Bug 199607 - Audio codec suspend causes humming sound with snd-hda-intel on NUC5i7RYB
Summary: Audio codec suspend causes humming sound with snd-hda-intel on NUC5i7RYB
Status: RESOLVED CODE_FIX
Alias: None
Product: Drivers
Classification: Unclassified
Component: Sound(ALSA) (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: Jaroslav Kysela
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2018-05-03 14:09 UTC by Viktor Ashirov
Modified: 2018-05-29 08:30 UTC (History)
2 users (show)

See Also:
Kernel Version: 4.16.6-300.fc28.x86_64
Tree: Mainline
Regression: No


Attachments
alsa-info.txt (41.34 KB, text/plain)
2018-05-03 14:09 UTC, Viktor Ashirov
Details

Description Viktor Ashirov 2018-05-03 14:09:38 UTC
Created attachment 275745 [details]
alsa-info.txt

Following the instructions from here:
https://bugzilla.redhat.com/show_bug.cgi?id=1533858#c1

alsa-info.txt is attached
Comment 1 Takashi Iwai 2018-05-03 14:29:17 UTC
What is the symptom?  Could you elaborate the problem in a bit more details?

Also, as a blind shot: try to turn off "Loopback Mixing" mixer element.  This is known to do harmful on many machines and is off as default.
Comment 2 Hans de Goede 2018-05-23 12:27:11 UTC
Viktor,

It would be good to get feedback from you on Takashi's question, so that we can add a fix for this to the mainline kernel.

Please boot without snd_hda_intel.power_save=0 added to your kernel commandline and then turn off the "Loopback Mixing" mixer element by running:

amixer -c0 set "Loopback Mixing" Disabled
amixer -c1 set "Loopback Mixing" Disabled

(one of these 2 might fail).

And then let us know if this fixes things, or if you still hear plops / a hiss.

Thanks & Regards,

Hans
Comment 3 Viktor Ashirov 2018-05-28 16:46:53 UTC
Hi,

I'm sorry for the delay.

The symptom looks like this: https://vashirov.fedorapeople.org/share/bz199607.webm

Disabling "Loopback Mixing" doesn't help. I also hear the same hiss sound at the system shutdown.

Thanks!
Comment 4 Hans de Goede 2018-05-29 08:30:08 UTC
(In reply to Viktor Ashirov from comment #3)
> Hi,
> 
> I'm sorry for the delay.
> 
> The symptom looks like this:
> https://vashirov.fedorapeople.org/share/bz199607.webm
> 
> Disabling "Loopback Mixing" doesn't help. I also hear the same hiss sound at
> the system shutdown.
> 
> Thanks!

Thank you for the info, the patch adding a quirk for your NUC has been merged now, closing.

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