Nixpkgs: Headphone audio doesn't work anymore

[domenkozar]

I have rebooted my machine yesterday and headphones stopped working on NixOS 17.09.

cc @fpletz @grahamc who confirm the same issue started about 1-2 weeks ago.

[domenkozar]

Kernel 4.14.15 and 4.9.78 both have the same issue.

[domenkozar]

With help of @cillianderoiste and comments in https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1575078 I was able to fix it with a suspend (actually hibernate).

One fixes windows with a reboot
One fixes linux with suspend

WE ARE SO AGILE

[fpletz]

Oh, I though you meant bluetooth headphones. I actually have a problem with bluetooth audio, not with headphones connected via the headphone jack. Great. \o/

[vcunat]

Once upon a long time, some audio level gets zeroed for me mysteriously, resulting into no sound, but I could always just find the muted channel in audio mixer. (Completely unrelated to your issues, possibly.)

[chris-martin]

My headphone audio just stopped working after a reboot in 18.03.

I couldn't test the suspend workaround, because my machine didn't recover from the suspend.

[chris-martin]

Removed boot.kernelPackages = pkgs.linuxPackages_latest; from my config and rebooted, now I'm working again.

[polynomial]

my headphone audio broke between 18.03.git.e860b65 (Impala) and 18.03.132217.c56ebaba1b0 (Impala).

I checked the volume levels (although they are getting set to zero on boot now, oddly). I also changed from the 4.14.38 kernel and tried 4.9:
boot.kernelPackages = pkgs.linuxPackages_4_9;

but it still doesn't work:
working (18.03 pre): Linux bsmith-desktop 4.9.80 #1-NixOS SMP Sat Feb 3 16:05:43 UTC 2018 x86_64 GNU/Linux broken: Linux bsmith-desktop 4.9.97 #1-NixOS SMP Sun Apr 29 09:32:03 UTC 2018 x86_64 GNU/Linux

I checked lspci and all the devices still seem to show up too.

[tuxinaut]

I had the same problem yesterday.

This simple command helped in the end ...

$ alsactl restore

[stale[bot]]

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