[alsa-devel] possible snd_hda_intel jack-sensing issue with device 8086:1c20

[Takashi Iwai]

At Tue, 11 Nov 2014 12:34:41 -0600,
Chris Pemberton wrote:
> 
> CentOS 7 x86_64
> Asus P8Z68-V motherboard
> Realtek ALC892
> Gnome 3 desktop
> nVidia GTX 770 with nVidia's driver
> 
> With BIOS set to HD for both rear and front jacks, I experience the problems I reported here:
> 
> https://bugs.freedesktop.org/show_bug.cgi?id=86158
> 
> Basically, sound works, but the selected output keeps auto-magically flipping from Analog-Out to Headphones and back so fast you barely hear a click..
> 
> Tried all sorts of snd_hda_intel module options and it didn't change.
> 
> Finally changed BIOS to set front jacks to AC97 (left rear jacks as HD) and sound works great... but no jack sensing occurs at all...
> 
> I can live without the jack sensing... but if anyone wants a stab at a fix, I'm game.
> 
> I've got the HDA Analyzer downloaded and running if that helps.
> 
> My device has id 8086:1c20
> 
> Perhaps similar to this bug that was brought to my attention?
> 
> https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/hda?id=1565cc358585be40608b46f18f7ac431a1aae2bc
> 
> Output of alsa-info.sh is here:
> 
> http://www.alsa-project.org/db/?f=8cf116b0bc230524bcfa7285b2adb698078d4224

Could you check the pin connection again?  The symptom appears more like
a hardware problem.


Takashi