I run Opensuse 13.2/64.
My audio system has been / is ALSA, not PulseAudio.
I have installed
rpm -qa | grep -i alsa alsa-utils-1.0.29-143.1.x86_64 alsa-plugins-jack-1.0.29-99.1.x86_64 alsa-firmware-1.0.29-33.1.noarch alsa-devel-1.0.29-218.1.x86_64 alsa-plugins-1.0.29-99.1.x86_64 alsa-1.0.29-218.1.x86_64 alsa-oss-1.0.28-51.1.x86_64 alsa-docs-1.0.29-218.1.noarch
It's run fine for ages. In the past week -- after a bunch of zypper (distro packages) upgrades, and no I don't know which one specifically -- I now have an audio problem.
When I boot my machine there's no audio output.
Every alsa/sound diagnostic I ran said everything's OK.
Took me awhile to figure out that simply UNPLUGGING the audio jack from the mobo socket, then replugging it in fixes the audio -- immediately.
Chatting in #irc, suggestion was to check kernel version dependency.
I'm currently on latest stable kernel 4.1.X.
uname -rm 4.1.1-1.ga46abf6-desktop x86_64
I am absolutely sure that this was NOT a problem in the 4.0.X kernel branch. I am pretty-darn-sure that this was NOT a problem in earlier 4.1.X branch.
Unfortunately, I only had access to
4.1.1-1.1.ga46abf6 4.1.0-3.g5ee367d
and
3.16.7-21.1.x86_64
no longer any earlier 4.1.X or 4.0.X kernels.
Testing each of those
4.1.1-1.1.ga46abf6 --> FAILs 4.1.0-3.g5ee367d --> FAILs 3.16.7-21.1.x86_64 --> WORKs
so at least from 3.16.7 -> 4.1.0 there's a kernel dependency. Again, I'm pretty certain that this was NOT a problem with earlier 4.1.X and 4.0.X kernels; just can't prove it.
As instructed in IRC, I DL'd and exec'd the 'alsa-info.sh' script.
I ran the script in 2 cases:
[1] boot to console, kernel 4.1.1-1.1.ga46abf6, no audio output [2] boot to console, kernel 4.1.1-1.1.ga46abf6, unplug & replug, OK audio output
First, the DIFF between the two shows there IS a change on UNPLUG/REPLUG of the jack,
DIFF: ------------------------------------------ --- alsa-info.txt.BEFORE 2015-07-05 12:32:44.973554471 -0700 +++ alsa-info.txt.AFTER 2015-07-05 12:34:01.935900433 -0700 @@ -3,7 +3,7 @@ !!ALSA Information Script v 0.4.64 !!################################
-!!Script ran on: Sun Jul 5 19:32:43 UTC 2015 +!!Script ran on: Sun Jul 5 19:34:00 UTC 2015
!!Linux Distribution @@ -332,7 +332,7 @@ Pin-ctls: 0x40: OUT Unsolicited: tag=01, enabled=1 Power states: D0 D1 D2 D3 - Power: setting=D3, actual=D3 + Power: setting=D0, actual=D0 Connection: 1 0x16 Node 0x1d [Pin Complex] wcaps 0x40058d: Stereo Amp-Out @@ -602,7 +602,7 @@ crw-rw---- 1 root audio 116, 6 Jul 5 12:31 /dev/snd/hwC0D0 crw-rw---- 1 root audio 116, 10 Jul 5 12:31 /dev/snd/hwC2D0 crw-rw---- 1 root audio 116, 4 Jul 5 12:31 /dev/snd/pcmC0D0c -crw-rw---- 1 root audio 116, 3 Jul 5 12:32 /dev/snd/pcmC0D0p +crw-rw---- 1 root audio 116, 3 Jul 5 12:33 /dev/snd/pcmC0D0p crw-rw---- 1 root audio 116, 5 Jul 5 12:31 /dev/snd/pcmC0D3p crw-rw---- 1 root audio 116, 12 Jul 5 12:31 /dev/snd/pcmC1D0c crw-rw---- 1 root audio 116, 8 Jul 5 12:31 /dev/snd/pcmC2D3p ------------------------------------------
Since the output's too big for the list, apparently, I pastebin'd the full script output
[1] -> http://pastebin.com/jUyTRrFG [2] -> http://pastebin.com/4V8YCguV
- Rob