so I enabled 150% fractional scaling. While that improved readability, it introduced noticeable blurriness in certain applications, the login screen, and some interface elements, which has made the system uncomfortable to use.

I would appreciate guidance on the best way to achieve proper scaling and sharp display quality without causing blur or rendering issues.

After an upgrade from 25.10, I've lost wifi connexion. After some tests and tries, I found it's coming from kernel 7.0.0-15. Reinstalling doesn't solve anything. Rebooting to same install but on kernel 7.0.0-14 solve the issue. I don't get anything special in logs but:

2026-05-17T16:17:36.974307+02:00 FRPA1-0222 kernel: Loading modules backported from iwlwifi
2026-05-17T16:17:36.974307+02:00 FRPA1-0222 kernel: iwlwifi-stack-public:release/core103:14434:6861514a
2026-05-17T16:17:36.974347+02:00 FRPA1-0222 kernel: iwlwifi 0000:93:00.0: enabling device (0000 -> 0002)
2026-05-17T16:17:36.974348+02:00 FRPA1-0222 kernel: iwlwifi 0000:93:00.0: Detected crf-id 0x400410, cnv-id 0x400410 wfpm id 0x80000000
2026-05-17T16:17:36.974348+02:00 FRPA1-0222 kernel: iwlwifi 0000:93:00.0: PCI dev 2725/4020, rev=0x420, rfid=0x10d000
2026-05-17T16:17:36.974349+02:00 FRPA1-0222 kernel: iwlwifi 0000:93:00.0: Detected Intel(R) Wi-Fi 6E AX210 160MHz
2026-05-17T16:17:36.974352+02:00 FRPA1-0222 kernel: iwlwifi 0000:93:00.0: loaded firmware version 89.123cf747.0 ty-a0-gf-a0-89.ucode op_mode iwlmvm
2026-05-17T16:17:36.974357+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol ieee80211_beacon_update_cntdwn
2026-05-17T16:17:36.974357+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol ieee80211_beacon_update_cntdwn (err -22)
2026-05-17T16:17:36.974357+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol ieee80211_stop_tx_ba_session
2026-05-17T16:17:36.974358+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol ieee80211_stop_tx_ba_session (err -22)
2026-05-17T16:17:36.974358+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol ieee80211_gtk_rekey_notify
2026-05-17T16:17:36.974358+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol ieee80211_gtk_rekey_notify (err -22)
2026-05-17T16:17:36.974359+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol regulatory_set_wiphy_regd_sync
2026-05-17T16:17:36.974359+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol regulatory_set_wiphy_regd_sync (err -22)
2026-05-17T16:17:36.974359+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol ieee80211_start_tx_ba_cb_irqsafe
2026-05-17T16:17:36.974360+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol ieee80211_start_tx_ba_cb_irqsafe (err -22)
2026-05-17T16:17:36.974360+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol ieee80211_connection_loss
2026-05-17T16:17:36.974360+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol ieee80211_connection_loss (err -22)
2026-05-17T16:17:36.974361+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol ieee80211_report_wowlan_wakeup
2026-05-17T16:17:36.974361+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol ieee80211_report_wowlan_wakeup (err -22)
2026-05-17T16:17:36.974361+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol ieee80211_iterate_interfaces
2026-05-17T16:17:36.974362+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol ieee80211_iterate_interfaces (err -22)
2026-05-17T16:17:36.974362+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol cfg80211_vendor_cmd_get_sender
2026-05-17T16:17:36.974362+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol cfg80211_vendor_cmd_get_sender (err -22)
2026-05-17T16:17:36.974363+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol ieee80211_sched_scan_stopped
2026-05-17T16:17:36.974363+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol ieee80211_sched_scan_stopped (err -22)
2026-05-17T16:17:36.974363+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol ieee80211_chswitch_done
2026-05-17T16:17:36.974364+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol ieee80211_chswitch_done (err -22)
2026-05-17T16:17:36.974364+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol cfg80211_bss_iter
2026-05-17T16:17:36.974364+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol cfg80211_bss_iter (err -22)
2026-05-17T16:17:36.974365+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol ieee80211_unreserve_tid
2026-05-17T16:17:36.974365+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol ieee80211_unreserve_tid (err -22)

