** Tags added: windows
--
sound broken in qemu 0.12.x
https://bugs.launchpad.net/bugs/510612
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
Status in QEMU: New
Bug description:
In qemu 0.12.x there is a jitter when sound is played by guest Windows XP SP2.
Also there are warnings on console:
alsa: Unexpected state 1
alsa: Unexpected state 1
and qemu tries to eat 100% cpu. According to strace it polls alsa device
continuously:
futex(0x849e60, FUTEX_WAKE_PRIVATE, 1) = 1
select(23, [6 10 12 20 22], [18], [], {1, 0}) = 1 (out [18], left {0, 999997})
poll([{fd=18, events=POLLOUT|POLLERR|POLLNVAL}], 1, 0) = 1 ([{fd=18,
revents=POLLOUT|POLLERR}])
write(2, "alsa: "..., 6) = 6
write(2, "Unexpected state 1\n"..., 19) = 19
The bug appears with ac97 and es1370 guest sound devices (i didn't test others).
With OSS host sound driver there are no warnings and consumption of cpu by qemu
is normal, but jitter in the sound is still there.
