Description of my system: viewtopic.php?f=38&t=154642#p1011184
Same problem described back in 2012: viewtopic.php?f=38&t=15851#p180475
I found out what URB means from a description at http://www.makelinux.net/ldd3/chp-13-sect-3 :
The USB code in the Linux kernel communicates with all USB devices using something called a urb (USB request block).
but still I don't understand what all messages mean, is it a warning of some kind? I did find the Linux USB audio code below.
http://lxr.free-electrons.com/source/so ... cm.c#L1265
Code: Select all
/* Since a URB can handle only a single linear buffer, we must use double 1261 * buffering when the data to be transferred overflows the buffer boundary. 1262 * To avoid inconsistencies when updating hwptr_done, we use double buffering 1263 * for all URBs. 1264 */ 1265 static void retire_capture_urb(struct snd_usb_substream *subs, struct urb *urb)