Under 7.0.0-14 kernel I've instead the logs:

026-05-17T16:17:36.974307+02:00 FRPA1-0222 kernel: Loading modules backported from iwlwifi
2026-05-17T16:17:36.974307+02:00 FRPA1-0222 kernel: iwlwifi-stack-public:release/core103:14434:6861514a
2026-05-17T16:17:36.974347+02:00 FRPA1-0222 kernel: iwlwifi 0000:93:00.0: enabling device (0000 -> 0002)
2026-05-17T16:17:36.974348+02:00 FRPA1-0222 kernel: iwlwifi 0000:93:00.0: Detected crf-id 0x400410, cnv-id 0x400410 wfpm id 0x80000000
2026-05-17T16:17:36.974348+02:00 FRPA1-0222 kernel: iwlwifi 0000:93:00.0: PCI dev 2725/4020, rev=0x420, rfid=0x10d000
2026-05-17T16:17:36.974349+02:00 FRPA1-0222 kernel: iwlwifi 0000:93:00.0: Detected Intel(R) Wi-Fi 6E AX210 160MHz
2026-05-17T16:17:36.974352+02:00 FRPA1-0222 kernel: iwlwifi 0000:93:00.0: loaded firmware version 89.123cf747.0 ty-a0-gf-a0-89.ucode op_mode iwlmvm
2026-05-17T16:17:36.974357+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol ieee80211_beacon_update_cntdwn
2026-05-17T16:17:36.974357+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol ieee80211_beacon_update_cntdwn (err -22)
2026-05-17T16:17:36.974357+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol ieee80211_stop_tx_ba_session
2026-05-17T16:17:36.974358+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol ieee80211_stop_tx_ba_session (err -22)
2026-05-17T16:17:36.974358+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol ieee80211_gtk_rekey_notify
2026-05-17T16:17:36.974358+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol ieee80211_gtk_rekey_notify (err -22)
2026-05-17T16:17:36.974359+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol regulatory_set_wiphy_regd_sync
2026-05-17T16:17:36.974359+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol regulatory_set_wiphy_regd_sync (err -22)
2026-05-17T16:17:36.974359+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol ieee80211_start_tx_ba_cb_irqsafe
2026-05-17T16:17:36.974360+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol ieee80211_start_tx_ba_cb_irqsafe (err -22)
2026-05-17T16:17:36.974360+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol ieee80211_connection_loss
2026-05-17T16:17:36.974360+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol ieee80211_connection_loss (err -22)
2026-05-17T16:17:36.974361+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol ieee80211_report_wowlan_wakeup
2026-05-17T16:17:36.974361+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol ieee80211_report_wowlan_wakeup (err -22)
2026-05-17T16:17:36.974361+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol ieee80211_iterate_interfaces
2026-05-17T16:17:36.974362+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol ieee80211_iterate_interfaces (err -22)
2026-05-17T16:17:36.974362+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol cfg80211_vendor_cmd_get_sender
2026-05-17T16:17:36.974362+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol cfg80211_vendor_cmd_get_sender (err -22)
2026-05-17T16:17:36.974363+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol ieee80211_sched_scan_stopped
2026-05-17T16:17:36.974363+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol ieee80211_sched_scan_stopped (err -22)
2026-05-17T16:17:36.974363+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol ieee80211_chswitch_done
2026-05-17T16:17:36.974364+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol ieee80211_chswitch_done (err -22)
2026-05-17T16:17:36.974364+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol cfg80211_bss_iter
2026-05-17T16:17:36.974364+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol cfg80211_bss_iter (err -22)
2026-05-17T16:17:36.974365+02:00 FRPA1-0222 kernel: iwlmvm: disagrees about version of symbol ieee80211_unreserve_tid
2026-05-17T16:17:36.974365+02:00 FRPA1-0222 kernel: iwlmvm: Unknown symbol ieee80211_unreserve_tid (err -22)

