Hi,
since I connected my laptop to a USB 3 dock the laptop's intrenal soundcard is no longer detected after reboot. (I'm not entirely sure if the problem emerged right afterwards)
KDE shows a "Dummy Output" only and no sound is being played.
What helps is to go to the sound configuration within Yast and a) delete the present configuration and b) edit the than unconfigured sound card. Yast restarts the sound system in some sort of way I was not able to do manually.
I tried quite a lot of things to resurrect the initial recognition of the card.
I deleted /etc/modprobe.d/50-sound.conf and let Yast recreate it, I tried to restart alsa via `systemctl restart alsasound.service`, `alsactl init`, tried to tinker with the alsamixer ... nothing helped so far.
Recently, I booted from a Leap 15.1 live USB stick and sound worked out of the box. This should rule out hardware problems.
On another and different laptop I tested the other day it helped to add "snd-intel-dspcfg.dsp_driver=1" to the boot options. Not surprisingly, this didn't help with this issue.
Another thing I noticed where this two messages during boot:
hdaudio hdaudioC0D0: Unable to bind the codec
See the journalctl's snippet below:
Code:
# journalctl -b | egrep -i 'snd|codec'
Mar 13 15:14:39 thinkpad kernel: Command line: BOOT_IMAGE=/boot/vmlinuz-5.5.8-3.g1538c30-default root=UUID=903728c8-3fc7-402b-8757-4909aca7bef2 resume=/dev/disk/by-uuid/2ffbed8e-fc8d-4e8b-9846-9a1c0aaaaac3 splash=silent quiet showopts snd-intel-dspcfg.dsp_driver=1
Mar 13 15:14:39 thinkpad kernel: Kernel command line: BOOT_IMAGE=/boot/vmlinuz-5.5.8-3.g1538c30-default root=UUID=903728c8-3fc7-402b-8757-4909aca7bef2 resume=/dev/disk/by-uuid/2ffbed8e-fc8d-4e8b-9846-9a1c0aaaaac3 splash=silent quiet showopts snd-intel-dspcfg.dsp_driver=1
Mar 13 15:14:39 thinkpad kernel: snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
Mar 13 15:14:39 thinkpad systemd-modules-load[249]: Inserted module 'snd_hda_intel'
Mar 13 15:14:39 thinkpad dracut-cmdline[273]: Using kernel command line parameters: resume=UUID=2ffbed8e-fc8d-4e8b-9846-9a1c0aaaaac3 root=UUID=903728c8-3fc7-402b-8757-4909aca7bef2 rootfstype=btrfs rootflags=rw,relatime,ssd,space_cache,subvolid=257,subvol=/@,subvol=@ BOOT_IMAGE=/boot/vmlinuz-5.5.8-3.g1538c30-default root=UUID=903728c8-3fc7-402b-8757-4909aca7bef2 resume=/dev/disk/by-uuid/2ffbed8e-fc8d-4e8b-9846-9a1c0aaaaac3 splash=silent quiet showopts snd-intel-dspcfg.dsp_driver=1
Mar 13 15:14:39 thinkpad kernel: hdaudio hdaudioC0D0: Unable to bind the codec
Mar 13 15:14:39 thinkpad kernel: hdaudio hdaudioC0D2: Unable to bind the codec
Mar 13 15:15:42 thinkpad plasmashell[2220]: org.kde.plasma: invalid metadata "/usr/lib64/qt5/plugins/k3blibsndfiledecoder.so"
Mar 13 15:28:28 thinkpad kernel: snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
Mar 13 15:28:28 thinkpad kernel: snd_hda_codec_realtek hdaudioC0D0: autoconfig for ALC257: line_outs=1 (0x14/0x0/0x0/0x0/0x0) type:speaker
Mar 13 15:28:28 thinkpad kernel: snd_hda_codec_realtek hdaudioC0D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
Mar 13 15:28:28 thinkpad kernel: snd_hda_codec_realtek hdaudioC0D0: hp_outs=1 (0x21/0x0/0x0/0x0/0x0)
Mar 13 15:28:28 thinkpad kernel: snd_hda_codec_realtek hdaudioC0D0: mono: mono_out=0x0
Mar 13 15:28:28 thinkpad kernel: snd_hda_codec_realtek hdaudioC0D0: inputs:
Mar 13 15:28:28 thinkpad kernel: snd_hda_codec_realtek hdaudioC0D0: Mic=0x19
Mar 13 15:28:28 thinkpad kernel: snd_hda_codec_realtek hdaudioC0D0: Internal Mic=0x12
Running `/usr/sbin/alsa-info.sh`right after booting generated this output:
http://alsa-project.org/db/?f=4a9de9...e7811571cc1973
Running it again after reconfiguring the sound card with Yast resulted in this output:
http://alsa-project.org/db/?f=3c9ab3...1834b0ebbc52a2
I'm running out of ideas where else to look.
(This problem survived several weeks and a lot of updates of many packages.)
Any help is appreciated!
Additional info:
- When booting the laptop connected to the USB-dock, the dock's sound device is recognized immediately.
- This "Dummy Audio Device" is shown within KDE no matter which user logs in after reboot
Even a newly created user doesn't see the internal sound device
This leads me to the conclusion, that it's a system wide configuration not being quite right.
Code:
cat /etc/modprobe.d/50-sound.conf
options snd slots=snd-hda-intel
# nS1_.hHmDP7YoWB0:Sunrise Point-LP HD Audio
alias snd-card-0 snd-hda-intel