> From: Alan Stern > Sent: Friday, September 24, 2004 11:48 AM > > > What I am going to do is find *another* Red Hat Linux 9 > > machine in the building with different physical hardware > > and see if it exhibits the same problem. (I tried this > > experiment on another one of our test machines running > > same OS/hardware and got the same results.) > > That sounds like a good idea.
Tried it...same behavior. [shrugs] > From: Alan Stern > Sent: Friday, September 24, 2004 11:48 AM > > I notice that along with all the isochronous stuff, there was > a period-32 interrupt URB queued. Could this somehow be > responsible for the strange behavior? (Although if it were, > you'd expect the empty frames to occur exactly at intervals of 32.) I think that's the usbhid driver. I tried removing that driver and that URB when away. > From: Alan Stern > Sent: Friday, September 24, 2004 11:48 AM > > Another possibility is that some other program is trying to > query your device every 27-28 milliseconds. Something like > that might confuse the device enough to make it send an empty frame. I rebooted to single-user mode (2.6.9-rc2) and made sure the usbhid driver wasn't loaded. Same behavior (I checked the debug output and only my URBs were present). [shrugs] I guess I'll just need to track down another capture device that does coaxial S/PDIF and see if I have the same problem. (Note that I did try the optical S/PDIF input on this device and had the same behavior.) Paul Braman Paul<dot>Braman<at>NielsenMedia<dot>com Senior Engineer Engineering and Technology Nielsen Media Research ------------------------------------------------------- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