As asked in comment, no backport of iwlwifi is installed. Wifi works straight just in booting in 7.0.0-14 kernel.

dkms status:

digimend/13, 7.0.0-15-generic, x86_64: installed
evdi/1.14.15+dfsg, 6.17.0-29-generic, x86_64: installed (Built modules are missing in the kernel modules folder)
evdi/1.14.15+dfsg, 7.0.0-15-generic, x86_64: installed
ipt-netflow/2.6, 6.17.0-29-generic, x86_64: installed (Built modules are missing in the kernel modules folder)
ipt-netflow/2.6, 7.0.0-15-generic, x86_64: installed

apt list --installed | grep "iwl|backport"

linux-main-modules-iwlwifi-7.0.0-15-generic/resolute-updates,now 7.0.0-15.15+1 amd64 [installed, automatic]
linux-modules-iwlwifi-generic/resolute-updates,now 7.0.0-15.15+1 amd64 [installed]

I can exclude issue with other part of the Wifi stack: plugging in an USB wifi card raise the connection quite instantly (driver of my other wifi card is rtl8xxxu, works on both 7.0.0-14 and 7.0.0-15)

I didn't find any questions / comments yet. Do someone encounter the same? What can I report to help?

I just want to play Minecraft in Ubuntu. It's telling me could not find program 'cautious launcher'.

I am a journalist, and I need a translation tool that works in Ubuntu 24.04 completely offline (without an internet connection). What application can you recommend for this purpose?

I have a Galaxy Book 2 Pro 5G. I mentioned the issue with the speakers not producing sound last time, but it was only partially resolved—the sound disappears again after restarting the computer. After seeing this post, I feel there might be some hope, but my technical knowledge is limited, and I don’t understand where to go or what to do. Could someone please be so kind as to provide detailed instructions? Thank you very much!

No sound from speaker on LG gram 2023 (i7-1360P)

enter image description here

The printer is connected using Wi-Fi, but automatic/manual adding driverless IPP printer and printing works only, if I connect the computer to router using Ethernet cable in (X)ubuntu 24.04. Why is that? I could print when computer is connected using Wi-Fi in 20.04, and also by 26.04 at least using a different Ubuntu flavor. How to fix this?

Suddenly one day the wifi option disappeared from my laptop. Since then my laptop is useless

I have the 24.04.4 LTS version of Ubuntu. Please help me

I have bind9 version 9.18.39 on Ubuntu 24.04. The bind is constantly being attacked for denial of service. I was managing it with fail2ban jail for "refused+denied".

To decrease the rate limit, I implemented two views, internal and external, with a tight rate limit of responses-per-second=2 in window=15 (for context see My Views configuration). As soon as I switched to two views, the "security log" stopped writing, but I still can see refused/denied messages in the "default-log".

I do not understand why the security log stopped writing. It was writing when I didn't have any views, and hence the permissions are correct. The default-log does not match the Fail2ban filter, and hence I need to get the security-log to write again.

My Views configuration

// Internal view for local clients (no rate limiting)
view "internal" {
    match-clients { "internal-network"; };
    recursion yes;
    // Include your internal zones and settings here
    // Consider adding the 1918 zones here, if they are not used in your organization
    include "/etc/bind/zones.rfc1918";
    include "/etc/bind/named.conf.default-zones";

    include "/etc/bind/named-master-zones-reverse-zones-internal";
    include "/etc/bind/named-master-zones-forward-zones-internal";
    include "/etc/bind/named-master-zones-forward-zones-certbot-modifiable-zones";
};

// External view for the rest of the world (with rate limiting)
view "external" {
    # Allow anyone to query authoritative zones
    match-clients { any; };
    //allow-query { any; };
    recursion no; // Usually desired for external-facing authoritative servers

    // Apply Response Rate Limiting (RRL) specifically to this view
    rate-limit { responses-per-second 2; // Sets the number of responses allowed per second per unique query/client pair (default: 0, which is disabled; common suggestion: 5-10)
         window 15;             // Time in seconds (1 to 3600) for tracking rates; default is 15
     slip 0;                // : Controls how many dropped responses are sent as truncated (TC=1) packets. Default is 2 (every other query); 0 disables it, 1 sends all dropped packets as truncated.
         log-only no;           // Set to 'no' to actually drop/reject
         errors-per-second 1;   // Limit error responses too
         ipv4-prefix-length 32; // Track per-IPv4 address
     };

