I am having trouble connecting to the eduroam Wi-Fi network at my school on Ubuntu. When I try to connect, it takes a long time and usually only connects after multiple attempts. Sometimes it fails several times before finally connecting.

I do not have this issue with other Wi-Fi networks. They connect quickly and work normally. The problem only happens with eduroam.

Here is the Eduroam security configuration that shows the security configuration I am using for eduroam.

Has anyone experienced this issue before or knows what might be causing the slow connection and repeated connection attempts? I would appreciate any help or suggestions on how to fix this.

Additional info: I am running Ubuntu 24.04.4 on a ThinkPad T14s.

Have tried all online instructions and suggestions available. Nothing has helped so far. Tuta uses a different type of file for their app download. Proton mail installs easily from terminal but tutamail uses some type of executable.

Maybe someone here might help?

Can't connect to various websites via text-based browser W3M.

Works in Lynx however.

Cookies are activated in settings (default, and I have viewed generated cookies from other websites to make sure).

Error message when attempting:

No matter what I do I can not print or scan from my ASUS Ubuntu laptop. I've tried CUPS, HPLIP, direct USB; always get a can't communicate error. Can anybody help?

On my system I have NixOS, Windows 11 and Ubuntu.

I can boot into NixOS and after reboot it will boot again into NixOS. When I boot into the Windows, after reboot it will also boot into NixOS. The output of the efibootmgr is preserved during switching between those two OSes.

But when I boot into Ubuntu, it always overwrites the boot order, making Ubuntu the first on the list.

Is there a way to prevent Ubuntu from ever changing the boot order unless I manually change it?

Did anyone get this problem after upgrading?. If yes then please tell me, i need the dock back

OK, am very close to completely abandoning the idea of having VMWare installed on my Ubuntu 24.04 LTS machine. So I have seen the YouTube videos, where the dependencies are installed, and then VMware, and everything works peachy. This is not the case with my experience.

I have installed the dependencies with the following:

sudo apt install curl git gcc-12 libgcc-12-dev build-essential linux-headers-$(uname -r) -y

Then, VMWare, to no avail. When I try to run the required modules, (Before you can run VMWare several modules must be compiled and loaded into running kernel)

Then, the error code "Unable to install vmmon and vmnet modules for VMware"

My apologies in advance, I am a rather novice Ubuntu user, love the OS, and when I installed VMWare on my old Windows 10 machine, it just worked. Is there something obvious I am missing?

I have a Brother HL-1212W. I eventually got it working some years ago. After OS upgrades to Xubuntu 22.04 it didn't work. What I describe below is the cleaned up version of what I did, there were many failed iterations before I got here. I will give an answer to this question later, saying how I solved it (Oh yes I did!).

As my network had also changed I did a fresh WPS register of the printer with my WIFI Access point. The Internet light on the printer went green - which says it's connected.

I downloaded the 'Driver install tool' from https://www.brother.co.uk/support/hl-1212w/downloads which gave me the file linux-brprinter-installer-2.2.6-0.gz, which I ungzip'ed and ran. All worked perfectly.

When it asked 'Specify dev uri' I chose cups-brf as a placeholder (that's a braille printer and I was stumbling about in the dark, frankly).

I then went to http://localhost:631/admin on the browser, clicked 'Manage printers', then HL1212W in the list, then 'Administration', then 'Modify printer' and the 'Discovered' Brother printer from the list. When I to the main page for the printer it now showed as a dnssd printer with a long id string.

I queued a test page, it showed in the printer queue on its main page, but the printer went to 'Unable to connect to printer'. I was never able to get past that point no matter what I did. Neither could I find any trace of the printer in the DHCP leases, although using a traffic tracer I did find it had a strange IP address completely outside my subnet.

My Ubuntu 25.10 only laptop has suddenly started needing over 30 minutes to boot. Looking at the logs and systemd-analyze blame it is clear that the Ubuntu OS is not the culprit, taking just seconds to boot. snap takes the longest time and I would prefer not to have to load it, but that is another issue.

It seems that my BIOS/UEFI configuration could be corrupted. I cannot boot into BIOS/UEFI using F2 as the keyboard is dead during this extended boot time, so I am considering running sudo systemctl reboot --firmware as I have been told this will cause my laptop to boot into the BIOS/UEFI on the next boot.

I have three questions:

1. Is sudo systemctl reboot --firmware the best way for me to boot into the BIOS/UEFI?
2. Is this safe? I don't want to not be able to reboot into my Ubuntu later.
3. What should I look at in the BIOS/UEFI? What could be causing a 30 minute wait before booting?

