Description of problem:
I have seen this problem since F11, but it's just an annoyance so I didn't want to let it get in the way of the other, more important nouveau fixes.
In almost all cases when DPMS Standby is entered on this laptop while audio is active, there is some stutter & repetition of the last few seconds of the audio material. Sounds like interrupts are blocked for a longer time or in such a way that pulseaudio gets confused. I have also sometimes encountered the situation that pulseaudio became completely confuse if this DPMS standby interruption happened repeatedly.
I usually circumvent it by disabling DPMS when I want to listen to the music player for a longer time.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. start music playback
2. wait for DPMS standby to be activated
00:1b.0 Audio device : Intel Corporation 82801I (ICH9 Family) HD Audio Controller [8086:293e] (rev 03)
01:00.0 VGA compatible controller : nVidia Corporation G94 [GeForce 9800M GTS] [10de:062c] (rev a1)
Audio output is via SPDIF
Created attachment 413470 [details]
Created attachment 413471 [details]
X server logfile
That's a rather odd issue, and I have no idea what could cause it. On that chipset, all nouveau does on DPMS standby is switch the output off and return.
Yes it's odd and I have only noticed it on this HW, so I was assuming this is nouveau related. But now I did the following test:
$ while true; do xset dpms force standby; sleep 2; xset dpms force on; sleep 1; done
Test with SPDIF output via ALSA device:
$ mplayer -ao alsa:device=iec958 <some audio file>
AO: [alsa] 44100Hz 2ch s16le (2 bytes per sample)
-> no audio stutter
Test with default device, i.e. pulseaudio:
$ mplayer <some audio file>
AO: [pulse] 44100Hz 2ch s16le (2 bytes per sample)
-> audio stutter/repetitions (same kind I noticed with amarok)
This seems to be a pulseaudio issue. I'll re-assign it.
Retested with F14Beta. Problem still exists.
Retested with F15Beta. Problem still exists.
Retested with F16. Problem still exists.
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