    // Consider adding the 1918 zones here, if they are not used in your organization
    include "/etc/bind/zones.rfc1918";
    include "/etc/bind/named.conf.default-zones";

    // Include your public zones here
    include "/etc/bind/named-master-zones-reverse-zones-external";
    include "/etc/bind/named-master-zones-forward-zones-external";

};

My log configuration:

logging {
    channel default_file {
        file "/var/log/named/default.log" versions 3 size 5m;
        severity dynamic;
        print-time yes;
    };
    channel general_file {
        file "/var/log/named/general.log" versions 3 size 5m;
        severity dynamic;
        print-time yes;
    };
    channel database_file {
        file "/var/log/named/database.log" versions 3 size 5m;
        severity dynamic;
        print-time yes;
    };
    channel security_file {
        file "/var/log/named/security.log" versions 3 size 5m;
        severity info;
        print-time yes;
        print-severity yes;
        print-category yes;
    };
    channel config_file {
        file "/var/log/named/config.log" versions 3 size 5m;
        severity dynamic;
        print-time yes;
    };
    channel resolver_file {
        file "/var/log/named/resolver.log" versions 3 size 5m;
        severity dynamic;
        print-time yes;
    };
    channel xfer-in_file {
        file "/var/log/named/xfer-in.log" versions 3 size 5m;
        severity dynamic;
        print-time yes;
    };
    channel xfer-out_file {
        file "/var/log/named/xfer-out.log" versions 3 size 5m;
        severity dynamic;
        print-time yes;
    };
    channel notify_file {
        file "/var/log/named/notify.log" versions 3 size 5m;
        severity dynamic;
        print-time yes;
    };
    channel client_file {
        file "/var/log/named/client.log" versions 3 size 5m;
        severity dynamic;
        print-time yes;
    };
    channel unmatched_file {
        file "/var/log/named/unmatched.log" versions 3 size 5m;
        severity dynamic;
        print-time yes;
    };
    channel queries_file {
        file "/var/log/named/queries.log" versions 3 size 5m;
        severity dynamic;
        print-time yes;
    };
    channel network_file {
        file "/var/log/named/network.log" versions 3 size 5m;
        severity dynamic;
        print-time yes;
    };
    channel update_file {
        file "/var/log/named/update.log" versions 3 size 5m;
        severity dynamic;
        print-time yes;
    };
    channel dispatch_file {
        file "/var/log/named/dispatch.log" versions 3 size 5m;
        severity dynamic;
        print-time yes;
    };
    channel dnssec_file {
        file "/var/log/named/dnssec.log" versions 3 size 5m;
        severity dynamic;
        print-time yes;
    };
    channel lame-servers_file {
        file "/var/log/named/lame-servers.log" versions 3 size 5m;
        severity dynamic;
        print-time yes;
    };

    category default { default_file; };
    category general { general_file; };
    category database { database_file; };
    category security { security_file; };
    category config { config_file; };
    category resolver { resolver_file; };
    category xfer-in { xfer-in_file; };
    category xfer-out { xfer-out_file; };
    category notify { notify_file; };
    category client { client_file; };
    category unmatched { unmatched_file; };
    category queries { queries_file; };
    category network { network_file; };
    category update { update_file; };
    category dispatch { dispatch_file; };
    category dnssec { dnssec_file; };
    category lame-servers { lame-servers_file; };
};

My Options.conf

include "/etc/bind/named-acl.conf";

include "/etc/bind/rndc.key";

controls {
    inet 127.0.0.1 port 953
    allow { 127.0.0.1; } keys { "rndc-key"; };
};

options
{
    //check-names master ignore;
    listen-on port 53 { 127.0.0.1; any; };
    listen-on-v6 port 53 { ::1; };

    directory "/var/cache/bind";