I installed lubuntu 25.10 on an old desktop today. I made sure to turn on the "Log in automatically without asking for the password" and the password was blank. It installed without complaint.

Once that was done I need to install gparted so I opened a terminal and type

sudo apt update

and it asked for a password. I hit enter and it claims that is wrong. It's not, or it should not be wrong because I left the password blank.

Is there a way to correct this?

I have a iproute2 configuration issue in Ubuntu 24.04. I’m using several ISPs, and the VLANs cannot communicate with each other. There is no routing configured on the system.

Interfaces and Gateways

• enp1s0
  IP: 172.27.0.245
  Gateway: 172.27.0.1
• enp1s0.2 (VLAN 2)
  IP: 192.168.202.245
  Gateway: 192.168.202.1
• enp1s0.40 (VLAN 40)
  IP: 172.29.0.245
  Gateway: 172.29.0.1

I need for any traffic generated in the session be routed through that interface. example: If I connect to VLAN40 172.29.245 then all traffic must go out 172.29.0.1. I found a way to do this by setting up a special user I use Policy routing o UUID. the problem is if I need to "sodo" or "su" then the user now root and therefore the IPROUTE2 rt_table no longer applies.

Is there any way within the session (maybe with an environment) to specify the IP 172.27.0.245 or enp1s0.40 as the condition to using this interface?

I have made it work with the following entries.

root@pcr-svr2:/home/vlan40# ip route list table 40
default via 172.29.0.1 dev enp1s0.40 proto static metric 10
root@pcr-svr2:/home/vlan40# ip rule list |grep VLAN40
10:     from 172.29.0.245 lookup VLAN40 proto static
25:     from all uidrange 0-42 lookup VLAN40 proto static
40:     from all uidrange 11040-11040 lookup VLAN40 proto static

root@pcr-svr2:/home/vlan40# traceroute -4 -n -m2 google.com
traceroute to google.com (74.125.136.139), 2 hops max, 60 byte packets
 1  172.27.0.1  0.243 ms  0.247 ms  0.336 ms
 2  159.111.192.113  6.387 ms  6.625 ms  6.327 ms
root@pcr-svr2:/home/vlan40# exit
exit
vlan40@pcr-svr2:~$ traceroute -4 -n -m2 google.com
traceroute to google.com (74.125.136.113), 2 hops max, 60 byte packets
 1  172.29.0.1  0.284 ms  0.222 ms  0.189 ms
 2  159.111.192.113  2.527 ms  2.702 ms  2.434 ms

****as you see, if I am user vlan40 I go the correct GW, but if I am root (or any other user) I use a different GW/

Using iif was suggested, but that did not help.

I was hoping maybe something could be done with an environment variable, but I had no luck. I considered using NAMESPACE, but did not have success getting anything built that would work.

The HP x2 elite gen 8 laptop was designed for Windows, and Bang & Olufsen worked on improving the sound for it. Ubuntu 25.10 is installed. Apparently, they made some changes to the design (maybe the chip; by the way, some Realtek worked with Windows 11). Currently, the sound device only works in mono mode. I'd like to fix this if possible. Is that possible?

I have an old imac (Intel) with Ubuntu 24 installed. I lost the Wifi after install. I can`t find experience with the PCI-ID combination 14e4: 43 28 (rev 5).

lspci -vnn | grep Network gives:

04:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4321 802.11a/b/g/n [14e4:4328] (rev 05)

iwconfig gives:

lo no wireless extensions.

ens5 no wireless extensions.

Ubuntu 24.04.3 runs slowly with a lot of disk activity. How can I stop this or calm it down?

I'm trying to update fw on a Dell Latitude 5500. fwupdmgr is checking for a shim in the EFI/debian folder.

What's up with that?

Obviously it's failing because I'm running Ubuntu 24.04.4.

Please accept my apologies for not immediately providing log files. If needed, please tell me what information will help.

I have configured a IpSec tunnel between the Azure VM and the AWS S2S VPN. the ipsec tunnel came up but the BGP session was not coming up with a specific cidr in the leftsubnet/rightsubnet. when in mention 0.0.0.0/0 cidr in the leftsubnet/rightsubnet of ipsec config the BGP tunnel comes up but the reachability to the server is cut off. I have even tried configuring vti-routing=no, still the reachability to the server is cut off.

Is there any possibility to keep both the BGP and reachability to the server UP??

