2010/1/20 Jaroslav Kysela perex@perex.cz
On Wed, 20 Jan 2010, Raymond Yau wrote:
2010/1/13 Jaroslav Kysela perex@perex.cz
On Wed, 13 Jan 2010, Raymond Yau wrote:
2010/1/11 Jaroslav Kysela perex@perex.cz
On Mon, 11 Jan 2010, Raymond Yau wrote:
2010/1/7 Jaroslav Kysela perex@perex.cz
On Wed, 6 Jan 2010, pl bossart wrote:
> > > The improved and more clean fix in now in my tree: > > > > > > http://git.alsa-project.org/?p=alsa-kernel.git;a=commitdiff;h=1250932e48d3b6... > > Note that you should apply these 4 patches (in reverse order): > > 4: ALSA: pcm_lib - optimize wake_up() calls for PCM I/O > 3: ALSA: pcm_lib - cleanup & merge hw_ptr update functions > 2: ALSA: pcm_lib - add possibility to log last 10 DMA ring buffer > positions > 1: ALSA: pcm_lib.c - convert second xrun_debug() parameter to use > defines > > Patch #3 should definitely fix problems with large avail or delay > values > reported in PA. I finally figured the culprit (and decide to cleanup > all > relevant code rather do just another workaround). In other words, new > hw_ptr pointer should never be less than previous one now. > > Jaroslav > > - > > > using alsa-driver-1.0.22.1.1.g231e3.14.g812cb and Fedora 12 inside > Virtual Box
aplay -D plughw:0,0 /usr/share/sounds/alsa/*.wav
"Front Left" sound as "Front Front Left" when playing "Front_left.wav"
only when echo 4 > /proc/asound/card0/pcm0p/xrun_debug
Thanks for testing.
It means that with other values is no sound generated?
Could you use value 29 for xrun_debug and report all sound related messages from dmesg output after playback of "Front_left.wav"?
Jaroslav
do you mean 27 instead of 29 since the echo only occur when the value contain XRUN_DEBUG_JIFFIESCHECK bit ?
aplay -Dplughw:0,0 and mplayer -ao alsa:device=hw=0,0 work normal
except when the value of xrun_debug contain XRUN_DEBUG_JIFFIESCHECK bit ( same result for the three virtual box audio backend oss, pulseaudio and alsa )
Ok, I understand now. It would be better to use value 101 then - to see last 10 ring buffer positions when jiffies correction occurs. Also, get latest snapshot - there is a fix for jiffies check. Thanks.
Jaroslavalsa-driver-1.0.22.1.1.g231e3.61.g42efb
copying file alsa/kernel/core/sound.c patchfile file sound.c Hunk# 12 FAILED at 518 1 out of 12 hunks FAILED -- saving rejects to file sound.c.rej
seem related to
http://git.alsa-project.org/?p=alsa-kernel.git;a=commit;h=8a822c23333694e7d1...
The problem should be fixed now. Thanks for the notice.
Jaroslav
alsa-lib/test/pcm --verbose -Dhw -c2 -r48000 -f440 --method write_and_poll
How do I know the double wake up is fixed ?
do it mean that fixing this bug will fix the pulseaudio problem ?
do I need to test with other format , rate, channel, and sine wave frequency ?
the echo still exist only XRUN_DEBUG_JIFFIESCHECK bit is set