        # Restrict cache access to local trusted clients only
        allow-query-cache { "localhost"; "mydomain-computers"; };

    allow-transfer { "trusted-transfer-servers-mydomain.com"; "trusted-transfer-servers-xname.org"; "trusted-transfer-servers-buddydns.com"; };
    notify  primary-only;


    key-directory "/var/cache/bind";

        # Security best practices from ISC.org
        dnssec-validation auto;
        listen-on-v6 { any; };

};

I’m on Kubuntu 26.04 with KDE Plasma 6 and I’m having issues with color emoji rendering. Some emojis appear monochrome, render just fine

Chrome screenshot1 Example broken plage chatgpt

These are my command history I ran before the issue started:

sudo apt reinstall fonts-noto-color-emoji
sudo apt reinstall fonts-noto fonts-noto-core fonts-noto-ui-core
sudo apt remove fonts-twemoji-svginot

fc-cache -f -v
rm -rf ~/.cache/fontconfig
rm -rf ~/.cache/fonts

nano ~/.config/fontconfig/conf.d/01-emoji.conf
sudo nano /etc/fonts/local.conf
cat /etc/fonts/local.conf

shopt -s dotglob; mkdir -p ~/.fonts/truetype/noto; ln -s /usr/share/fonts/truetype/noto/* ~/.fonts/truetype/noto
rm -rf ~/.fonts/truetype/noto

fc-match emoji

If needed, I can also share the contents of 01-emoji.conf and /etc/fonts/local.conf.

What is the correct way to restore color emoji support on KDE6 / Kubuntu 26.04?

[EDIT] Here the configuartion files

andygl@hp15s:~$ cat ~/.config/fontconfig/conf.d/01-emoji.conf 
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
<fontconfig>
 <alias binding="strong">
  <family>emoji</family>
  <prefer>
   <family>Noto Color Emoji</family>
  </prefer>
 </alias>
 <alias binding="strong">
  <family>sans-serif</family>
  <prefer>
   <family>Noto Color Emoji</family>
  </prefer>
 </alias>
 <match target="font">
  <edit mode="assign" name="rgba">
   <const>rgb</const>
  </edit>
 </match>
 <match target="font">
  <edit mode="assign" name="hinting">
   <bool>true</bool>
  </edit>
 </match>
 <match target="font">
  <edit mode="assign" name="hintstyle">
   <const>hintslight</const>
  </edit>
 </match>
 <match target="font">
  <edit mode="assign" name="antialias">
   <bool>true</bool>
  </edit>
 </match>
</fontconfig>
andygl@hp15s:~$ cat /etc/fonts/local.conf
<?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<fontconfig>
</fontconfig>
andygl@hp15s:~$ 

I use fvwm, with sloppyfocus and autoraise (so that when a window receives focus, it automatically raises above overlapping windows). Since I upgraded to ubuntu 24.04.4, auto raise isn't functioning.

EDIT: I upgraded Lubuntu to the LATEST version (26.04) today with kernel 7.0.0-15-generic. I already had a feeling my problem had nothing to do with the old Lubuntu version I was using. And I can confirm the freezing still exists.

Here are the last two lines I found with journalctl -b -1 --no-pager:

kernel: radeon 0000:00:01.0: ring 0 stalled for more than 10078msec
kernel: radeon 0000:00:01.0: GPU lockup (current fence id 0x0000000000019248 last fence id 0x000000000001924b on ring 0)

As I stated below, it does not happen when I run Firefox in Bodhi 7.0 HWE from a USB stick. So both Firefox and the hardware can be ruled out.

ORIGINAL QUENSTION:

Since a few months Lubuntu (based on Ubuntu 25.04 plucky) freezes when I try to edit on tinkercad.com in Firefox.

I checked the system logging, and I discovered the following errors:

radeon 0000:00:01.0: ring 3 stalled for more than x msec

radeon 0000:00:01.0: GPU lockup

where x > 10000

I have an 12-years old machine with a Radeon HD 8330 GPU. Have the drivers been updated recently? Is that likely for a 12-years old GPU?

I started a previous kernel in Linux (6.14.0-36-generic), but the system kept freezing. So the cause is not a new kernel. Then I started the troubleshoot mode in Firefox and my system kept running. So I turned of hardware acceleration in the settings and restarted Firefox. My machine stayed stable. So I presumed the cause is the hardware acceleration. First I thought of a bug in Firefox, but the developpers at Mozilla didn't have a clue.