IpSec.conf:

conn aws

    \# Use IKEv2 (insist means IKEv1 is not allowed)

    ikev2=insist



    \# Local Gateway Settings

    left=%defaultroute          # Your public IP

    leftsubnet=0.0.0.0/0

    leftid=35.181.45.118          # Local identifier



    \# Remote Gateway Settings

    right=13.39.137.239       # Remote public IP

    rightsubnet=0.0.0.0/0

    rightid=13.39.137.239         # Remote identifier





\# Security Parameters

    authby=secret              # Use PSK for authentication

    ike=aes128-sha1;modp2048 # IKE proposal

    esp=aes128-sha1          # ESP (Phase 2) proposal



    vti-interface=vti0

    vti-routing=no



    \# Operation

    #auto=start

Scan fails with
"Failed to read duplicity-new-signatures.20260313T002340Z.to.20260319T124720Z.sigtar.gz: Compressed file ended before the end-of-stream marker was reached"

My way to get Ubuntu-Mate 24.04. I have a Dual boot system. With the Ubuntu-Mate 24.04 Distro it was not possible to replace a former used Ubuntu Version by Ubuntu-Mate (I did denied expert modus). Therefore I did use the 22.04 Mate-Distro, to replace my former Ubuntu. After installation, I did update my system with the latest 22.04 packets. And via :

sudo do-release-upgrade

I got Ubuntu-Mate 24.04 ?!

I still have the Ubuntu-Mate desktop, but cat shows me something else :

cat /etc/os-release
PRETTY_NAME="Ubuntu 24.04.4 LTS"
NAME="Ubuntu"
VERSION_ID="24.04"
VERSION="24.04.4 LTS (Noble Numbat)"
VERSION_CODENAME=noble
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=noble
LOGO=ubuntu-logo

The Mate-LTS ends with 27.04.

I expect with :

sudo do-release-upgrade

I will get a LTS-26.04.

My favourite, to stay with the Mate Desktop, which problems could I have after 27.04 in respect to security updates ?

I'm using Ubuntu 24.04.4 (with Xfce) on the Intel NUC 8 (with UHD Graphics 620 integrated GPU).

My current problem is that all browsers (Chromium and Firefox) render websites very slowly (even local sites during development). The intel_gpu_top does not show blitter or video engine usage when opening a website in browser or video in VLC player.

Please help me find the cause of the problem.

UPD: journalctl has error - "kernel: i915 0000:00:02.0: [drm] ERROR Failed to probe lspcon"

UPD: chrome://media-internals/ shows error when video playback:

VaapiVideoDecoder: failed Initialize()ing the frame pool

UPD: chrome://gpu/ shows errors (after resetting the chromium flags to default, only the first error remained):

WARNING:sandbox/policy/linux/sandbox_linux.cc:405] : InitializeSandbox() called with multiple threads in process gpu-process.
ERROR:ui/gl/egl_util.cc:92] : EGL Driver message (Error) eglCreateContext: Requested version is not supported
ERROR:ui/gl/egl_util.cc:92] : EGL Driver message (Error) eglCreateContext: Requested version is not supported
ERROR:gpu/command_buffer/service/gl_utils.cc:387] : [.WebGL-0x201c07ec1800]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels

UPD: FIrefox uses GPU video engine when video playback (I just missed it).

UPD: Speedometer3.1 score in Chromium is 7.11, score with --disable-gpu flag is also 6.86. So hardware acceleration definitely doesn't work.

UPD: glmark2 Score: 5136

UPD: Xorg uses up to 50% CPU when simply resizing xfce4-terminal window

DETAILED INFO

htop and intel_gpu_top when idle:

htop and intel_gpu_top when opening website in the Chromium browser:

htop and intel_gpu_top when opening .webm (or .mp4) video in the VLC player:

uname -a:

Linux m 6.17.0-20-generic #20~24.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu Mar 19 01:28:37 UTC 2 x86_64 x86_64 x86_64 GNU/Linux

cat /etc/default/grub:

GRUB_DEFAULT=0
GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT=0
GRUB_DISTRIBUTOR=`( . /etc/os-release; echo ${NAME:-Ubuntu} ) 2>/dev/null || echo Ubuntu`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""

inxi -G:

Graphics:
  Device-1: Intel WhiskeyLake-U GT2 [UHD Graphics 620] driver: i915 v: kernel
  Display: x11 server: X.Org v: 21.1.11 driver: X: loaded: modesetting
    unloaded: fbdev,vesa dri: iris gpu: i915 resolution: 1920x1080~60Hz
  API: EGL v: 1.5 drivers: iris,swrast platforms: gbm,x11,surfaceless,device
  API: OpenGL v: 4.6 compat-v: 4.5 vendor: intel mesa
    v: 25.2.8-0ubuntu0.24.04.1 renderer: Mesa Intel UHD Graphics 620 (WHL GT2)

vainfo:

libva info: VA-API version 1.20.0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so
libva info: Found init function __vaDriverInit_1_20
libva info: va_openDriver() returns 0
vainfo: VA-API version: 1.20 (libva 2.12.0)
vainfo: Driver version: Intel iHD driver for Intel(R) Gen Graphics - 24.1.0 ()
vainfo: Supported profile and entrypoints
      VAProfileNone                   : VAEntrypointVideoProc
      VAProfileNone                   : VAEntrypointStats
      VAProfileMPEG2Simple            : VAEntrypointVLD
      VAProfileMPEG2Simple            : VAEntrypointEncSlice
      VAProfileMPEG2Main              : VAEntrypointVLD
      VAProfileMPEG2Main              : VAEntrypointEncSlice
      VAProfileH264Main               : VAEntrypointVLD
      VAProfileH264Main               : VAEntrypointEncSlice
      VAProfileH264Main               : VAEntrypointFEI
      VAProfileH264Main               : VAEntrypointEncSliceLP
      VAProfileH264High               : VAEntrypointVLD
      VAProfileH264High               : VAEntrypointEncSlice
      VAProfileH264High               : VAEntrypointFEI
      VAProfileH264High               : VAEntrypointEncSliceLP
      VAProfileVC1Simple              : VAEntrypointVLD
      VAProfileVC1Main                : VAEntrypointVLD
      VAProfileVC1Advanced            : VAEntrypointVLD
      VAProfileJPEGBaseline           : VAEntrypointVLD
      VAProfileJPEGBaseline           : VAEntrypointEncPicture
      VAProfileH264ConstrainedBaseline: VAEntrypointVLD
      VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice
      VAProfileH264ConstrainedBaseline: VAEntrypointFEI
      VAProfileH264ConstrainedBaseline: VAEntrypointEncSliceLP
      VAProfileVP8Version0_3          : VAEntrypointVLD
      VAProfileVP8Version0_3          : VAEntrypointEncSlice
      VAProfileHEVCMain               : VAEntrypointVLD
      VAProfileHEVCMain               : VAEntrypointEncSlice
      VAProfileHEVCMain               : VAEntrypointFEI
      VAProfileHEVCMain10             : VAEntrypointVLD
      VAProfileHEVCMain10             : VAEntrypointEncSlice
      VAProfileVP9Profile0            : VAEntrypointVLD
      VAProfileVP9Profile2            : VAEntrypointVLD

glxinfo -B:

name of display: :0.0
display: :0  screen: 0
direct rendering: Yes
Extended renderer info (GLX_MESA_query_renderer):
    Vendor: Intel (0x8086)
    Device: Mesa Intel(R) UHD Graphics 620 (WHL GT2) (0x3ea0)
    Version: 25.2.8
    Accelerated: yes
    Video memory: 31769MB
    Unified memory: yes
    Preferred profile: core (0x1)
    Max core profile version: 4.6
    Max compat profile version: 4.6
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 3.2
OpenGL vendor string: Intel
OpenGL renderer string: Mesa Intel(R) UHD Graphics 620 (WHL GT2)
OpenGL core profile version string: 4.6 (Core Profile) Mesa 25.2.8-0ubuntu0.24.04.1
OpenGL core profile shading language version string: 4.60
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile

OpenGL version string: 4.6 (Compatibility Profile) Mesa 25.2.8-0ubuntu0.24.04.1
OpenGL shading language version string: 4.60
OpenGL context flags: (none)
OpenGL profile mask: compatibility profile

OpenGL ES profile version string: OpenGL ES 3.2 Mesa 25.2.8-0ubuntu0.24.04.1
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20

glxheads :0:

Name: :0
  Display:     0x5cf794bf0da0
  Window:      0x5c00002
  Context:     0x5cf794c891e0
  GL_VERSION:  4.6 (Compatibility Profile) Mesa 25.2.8-0ubuntu0.24.04.1
  GL_VENDOR:   Intel
  GL_RENDERER: Mesa Intel(R) UHD Graphics 620 (WHL GT2)

journalctl -b | grep -i i915:

kernel: i915 0000:00:02.0: [drm] Found coffeelake/ult (device ID 3ea0) integrated display version 9.00 stepping N/A
kernel: i915 0000:00:02.0: [drm] VT-d active for gfx access
kernel: i915 0000:00:02.0: vgaarb: deactivate vga console
kernel: i915 0000:00:02.0: [drm] Using Transparent Hugepages
kernel: i915 0000:00:02.0: vgaarb: VGA decodes changed: olddecodes=io+mem,decodes=io+mem:owns=io+mem
kernel: i915 0000:00:02.0: [drm] Finished loading DMC firmware i915/kbl_dmc_ver1_04.bin (v1.4)
kernel: mei_hdcp 0000:00:16.0-b638ab7e-94e2-4ea2-a552-d1c54b627f04: bound 0000:00:02.0 (ops i915_hdcp_ops [i915])
>>> kernel: i915 0000:00:02.0: [drm] *ERROR* Failed to probe lspcon
kernel: i915 0000:00:02.0: [drm] Registered 3 planes with drm panic
kernel: [drm] Initialized i915 1.6.0 for 0000:00:02.0 on minor 1
kernel: fbcon: i915drmfb (fb0) is primary device
kernel: i915 0000:00:02.0: [drm] fb0: i915drmfb frame buffer device
kernel: snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops intel_audio_component_bind_ops [i915])

sudo dmesg | grep -i -e 'huc' -e 'guc' with enable_guc=3:

[   11.620108] Setting dangerous option enable_guc - tainting kernel
[   11.623029] i915 0000:00:02.0: [drm] GT0: Incompatible option enable_guc=3 - GuC submission is N/A
[   11.742182] i915 0000:00:02.0: [drm] GT0: GuC firmware i915/kbl_guc_70.1.1.bin version 70.1.1
[   11.742190] i915 0000:00:02.0: [drm] GT0: HuC firmware i915/kbl_huc_4.0.0.bin version 4.0.0
[   11.769005] i915 0000:00:02.0: [drm] GT0: HuC: authenticated for all workloads
[   11.769014] i915 0000:00:02.0: [drm] GT0: GUC: submission disabled
[   11.769017] i915 0000:00:02.0: [drm] GT0: GUC: SLPC disabled

sudo dmesg | grep -i -e 'huc' -e 'guc' with enable_guc=2:

[   10.542016] Setting dangerous option enable_guc - tainting kernel
[   10.644744] i915 0000:00:02.0: [drm] GT0: GuC firmware i915/kbl_guc_70.1.1.bin version 70.1.1
[   10.644753] i915 0000:00:02.0: [drm] GT0: HuC firmware i915/kbl_huc_4.0.0.bin version 4.0.0
[   10.671981] i915 0000:00:02.0: [drm] GT0: HuC: authenticated for all workloads
[   10.671989] i915 0000:00:02.0: [drm] GT0: GUC: submission disabled
[   10.671992] i915 0000:00:02.0: [drm] GT0: GUC: SLPC disabled

sudo dmesg | grep -i i915 without changing enable_guc:

[   23.239267] i915 0000:00:02.0: [drm] Found coffeelake/ult (device ID 3ea0) integrated display version 9.00 stepping N/A
[   23.241227] i915 0000:00:02.0: [drm] VT-d active for gfx access
[   23.299824] i915 0000:00:02.0: vgaarb: deactivate vga console
[   23.301624] i915 0000:00:02.0: [drm] Using Transparent Hugepages
[   23.304362] i915 0000:00:02.0: vgaarb: VGA decodes changed: olddecodes=io+mem,decodes=io+mem:owns=io+mem
[   23.306559] i915 0000:00:02.0: [drm] Finished loading DMC firmware i915/kbl_dmc_ver1_04.bin (v1.4)
[   23.357015] mei_hdcp 0000:00:16.0-b638ab7e-94e2-4ea2-a552-d1c54b627f04: bound 0000:00:02.0 (ops i915_hdcp_ops [i915])
[   23.625872] i915 0000:00:02.0: [drm] *ERROR* Failed to probe lspcon
[   23.627398] i915 0000:00:02.0: [drm] Registered 3 planes with drm panic
[   23.627403] [drm] Initialized i915 1.6.0 for 0000:00:02.0 on minor 1
[   23.670628] fbcon: i915drmfb (fb0) is primary device
[   23.670635] i915 0000:00:02.0: [drm] fb0: i915drmfb frame buffer device
[   23.677392] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops intel_audio_component_bind_ops [i915])

HP x2 elite gen 8, Ubuntu 25.10 is installed. There's an auto-brightness sensor, and if you type "monitor-sensor" in the terminal, the values ​​change when you cover the top of the display with your hand. I'm a newbie, and I bought the tablet to learn Linux.The hardware buttons on the keyboard work and change the brightness. The brightness slider also works.

