[pulseaudio-tickets] [Bug 87713] "Transistor" game makes every client playing at double speed

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87713

--- Comment #4 from Raymond <superquad.vortex2 at gmail.com> ---
how about

aplay -D surround40:CARD=CA0106  --dump-hw-params any.wav


aplay -D surround51:CARD=CA0106  --dump-hw-params any.wav

pulseaudio does not support SND_PCM_ACCESS_MMAP_COMPLEX and fallback to use
SND_PCM_ACCESS_RW_INTERLEAVED

this force pulseaudio to use irq polling instead of timer scheduling 
for those surround devices

http://cgit.freedesktop.org/pulseaudio/pulseaudio/commit/src/modules/alsa-util.c?id=045c1d602dcba57868845ba3270510593c39480f

+    if (!_use_mmap)
+        _use_tsched = FALSE;
+



your log did not contain the probing of your ca0106 and those errors

alsa-lib)pcm_hw.c: SNDRV_PCM_IOCTL_START failed (-77)

and

pulseaudio] (alsa-lib)setup.c: Cannot lock ctl elem



http://lists.freedesktop.org/archives/pulseaudio-discuss/2014-November/022670.html

https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1315212

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