On reddit I got the advice to run Bodhi 7.0 HWE. Last week I made some time and tried Bodhi 7.0 HWE from a stick. Tinkercad gave no problem at all in Firefox. I worked with it for over an hour and no freezes. So I can rule out both Firefox AND hardware problems!

That leaves only the grapics driver or other parts of the OS as the cause. Does anyone have an idea where to look from here?

edit: my question is detailed enough to see it's not about how to install Firefox with the deb package, I've already edited it to follow someone's advice and have no idea what I should add.

Environment

• OS: Ubuntu 26.04 LTS (fresh install, last LTS)
• Hardware: AMD-powered laptop [Lenovo IdeaPad-Slim-5-15ARP1]
• Session: Wayland
• Firefox: installed from Mozilla APT repository (removed snap first)
• Thunderbird: installed from Mozilla APT repository (works, but shows warning)

What I did

1. Installed Ubuntu 24.04 LTS on a new laptop
2. Removed the preinstalled Firefox and Thunderbird snaps
3. Followed the official Mozilla instructions to add the Mozilla APT repository and install the .deb builds
4. Thunderbird launches normally
5. Firefox fails to start

Expected behavior

Both Firefox and Thunderbird should start normally from the APT packages, as on previous Ubuntu releases.

Actual behavior

• Firefox: crashes instantly and sometimes shows the Mozilla Crash Reporter instead of a browser window
• Thunderbird: starts, but prints a sandbox warning in terminal

Terminal output

Firefox:

[16570] Sandbox: CanCreateUserNamespace() unshare(CLONE_NEWPID): EPERM
[16567] Wayland Proxy [0x7bc5c6587010] Error: StartProxyServer(): bind() error : Permission non accordée
[Parent 16567, Main Thread] WARNING: Error: GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: An AppArmor policy prevents this sender from sending this message to this recipient; type="method_call", sender=":1.170" (uid=1000 pid=16567 comm="/usr/lib/firefox/firefox" label="firefox (enforce)") interface="org.gtk.vfs.Metadata" member="GetTreeFromDevice" error name="(unset)" requested_reply="0" destination=":1.75" (uid=1000 pid=3497 comm="/usr/libexec/gvfsd-metadata" label="unconfined")
: 'glib warning', file toolkit/xre/nsSigHandlers.cpp:201

Followed by multiple additional warning paragraphs.

Thunderbird:

Sandbox: CanCreateUserNamespace() unshare(CLONE_NEWPID): EPERM

What I've already checked

• Both applications were installed using the exact steps from the official Mozilla website for Ubuntu
• Thunderbird works despite the sandbox warning, Firefox does not
• Errors mention AppArmor (label="firefox (enforce)"), Wayland proxy bind permission, and unshare(CLONE_NEWPID): EPERM

Question

How do I fix the Firefox startup crash on Ubuntu 24.04 after replacing the snap with the Mozilla APT build? Is this caused by the new AppArmor user namespace restrictions, the Wayland sandbox, or a missing permission, and what is the correct way to allow Firefox to create its sandbox without reverting to the snap?

Attempt n°1: create an apparmor profile for the new Firefox installation.

I've looked for an example and copied a profile suggested on Reddit. It did not change the outcome:

sudo systemctl restart apparmor.service
[sudo: authenticate] Mot de passe :    
Warning: The unit file, source configuration file or drop-ins of apparmor.service changed on disk. Run 'systemctl daemon-reload' to reload units.
rei@rei-IdeaPad-Slim-5-15ARP10:~$ systemctl daemon-reload
rei@rei-IdeaPad-Slim-5-15ARP10:~$ firefox
[263254] Sandbox: CanCreateUserNamespace() unshare(CLONE_NEWPID): EPERM
[263251] Wayland Proxy [0x702f53186570] Error: StartProxyServer(): bind() error : Permission non accordée

I installed the latest Ubuntu 26.04 in a virtual machine. The host OS is Windows 11.

