> The qemu monitor prints "alsa: Unexpected state 1" in a tight busy
> loop when running kvm with "-soundhw ac97". This loop consumes so
> much CPU that it slows down the virtual machine, and the large 
> number of error messages makes the monitor useless.


I'm experiencing a variant on this, with qemu-kvm in Squeeze, that may
or may not be related.  Instead of the messages spewing through the
monitor, they're going to stderr;  the CPU is pegged as long as sound
output is enabled.

I'm able to reproduce using pretty much anything in the VM.  Lenny,
Windows.. It behaves differently on each operating system, and sometimes
depends on when or if sound is actually produced.  I can run down some
specifics on each if it would help.

It seems to be happening with the newer version of kvm that just came
down into squeeze (0.12.5+dfsg-1) as well as qemu invoked with
-enable-kvm.  The messages stop with the new version but the CPU is
still pegged.

Here's how I invoke my lenny machine:

--
#!/bin/bash

export QEMU_AUDIO_DRV=oss

kvm -m 768 -vga cirrus -soundhw ac97 -net nic,model=ne2k_pci -net user
-hda debian-secondary.img -cdrom 1.iso -boot c
--

Setting QEMU_AUDIO_DRV to oss, everything behaves very well.



Chance



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