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Re: [Qemu-devel] Help with deadlock when using sound

From: Paolo Bonzini
Subject: Re: [Qemu-devel] Help with deadlock when using sound
Date: Sun, 10 May 2015 17:55:48 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0

On 10/05/2015 16:54, Paolo Bonzini wrote:
> Reproduced with a FreeDOS image from QEMU Advent Calendar.  It locks up
> as soon as you type "beep".
> It works with the PulseAudio and ALSA backends, but it doesn't with the
> SDL backend, even on Linux.
> Also, it deadlocks even with KVM enabled.

Hmm, looks like SDL audio is broken; it's not pcspk's fault.
I get an instant deadlock from

QEMU_AUDIO_DRV=sdl qemu-system-x86_64 -soundhw gus /mnt/vm/freedos.raw

even if I add "-display sdl", "-monitor stdio", etc.


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