I want to share the home directory of Ubuntu with Windows. The Samba version is:

$ smbd --version
Version 4.23.6-Ubuntu-4.23.6+dfsg-1ubuntu2

when I create a new file in Ubuntu, it doesn't show in Windows.

If I restart the smbd service with systemctl restart smbd then it does show up.

When working in a Ubuntu 26.04, the system suddenly freezes and none of the keys on the keyboard or mouse work

I'm trying to install Ubuntu 24.04 LTS alongside Windows 11 (dual boot) on a brand new HP EliteBook x360 1030 G8, and the installation consistently fails at the partitioning step.

Hardware:

- HP EliteBook x360 1030 G8

- Samsung MZVLW256HEHP-000L7 NVMe SSD (256GB)

- Windows 11 pre-installed

Disk layout (from sudo parted /dev/nvme0n1 print):

Number  Start   End     Size    File system  Name
1       1049kB  211MB   210MB   fat32        EFI system partition  (boot, esp)
2       211MB   228MB   16.8MB               Microsoft reserved partition (msftres)
3       228MB   42.0GB  41.8GB  ntfs         Basic data partition (msftdata, no_automount)
4       255GB   256GB   826MB   ntfs         (hidden, diag, no_automount)

[213GB free space between partition 3 and 4]

What I did:

• I first tried the automatic "Install Ubuntu alongside Windows" option, which failed

• Then I tryed to select "Something else" for manual partitioning, created a new ext4 partition (nvme0n1p5, ~212GB) in the free space, mounted it on `/`, set the bootloader to `/dev/nvme0n1`, then clicked "Install Now".

Error:

In both cases :

OSError: could not get path to dev from kname: nvme0n1p5 could not get path to dev from kname: nvme0n1p5

What I already tried:

- Ubuntu 26.04 and 24.04 — same error on both

- Recreating the USB drive with Balena Etcher

- Disabling wifi during installation

- Minimal installation without updates or third-party drivers

- Checked Secure Boot — already disabled

- Checked Intel VMD in BIOS — "Configure Storage Controller for VMD" is unchecked

- BIOS is up to date according to HP diagnostic tool

Has anyone any idea ?

Thank you

Ubuntu 24.04 comes only with Python 3 but I need to work also with programs that only use Python 2. I know that the best way is via venv, yet I have to have an installation of Python 2 which I'm currently lacking of. What is the best way to install Python 2 without messing up with my Python 3 system-wide installation? Since Python 2 is not part of the apt anymore, I would prefer to install it from the most credible source rather than some random github repo. Cheers.

I have a strange behavior, started today, which I can hardly describe. Before , all worked OK!, and there are many more clients and computers on that that network:

A desktop, Ubuntu 22.04 connected using a LAN cable to a router, stopped reaching several internet sites as (not only): YouTube, Twitter, GitHub and so. Among other that connects OK (and not only)- Facebook, Gmail, Google search engine.

Also - VM machines installed on that desktop, sharing its internet connection (Bridge - meaning they get a local IP from the same router), connect to that same unreached sites the same time not going thru the desktop.

And- Connectivity to all other PC and NAS on LAN is reached OK.

To be sure it is not a web browser issue, even pushing to git, using command line, failed.

Trials

So what did I do (All yielded same no-success result):

1. Tried to connect using Private Browsing (Fire Fox).
2. Cleared all cache and history.
3. disabled all browser add-ons.
4. Reboot. Disable and re-enable LAN.
5. Disable LAN and connect via WiFi.
6. Installed Chromium.
7. Rebooted router (including telephony company modem).

What DID "solve"?

Connecting to a different network using same cable (reaching same external IP).

My first posting - UBUNTU newbie, but I am learning fast.

I have installed UB 20.04 onto my old Thinkpad T61 - with a 120GB SSD and 8GB RAM. Installed like a breeze. I am hoping to make this a replacement for my HomeSeer system on another Thinkpad running Windows 7.