You're absolutely right—only the sensor readings change, the screen brightness DOESN'T! That's exactly why I asked the question here...and yes, I turned on the switch in the energy saving settings reddit.com/r/linuxquestions/comments/1iwhw3o/… In this thread, someone apparently had the same problem: with each reboot, the name or serial number of this sensor changes dynamically... but he didn't say where exactly he inserted the command..

I installed the "Adaptive Brightness" extension, and it shows how the brightness SHOULD change, but it doesn't in reality... the system doesn't respond to this particular sensor. I don't understand where to go to change the settings.

So I've bought a JBL Quantum 100M2

I've tested it on windows and It works flawlesly when I select the option "Headset" when I plug it. (Illustation bellow)

⬆️ Realtek input type select selection.

When I try to do the same thing in Ubuntu 25.10 there's no option for selecting the mic from my headset, and the default mic selected (family 17h/19h/1ah HD Audio Controller.

I've tried adding these headset options, individually, to the alsa config in /etc/modprobe.d/alsa-base.conf:

options snd-hda-intel model=headset-mode
options snd-hda-intel model=alc287-acer
options snd-hda-intel model=dell-headset-multi

I've tried those above and various others I got from https://www.kernel.org/doc/html/latest/sound/hd-audio/models.html

I've also tried disabling fast boot in combination with the configs above, but with no success.

I have no experience at all with this type of configuration, is there an easy solution for this? Is this a known bug?

Additional info:

• Motherboard model: Nitro AN515-46
• Using pulseaudio 1.4.7
• I've tried using Analog stereo Duplex and Pro audio. Neither of those worked
• Realtek ALC287

I put my laptop into sleep mode then when I wake it up most of my open apps when I try to click on them crash, others I can’t do anything with except force them to quit.

When I try to run any command in the terminal I get “input/output error” message and even plasmashell itself closes so I force a shutdown using the hardware power button.

I can consistently replicate this whenever I put my laptop into sleep mode. This is a Kubuntu 24.04 install from earlier this week.

I am facing a lot of trouble in trying to install [wayfire][1], which is a compositor for wayland inspired (or based, idk) in the old, old compiz.

The problem is that this application requires a LOT of dependencies and these dependencies have little to no documentation in how to install them (check the README on github), so I am asking help to see if there is any noble soul who could just show what are the commands that are necessary to install them.

For example, I don't have the slightest idea on how to install Pango or PangoCairo.

Also, you might be asking to yourself "Why would a person be interested in installing such a compositor in 2023 ?".

Well, my Calculus professor is almost blind, but he can see a little and he uses compiz in order to have accessibility to his desktop (he is also a programmer), but the problem is that he is still using ubuntu 16.04, since the more recent versions stopped using this compositor, so he asked my help to try to install some application similar to compiz to see if it works, I tried compiz-fusion, but didn't work, so my final hope is wayfire.

Any help will be appreciated. And the repo of wayfire is here

I am asking this question because I was facing the same issue and could not find a complete solution so here it is.
Steps to follow :
1. Open Files app, go to home.
2. Open .bashrc file using text editor (hit ctrl+H if .bashrc file is not seen)
3. Scroll all the way to the end and type this -

export PATH="$HOME/.local/bin:$PATH"

And save the file.
4. Now open the terminal and type -

source ~/.bashrc

5. You can either use option 4 or just restart your computer.

EDIT: Now works, but please see comment below.

I have setup bind9 following this tutorial.

I am now able to ping my NS by name, as well as my main computer, each of which I correctly entered A & PTR records for. So, basically I have a working local DNS server. named-checkconf and named-checkzone don't give any errors for forward and reverse zones.

The issue is that when I configure the clients to use this DNS server, they "loose the internet". In my interpretation, my bind9 server only answers what is explicitly listed in his zones, but fails to forward the queries he isn't able to answer to.

named.conf.options does specify forwarders.

What configuration should I add to make my NS correctly forward to OpenDNS FamilyShield (my chosen authoritative DNS server in this case) ?

Thanks a lot

EDIT: To be clear, the aimed purpose of my NS should be to resolve local requests (aka, make me able to contact LAN machines by names), but to forward all "internet" requests to a bigger DNS server.

