Dear list members, After upgrading to kernel 5.10.16, my sound card (HDA Intel PCH Realtek ALC892) stopped sending output to speakers and headphones. Audio files seemed to play.
By downgrading to my latest kernel 5.9.10, sound output worked fine. In both kernel versions, alsa package versions where the same. Also, the card driver snd_hda_intel was installed.
Could you, please, share a couple of ideas on where to search for a solution? Thank you
On 2021-02-28 12:06:15 (+0200), tasos tsesmetzis via arch-proaudio wrote:
Dear list members, After upgrading to kernel 5.10.16, my sound card (HDA Intel PCH Realtek ALC892) stopped sending output to speakers and headphones. Audio files seemed to play.
By downgrading to my latest kernel 5.9.10, sound output worked fine. In both kernel versions, alsa package versions where the same. Also, the card driver snd_hda_intel was installed.
Could you, please, share a couple of ideas on where to search for a solution? Thank you
Hi Tasos,
are there error messages in your kernel log from that boot (`systemctl -k -b`)? Does alsamixer show the devices? Are channels maybe muted?
What does `aplay -l` show on each kernel?
How do you playback files?
Do you use pulseaudio? If so, what does `pactl list short` show on each kernel?
Do you use JACK? If so, how do you start it and is it started on the correct device?
Best, David
@David Runge: Many thanks for your reply.
Kernel log messages include no errors in v5.10.16. On the other hand there are no muted output channels in alsamixer. Also, the correct device is selected.
The output of 'aplay -l' is identical in both kernel versions. To playback files, aplay and audacity where used. JACK is started either with the default device ('jackd -d alsa'), or by selecting hw:0 ('jackd -d alsa -d hw:0') but with no success.
Regards, Tasos
Στις Κυρ, 28 Φεβ 2021 στις 2:27 μ.μ., ο/η David Runge dave@sleepmap.de έγραψε:
On 2021-02-28 12:06:15 (+0200), tasos tsesmetzis via arch-proaudio wrote:
Dear list members, After upgrading to kernel 5.10.16, my sound card (HDA Intel PCH Realtek ALC892) stopped sending output to speakers and headphones. Audio files seemed to play.
By downgrading to my latest kernel 5.9.10, sound output worked fine. In both kernel versions, alsa package versions where the same. Also, the
card
driver snd_hda_intel was installed.
Could you, please, share a couple of ideas on where to search for a solution? Thank you
Hi Tasos,
are there error messages in your kernel log from that boot (`systemctl -k -b`)? Does alsamixer show the devices? Are channels maybe muted?
What does `aplay -l` show on each kernel?
How do you playback files?
Do you use pulseaudio? If so, what does `pactl list short` show on each kernel?
Do you use JACK? If so, how do you start it and is it started on the correct device?
Best, David
On 2021-02-28 21:00:52 (+0200), tasos tsesmetzis wrote:
@David Runge: Many thanks for your reply.
Kernel log messages include no errors in v5.10.16. On the other hand there are no muted output channels in alsamixer. Also, the correct device is selected.
The output of 'aplay -l' is identical in both kernel versions. To playback files, aplay and audacity where used. JACK is started either with the default device ('jackd -d alsa'), or by selecting hw:0 ('jackd -d alsa -d hw:0') but with no success.
That is odd. Maybe a regression in the alsa modules. You could try getting some more information out of the alsa upstream (e.g. [1] or [2]).
Other than that: I hope to upgrade the kernel to > 5.11 soon. Maybe that will fix your issues. You may of course also try linux-rt-lts.
Best, David
[1] https://alsa-project.org/wiki/Mailing-lists [2] https://github.com/alsa-project/alsa-lib
@ David Runge: Useful links. Many thanks for your time! Best regards Tasos
Στις Δευ, 1 Μαρ 2021, 11:47 ο χρήστης David Runge dave@sleepmap.de έγραψε:
On 2021-02-28 21:00:52 (+0200), tasos tsesmetzis wrote:
@David Runge: Many thanks for your reply.
Kernel log messages include no errors in v5.10.16. On the other hand
there
are no muted output channels in alsamixer. Also, the correct device is selected.
The output of 'aplay -l' is identical in both kernel versions. To
playback
files, aplay and audacity where used. JACK is started either with the default device ('jackd -d alsa'), or by selecting hw:0 ('jackd -d alsa -d hw:0') but with no success.
That is odd. Maybe a regression in the alsa modules. You could try getting some more information out of the alsa upstream (e.g. [1] or [2]).
Other than that: I hope to upgrade the kernel to > 5.11 soon. Maybe that will fix your issues. You may of course also try linux-rt-lts.
Best, David
[1] https://alsa-project.org/wiki/Mailing-lists [2] https://github.com/alsa-project/alsa-lib
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