On Mon, 5 Oct 2015, maillist@superlative.org wrote:
More follow up. I've upgraded the kernel to 4.0.0-040000-generic with no improvement. I've recompiled the usb sound modules with debug support and am getting the following. Note that I'm getting a probe failure with error code -5. Is there any reference anywhere for what these errors are?
-5 would be an ordinary -E<foo> error code, looking in /usr/include/asm-generic/errno-base.h (ultimately from the kernel's uapi/asm-generic/errno-base.h) it would seem to be EIO (I/O error). Note too informative, but at least it'll stem from some 'return -EIO' or similar somewhere in the code. Must be some underlying function that is having problems.
Oct 5 13:51:47 KAMDesktop kernel: [ 910.586812] snd-usb-audio: probe of 3-1:1.0 failed with error -5
/Ricard