I've just installed tor via apt, and it seems that service is working fine:

$ sudo service tor status
● tor.service - Anonymizing overlay network for TCP (multi-instance-master)
   Loaded: loaded (/lib/systemd/system/tor.service; enabled; vendor preset: enabled)
   Active: active (exited) since Wed 2018-06-13 19:04:12 UTC; 12min ago
  Process: 8050 ExecStart=/bin/true (code=exited, status=0/SUCCESS)
 Main PID: 8050 (code=exited, status=0/SUCCESS)
   CGroup: /system.slice/tor.service

Jun 13 19:04:11 NanoPi-NEO systemd[1]: Starting Anonymizing overlay network for TCP (multi-instance-master)...
Jun 13 19:04:12 NanoPi-NEO systemd[1]: Started Anonymizing overlay network for TCP (multi-instance-master).

but in running processes I can't see it:

$ ps -aux | grep /usr/bin/tor
michail  10962  0.0  0.1   4140   536 pts/0    S+   19:16   0:00 grep --color=auto /usr/bin/tor

On the other hand, my mate did the same thing on his machine, and service also seems bo be run:

$ sudo service tor status
● tor.service - Anonymizing overlay network for TCP (multi-instance-master)
   Loaded: loaded (/lib/systemd/system/tor.service; enabled; vendor preset: enabled)
   Active: active (exited) since Thu 2016-02-11 17:28:03 CET; 2 years 4 months ago
 Main PID: 676 (code=exited, status=0/SUCCESS)
   CGroup: /system.slice/tor.service

Feb 11 17:28:03 odroid64 systemd[1]: Starting Anonymizing overlay network for TCP (multi-instance-master)...
Feb 11 17:28:03 odroid64 systemd[1]: Started Anonymizing overlay network for TCP (multi-instance-master).

but also he can see it running ps:

$ ps -aux | grep /usr/bin/tor
debian-+   988  0.1  2.0  42804 35752 ?        Ss   18:32   0:16 /usr/bin/tor --defaults-torrc /usr/share/tor/tor-service-defaults-torrc -f /etc/tor/torrc --RunAsDaemon 0
szklarz  10098  0.0  0.0   6772   900 pts/8    S+   21:16   0:00 grep --color=auto /usr/bin/tor

Finally, tor service on my occ isn't really running till I star it typing command:

$sudo tor

I assume it is caused by some permission issues, but which one? Could you please help?

$ ps -A | grep tor
   67 ?        00:00:00 file-storage
  484 ?        00:00:00 rpimonitord
  492 ?        00:00:00 rpimonitord
  493 ?        00:00:00 rpimonitord
 1637 ?        00:00:00 (tor)

$ sudo netstat -anutp | grep tor
michail@NanoPi-NEO:~$ 

For some reason, Scroll Lock is not enabled by default. I submit this bug as an enhancement, since as of this moment, I have no idea why Scroll Lock is not already enabled by default. That is the behavior that I expect.

My laptop keyboard does not have a key for Scroll Lock, so I did not notice anything was amiss. It is not until I purchased a keyboard with LED lighting that I noticed that when I pressed the Scroll Lock key, nothing was happening. I was expecting that if I pressed the Scroll Lock key, then the Scroll Lock indicator LED would turn on and the LED in my keyboard would turn on as well, but none of those actions happen. The LED indicator for Caps Lock and Num Lock worked fine, but not for Scroll Lock.

How can I make the Scroll Lock key to work?

I got this output:

fsck from util-linux 2.20.1
e2fsck 1.42.9 (4-Feb-2014)
/dev/mapper/ubuntu--vg-root is mounted.
e2fsck: Cannot continue, aborting.

after I used the fsck command. Any answers?

I just bought a cheap USB WiFi adapter from eBay. It is Mediatek based. lsusb outputs:

Bus 001 Device 003: ID 148f:7601 Ralink Technology, Corp. 

I'm on 3.13 kernel, and the driver provided in the cd shipped with the adapter didn't wanted to compile. I've followed this guide and then everything compiled fine.

The problem is, when I plug in the adapter it connects fine, but after a couple of seconds, the kernel panics.