I would really like to have BT 5.0 working on this laptop for the HomeSeer system. I bought one of these [USB Bluetooth Adapter for PC, QGOO Mini Bluetooth 5.0 EDR Dongle for Desktop Computer][1] - I got it yesterday, and oddly found after installing in the laptop - it does not work. I went back and did more research and found not supported in Linux. :-(

I can see it if I run the lsusb command:

root@UB-ThinkPad-T61:~# lsusb
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 002: ID 0bda:8771 Realtek Semiconductor Corp. Bluetooth Radio
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 002: ID 0483:2016 STMicroelectronics Fingerprint Reader
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

I did a little research to find this command, but not finding any way to get it to turn ON. in Settings, it shows "No Bluetooth Found - plug in a dongle".

Any help is appreciated - I can return this one, and get one which works...provided I can get a list of supported USB BT5.0 adapters.

Thanks in advance, Curtis

In the Software & Updates app in Ubuntu 20.04, in the Additional Drivers tab, there is an NVIDIA Server Driver option that I don't remember seeing in previous Ubuntu releases. The package name is nvidia-driver-440-server.

What are the differences between this and nvidia-driver-440?

Following my previous question How to get the standard GUI settings back and following https://www.howtogeek.com/353819/how-to-make-ubuntu-look-more-like-windows/ , I would like to change the appearance of the "Applications Menu" extension. I would like to replace the text and the down arrow with a Gnome logo like this one: http://icons.iconarchive.com/icons/alecive/flatwoken/512/Apps-Gnome-icon.png. I'm not looking for a complete Windows look, but 20+ years of using it, created some automatisms that are hard to shake.

distro: Ubuntu 18.04.3 LTS on i3 2310M, 8GB and SSD.

In Ubuntu 16.04 I had a Thunderbird icon in tray bar with unread messages but there isn't in Ubuntu 18.04.

Is there a chance to have it again?

I am trying to configure a simple email server that uses dovecot for the auth. I am inexperienced with the email procedures and I can't figure out what the problem is here: postfix/smtpd[26148]: fatal: no SASL authentication mechanisms

My postfix's config file:

tpd_banner = $myhostname ESMTP $mail_name (Ubuntu/GNU)
biff = no

# appending .domain is the MUA's job.
append_dot_mydomain = no

# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h

myhostname = localhost
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = $myhostname
mynetworks = 127.0.0.0/8, 10.0.0.0/24
mailbox_size_limit = 0
home_mailbox = Maildir/
virtual_mailbox_domains = /etc/postfix/vhosts
virtual_mailbox_base = /home/vmail
virtual_mailbox_maps = hash:/etc/postfix/vmaps
virtual_minimum_uid = 1000
virtual_uid_maps = static:5000
virtual_gid_maps = static:5000
recipient_delimiter = +
inet_interfaces = all
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noplaintext,noanonymous
smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth-client

My dovecot config:

auth_mechanisms = plain cram-md5
auth_verbose = yes
base_dir = /var/run/dovecot/
info_log_path = /var/log/dovecot.info
log_path = /var/log/dovecot
log_timestamp = "%Y-%m-%d %H:%M:%S "
mail_location = maildir:/home/vmail/%d/%n
passdb {
  args = /etc/dovecot/passwd
  driver = passwd-file
}
protocols = imap pop3
service auth {
  executable = /usr/lib/dovecot/auth
  user = root
}
service imap-login {
  chroot = login
  executable = /usr/lib/dovecot/imap-login
  user = dovecot
}
service imap {
  executable = /usr/lib/dovecot/imap
}
service pop3-login {
  chroot = login
  executable = /usr/lib/dovecot/pop3-login
  user = dovecot
}
service pop3 {
  executable = /usr/lib/dovecot/pop3
}
ssl = no
userdb {
  args = /etc/dovecot/users
  driver = passwd-file
}
valid_chroot_dirs = /var/spool/vmail
protocol pop3 {
  pop3_uidl_format = %08Xu%08Xv
}

What is wrong with this configuration?

These instructions for sharing host files with a guest are not working because there is no /usr/bin/qemu-kvm.

How do I create a file of size 10M, format it with ext3 filesystem and then mount it in /media/fuse?

I tried with

mkfs -t ext3 file

then to mount it

mount -t ext3 file /media/fuse

It didn't work because it said that file wasn't a block device. Can anybody help me?