I have a Windows 7 VM running a sound driver for a passthrough USB host device. The driver submits iso in and out urbs to do audio capture and playback at the same time.
Audacity running inside the guest freezes and does not record audio unless I move the mouse. Somehow it seems USB iso urbs aren't being pumped unless I keep moving the mouse. The VM is using VNC. Checking the QEMU stderr logs I see many occurrences of "husb: out of buffers for iso stream". Perhaps this message is enough to pinpoint the problem? Otherwise please let me know and I'll collect usbmon tcpdump or other debugging information. I am running qemu.git/master (bc4268998d154b9b3cc86a7b6bd932cc974591c9). Thanks, Stefan
