https://bugs.freedesktop.org/show_bug.cgi?id=87713
--- Comment #4 from Raymond <[email protected]> --- 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 -- You are receiving this mail because: You are the QA Contact for the bug. You are the assignee for the bug.
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