Hi Uwe,
On 30.07.25 11:39, Uwe Kleine-König wrote:
Hello Richard,
On Tue, Jul 22, 2025 at 08:01:11PM +0200, Richard wrote:
It now also happened on Debian. aplay -l and lsusb still showed the
expansion modue (I'm currently on kernel 6.15.7), systemctl
soft-reboot plus unplugging and replugging the module did indeed help,
audio worked again through it. Though soft-reboot was quite slow,
about as slow as a full reboot, though I'm not sure if it would also
take e.g. --force for a faster reboot.
Did you check after the soft-reboot and before replugging the hardware
if the software restart was enough to fix the issue? If yes that would
be a strong hint that this is a userspace issue.
I did check. Before the soft-reboot no audio device showed up, after the
soft-reboot only the AMD audio controller for the speakers. Only after
replugging the module it reappeared.
Just to recap on earlier mails: Replugging the hardware alone didn't
help.
Exactly, a soft-reboot plus replugging or a full reboot is required to show the
module again.
I wonder if in the broken state `aplay` is able to still playback
things. If that works that would be another indication that the
userspace software stack is involved.
I'll try that out the next time it happens. I've already prepared a wav audio
file that aplay can play back.
Best regards
Richard
