On Wed, 13 Jan 2010, Raymond Yau wrote: > 2010/1/11 Jaroslav Kysela <perex@xxxxxxxx> > >> On Mon, 11 Jan 2010, Raymond Yau wrote: >> >> 2010/1/7 Jaroslav Kysela <perex@xxxxxxxx> >>> >>> 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=1250932e48d3b698415b1f04775433cf1da688d6 >>>> >>>> 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. Jaroslav ----- Jaroslav Kysela <perex@xxxxxxxx> Linux Kernel Sound Maintainer ALSA Project, Red Hat, Inc. _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
