At Tue, 24 Feb 2015 20:11:58 +0000, Dang Sananikone wrote:

Thanks, in that case I'll simply attach the files to this post. There are two files:

• alsa-info-notworking.txt: This is the alsa info generated when

power-saving is enabled and after "speaker-test" has been invoked.

• alsa-info-working.txt: This is the alsa info generated when power-saving

is disabled and after "speaker-test" has been invoked.

To reproduce the problem:

Prerequisite: Set "options snd_hda_intel power_save=1"

Instructions:

1. Boot up laptop.
2. Insert headphone socket into jack.
3. In terminal, type "speaker-test -c 2".

Expected Result: The speaker-test program hangs, and the systemd journal starts filling up with "sound hdaudioC0D0: hda-codec: out of range cmd 0:1:716:ffffffff" messages.

OK, then try to pass power_save_controller=0 option to snd-hda-intel module. It might be that the controller gets screwed up by some reason by power-saving.

If this still doesn't help, we need more logs. Build the kernel with tracing support, and get the HD-audio verb traces as Documentation/sound/alsa/HD-Audio.txt, section Tracepoints.

Takashi