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Bug#851404: Internal speakers don't work after standby on a Toshiba z20t-c-121



Control: tag -1 + moreinfo

On Sun, Jun 29, 2025 at 01:16:24PM +0200, Michael Fritscher wrote:
> the bug still exists on current trixie, kernel version
> 
> > 6.12.33+deb13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.33-1 (2025-06-19)
> x86_64 GNU/Linux

To triage the problem, can you try if reloading the driver works?

The exact commands to do that differ a bit, on my system this works as
follows:

 /root# cd -P /sys/class/sound/card0/device/driver

 /sys/bus/pci/drivers/snd_hda_intel# ls
 0000:00:1f.3  bind  module  new_id  remove_id  uevent  unbind

 /sys/bus/pci/drivers/snd_hda_intel# echo 0000:00:1f.3 > unbind
 /sys/bus/pci/drivers/snd_hda_intel# echo 0000:00:1f.3 > bind

Maybe this is enough for you to see how it works on your system. If not
please ask back.

Does audio work after reloading the driver on a system that wasn't
suspended before?

Does reloading the driver make audio work again after a suspend?

Does audio also break if you do:

	unbind
	suspend
	resume
	bind

?

Is your driver also snd_hda_intel?

Best regards
Uwe

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