Hello Richard, On Wed, Jul 02, 2025 at 10:54:28PM +0200, Richard wrote: > unbinding and binding does cause the device to disappear and reappear > as card0 in /sys/class/sound/, but nothing more as far as I can tell.
That might be a hint that userspace is also involved in the problem.
Does `aplay -l` still list the same devices as in the good state?
Does
systemctl soft-reboot
also cure the problem?
> cd -P /sys/devices/pci0000\:00/0000\:00\:08.1/0000\:c1\:00.3/driver
> echo 0000:c1:00.3 > unbind
> echo 0000:c1:00.3 > bind
>
> This in fact does seem to remove something higher up the chain, as it
> kills both keyboard and fingerprint sensor, which are both on bus 1,
> only keeping the touchpad operational, which doesn't seem to show up
> as a dedicated device on either lsusb or lspci. But even rebinding
> that driver doesn't allow for the audio module to come back up fully.
Yes, that removes the USB controller, so all devices plugged into that
disappear.
Best regards
Uwe
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