On 2011-06-09 08:19, André Weidemann wrote: > Hi Gerd, > > On 08.06.2011 14:49, Gerd Hoffmann wrote: >> Hi, >> >>> The sound device shows up under Windows7 and drivers are installed >>> automatically. Unfortunately it does not work. All the players I tried, >>> did not even start playing the sound file, although they detected the >>> DirectSound Device. >> >> iso xfer's from usb-linux via ehci are flaky for reasons not yet tracked >> down. >> >> Any reason why you don't just plug in a virtual sound card? The HDA >> emulation should work fine with win7. > > Using the hda driver was my first attempt. But the result was not very > convincing. When playing mp3s inside the VM, I could hear music coming > from the speakers, but the sound was very choppy and too slow. It was no > joy listening to it. Does "export QEMU_AUDIO_DAC_TRY_POLL=0" before invoking qemu helps? It depends on your host-side interface. Using ALSA here, it is generally required. Note that this discussion rather belongs on qemu-devel. Jan
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