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. Paolo