Hello

Headset: Plantronics DSP 400 (047f:0ca1) Distro: Ubuntu 8.04 output from tsalsa script (from #alsa) : http://nopaste.com/p/a8yymxldp

Problemdescription: After some time(~0.5-1.5 hours) listening to music my headset suddenly stops playing. If I try:

When the headset crashes dmesg says ALSA /usr/src/modules/alsa-driver/usb/usbaudio.c:943: timeout: still 3 active urbs... at the beginning the number of urbs were 4 but I blacklisted the usbhid module (my headset has a volumecontrol) since then it hangs by 3. /etc/init.d/alsa-utils stop cardid I get the message "amixer: Mixer hw:1 load error: Invalid argument" I also downloaded alsa-source (from the reposity)and built the alsa-driver. Because

when I try sudo alsa force-unload or modprobe -r modprobe hangs and I can't Terminate it.

When the headset crashes dmesg says ALSA /usr/src/modules/alsa-driver/usb/usbaudio.c:943: timeout: still 3 active urbs... at the beginning the number of urbs were 4 but I blacklisted the usbhid module (my headset has a volumecontrol) since then it hangs by 3.

So the only thing what I can do is reboot to get it working again. It's really annoying. I first asked at #also for help but they couldn't help (except that it's maybe somehow related to the usb subsystem) me but gave me the advice to post my problem here.

Thanks

Anselm