At Mon, 2 Jun 2003 14:18:26 -0600, Ross Miller wrote: > > Also, the following lines are printed in the syslog: > May 24 23:28:17 snoopy kernel: usb-uhci.c: interrupt, status 2, frame# 985 > May 24 23:28:18 snoopy kernel: usb_control/bulk_msg: timeout > May 24 23:28:18 snoopy kernel: ALSA ../alsa-kernel/usb/usbaudio.c:1026: 5:1:2: > cannot get freq at ep 0x1 > > I looked at the source code, and line 1026 is in the init_usb_sample_rate > function. According to the comment, the calls are made > only if the devices has "sampling rate control" . I hacked that part out (so > that the function no longer tries to set the rate) and then the device played > just fine, at 24, 16 and 8 bits.
ok, i added a workaround code in usbaudio.c. > The only problem was that it spat out a > continuous stream of messages to the syslog. Here's a sample: > > May 24 23:44:32 snoopy last message repeated 3 times > May 24 23:44:32 snoopy kernel: usb.c: usb-check-bandwidth would have FAILED: > was 456, would be 913, bustime = 457 us > May 24 23:44:32 snoopy kernel: usb.c: usb-check-bandwidth would have FAILED: > was 799, would be 913, bustime = 114 us > May 24 23:44:32 snoopy last message repeated 3 times > May 24 23:44:33 snoopy kernel: usb.c: usb-check-bandwidth would have FAILED: > was 456, would be 913, bustime = 457 us > > These messages continue for as long as the sound is playing. a possible reason is that either we set up the interface correctly, or we pass too many packets for the requested status. i added nrpacks module option in usbaudio driver. please set nrpacks=2 to reduce the max number of URB packets. the changes were committed to cvs now, so please give a try. ciao, Takashi ------------------------------------------------------- This SF.net email is sponsored by: Etnus, makers of TotalView, The best thread debugger on the planet. Designed with thread debugging features you've never dreamed of, try TotalView 6 free at www.etnus.com. _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