[ 1924.881615]  ffff8800bfb03b30 ffffffff8160af96 ffff8800bfb03b78 ffffffff8160ea9b
[ 1924.881654]  0000000000000001 ffff8800bfb03b60 ffff88003b7bbf00 ffff88003971c200
[ 1924.881694] Call Trace:
[ 1924.881706]  <IRQ>
[ 1924.881717]  [<ffffffff8160af96>] skb_put+0x46/0x50
[ 1924.881748]  [<ffffffff8160ea9b>] skb_try_coalesce+0xbb/0x450
[ 1924.881775]  [<ffffffff816634bd>] tcp_try_coalesce.part.40+0x2d/0x90
[ 1924.881804]  [<ffffffff816644b0>] tcp_queue_rcv+0x100/0x140
[ 1924.881829]  [<ffffffff816661fa>] tcp_data_queue+0x28a/0xcf0
[ 1924.881856]  [<ffffffff81669514>] tcp_rcv_established+0x1b4/0x680
[ 1924.881883]  [<ffffffff81673345>] tcp_v4_do_rcv+0x1b5/0x480
[ 1924.881908]  [<ffffffff81675750>] tcp_v4_rcv+0x780/0x7a0
[ 1924.881949]  [<ffffffffa06c19e6>] ? CmmRxnonRalinkFrameIndicate+0x26/0x50 [mt7601Usta]
[ 1924.881986]  [<ffffffff81650778>] ip_local_deliver_finish+0xa8/0x210
[ 1924.882014]  [<ffffffff81650a78>] ip_local_deliver+0x48/0x80
[ 1924.882041]  [<ffffffff816503fd>] ip_rcv_finish+0x7d/0x350
[ 1924.882067]  [<ffffffff81650d48>] ip_rcv+0x298/0x3d0
[ 1924.882091]  [<ffffffff8161a906>] __netif_receive_skb_core+0x666/0x840
[ 1924.882121]  [<ffffffff8161aaf8>] __netif_receive_skb+0x18/0x60
[ 1924.882147]  [<ffffffff8161b61e>] process_backlog+0xae/0x1a0
[ 1924.882173]  [<ffffffff8161aee2>] net_rx_action+0x152/0x250
[ 1924.882200]  [<ffffffff8106caec>] __do_softirq+0xec/0x2c0
[ 1924.882224]  [<ffffffff8106d035>] irq_exit+0x105/0x110
[ 1924.882250]  [<ffffffff817287d6>] do_IRQ+0x56/0xc0
[ 1924.882275]  [<ffffffff8171df6d>] common_interrupt+0x6d/0x6d
[ 1924.883596]  <EOI>
[ 1924.883607]  [<ffffffff813690d7>] ? clear_page_c+0x7/0x10
[ 1924.884018]  [<ffffffff811574ab>] ? get_page_from_freelist+0x55b/0x950
[ 1924.884018]  [<ffffffff81157a0d>] __alloc_pages_nodemask+0x16d/0xba0
[ 1924.884018]  [<ffffffff8115b9a0>] ? release_pages+0x80/0x210
[ 1924.884018]  [<ffffffff811976ba>] alloc_pages_vma+0x9a/0x140
[ 1924.884018]  [<ffffffff81178d1b>] handle_mm_fault+0xb2b/0x10
[ 1924.884018]  [<ffffffff8117dff2>] ? vma_merge+0x232/0x340
[ 1924.884018]  [<ffffffff81721a24>] __do_page_fault+0x184/0x560
[ 1924.884018]  [<ffffffff8101b7d9>] ? sched_clock+0x9/0x10
[ 1924.884018]  [<ffffffff8109d13d>] ? sched_clock_local+0x1d/0x80
[ 1924.884018]  [<ffffffff811112fc>] ? acct_account_cputime+0x1c/0x20
[ 1924.884018]  [<ffffffff8109dd84>] ? vtime_account_user+0x54/0x60
[ 1924.884018]  [<ffffffff81721e1a>] do_page_fault+0x1a/0x70
[ 1924.884018] [<ffffffff8171e288>] page_fault+0x28/0x30
[ 1924.884018] Code: 00 00 48 89 44 24 10 8b 87 c8 00 00 00 48 89 44 24 08 48 8b 87 d8 00 00
31 c0 e8 94 6e ff ff <0f> 0b 55 48 89 e5 0f 0b 55 48 48 89 e5 0f 0b 55 48 89 e5 0f 0b 55
[ 1924.884018] RIP [<ffffffff817188eb>] skb_panic+0x63/0x65
[ 1924.884018]  RSP <ffff8800bfb03b00>
[ 1924.906502] Kernel panic - not syncing: Fatal exception in interrupt
[ 1924.907481] drm_kms_helper: panic occurred, switching back to text console

For a given hardware configuration, how do I find out if Ubuntu will run on it? What considerations should I take into account when choosing an Ubuntu version and flavour such as:

• Xubuntu with a lighter desktop than the usual Gnome and Unity
• Lubuntu with the even lighter LXDE desktop

Obviously Ubuntu does not run on some processor architectures. So how do I go about choosing the right version and derivate. How can I find out the minmal system requirements?