https://bugs.freedesktop.org/show_bug.cgi?id=86262
--- Comment #13 from Raymond <[email protected]> --- (In reply to David Mansfield from comment #2) > Created attachment 109438 [details] [review] > force tsched even in "BATCH" mode and on KVM. > > The attached patch fixes the problem by essentially reversing commit > 826c8f69d34ef49e86fe0ab6c93c1ffba8916131 (alsa: Disable timer-scheduling for > PCMs with the BATCH flag). > > Without tsched, the buffers are miniscule and we get overruns constantly. > With tsched (by design) the buffers are huge. > > Not sure what the implications are. > > NOTE: I also forced enablement of tsched on KVM. I'm having the exact same > problem in a VM, and it is MUCH better with the patch although still not > "glitch-free" which it is (with the patch) on bare-metal. > > NOTE: In kvm I am using USB passthrough, not emulated hardware audio device. http://cgit.freedesktop.org/pulseaudio/pulseaudio/commit/src/modules/alsa/alsa-sink.c?id=53b046d5c9593d848270e85017c2999a61256e0e the patch was designed for those emulated sound card inside vm , this mean that you have to differentiate usb passthrough and emulated sound card -- 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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