[alsa-devel] [CX2075] No sound after suspend/resume from front speaker

[Takashi Iwai]

On Sat, 25 Jan 2020 23:30:32 +0100,
Roman Šmakal wrote:
> 
> Hi,
> 
> this still seem to be an issue. After startup everything works well until the 
> laptop goes to suspend.
> 
> Tried pretty much everything basic user can do (unmutes, rmmods and so on), 
> still no way to wake the output. ALSA seems to be thinking, that output is 
> active, you can set volume and stuff, but nothing happens.
> 
> ALSA info:
> http://alsa-project.org/db/?f=9d1ee81fe037acb53ca381f2de27be420f83a373
> 
> Related links:
> https://www.reddit.com/r/archlinux/comments/4nwzua/
> no_sound_after_suspend_killing_or_restarting/
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1612916
> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=851404

The first thing to check is to compare alsa-info.sh outputs before and
after the suspend.

Also pass snd_hda_codec.dump_coef=1 module option to enable the COEF
dump.  This will give more information in alsa-info.sh outputs.


Takashi