Ok, finally got the time. Attached is the output stream with some audible cracks, like explained above. Hope I did it right...
Not sure if the output of cat /sys/kernel/debug/usb/devices is of any interest, but here it is: T: Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 3 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 P: Vendor=0451 ProdID=8200 Rev= 1.60 S: Manufacturer=Lakewest Audio S: Product=Audiolab 8200 Series C:* #Ifs= 3 Cfg#= 1 Atr=c0 MxPwr= 0mA I:* If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhid E: Ad=82(I) Atr=03(Int.) MxPS= 1 Ivl=32ms I:* If#= 1 Alt= 0 #EPs= 1 Cls=01(audio) Sub=01 Prot=00 Driver=snd-usb-audio E: Ad=83(I) Atr=03(Int.) MxPS= 2 Ivl=32ms I:* If#= 2 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio I: If#= 2 Alt= 1 #EPs= 2 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio E: Ad=01(O) Atr=05(Isoc) MxPS= 582 Ivl=1ms E: Ad=81(I) Atr=11(Isoc) MxPS= 3 Ivl=1ms ** Attachment added: "output" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1136110/+attachment/4124889/+files/1.mon.out -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1136110 Title: USB Audio Codec choppy playback To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1136110/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
