Fwd: regression: from 3.8 to 3.9: headphones output no sound on Intel HDA, codec VIA VT1802

Fwd: regression: from 3.8 to 3.9: headphones output no sound on Intel HDA, codec VIA VT1802

[Alex Riesen]

The original message is being held hostage by moderator approval.
The attachments (alsa-info output) can be found here:

  http://marc.info/?l=linux-kernel&m=136835246706699&w=2

---------- Forwarded message ----------

Hi,

I just noticed (use the headphones rarely) that the headphones on this
System76 Lemur Ultra (lemu4) stopped working. There is absolutely no
output.

I tried reverting all changes to patch_via.c since v3.8, and
have the sound back, but there wasn't much to revert:

Revert "ALSA: hda - Rearrange INPUT_PIN_ATTR_*"
Revert "ALSA: hda - Use generic parser for VIA codec driver"
Revert "ALSA: hda - Enable parsing the independent HP mode as default
for VIA codecs"
Revert "ALSA: hda/via - Fix wrong checks of power state bits"
Revert "ALSA: hda - Fix phantom jacks on VT1708"
Revert "ALSA: hda - detect jacks on VT1708 even when no streams are active"
Revert "ALSA: hda - Use generic array for loopback list management"

and one change (which I indeed suspect) is large: the use of generic parser.

The problem is also present in 3.10-rc1. The output of alsa-info.sh attached,
for 3.8.12 and 3.9.2 respectively.

Regards,
Alex Riesen

Fwd: regression: from 3.8 to 3.9: headphones output no sound on Intel HDA, codec VIA VT1802

[Evan]

I am having this same issue (with the same hardware). I found a
temporary work around for the problem by disabling "Auto-Mute Mode" with
alsamixer and then muting my "Speaker" output. If I don't mute the
"Speaker" I get audio through both my headphones and my speakers, but
when I mute the speakers I get the audio just through the headphones.

The output of alsa-info for 3.9.4 is here[1].

[1]
http://www.alsa-project.org/db/?f=6120303f74b8e46930e15a544ba11b859de25c04

-E

Re: Fwd: regression: from 3.8 to 3.9: headphones output no sound on Intel HDA, codec VIA VT1802

[Alex Riesen]

On Fri, May 31, 2013 at 1:07 PM, Evan <sirevan@gmail.com> wrote:
> I am having this same issue (with the same hardware). I found a
> temporary work around for the problem by disabling "Auto-Mute Mode" with
> alsamixer and then muting my "Speaker" output. If I don't mute the
> "Speaker" I get audio through both my headphones and my speakers, but
> when I mute the speakers I get the audio just through the headphones.

Didn't work for me on pure 3.9.2.