Hi Jürgen, On Monday 12 August 2013 07:33:03 Jürgen Liebmann wrote: > [1] > 045e:0721 Microsoft LifeCam NX-3000 not detected > > [2] > Since upgrate from quantal to raring I have the a problem with the webcam > "Microsoft LifeCam NX-3000". The webcam doesn't work. > > The last good kernel is 3.8.0-15.25, while the bug first appears with kernel > 3.8.0-16.26. > > In /var/log/syslog I can see: > May 3 07:46:44 master kernel: [ 61.441466] uvcvideo: Found UVC 1.00 device > Microsoft LifeCam NX-3000 (045e:0721) > May 3 07:46:44 master kernel: [ 61.441923] uvcvideo: UVC non compliance - > GET_DEF(PROBE) not supported. Enabling workaround. > May 3 07:46:44 master kernel: [ 61.442272] uvcvideo: Failed to query (129) > UVC probe control : -32 (exp. 26). > May 3 07:46:44 master kernel: [ 61.442275] uvcvideo: Failed to initialize > the device (-5). > May 3 07:46:44 master kernel: [ 61.442350] usbcore: registered new interface > driver uvcvideo > May 3 07:46:44 master kernel: [ 61.442352] USB Video Class driver (1.1.1) > > The kernel is the actual kernel of raring (3.8.0-19-generic, package linux - > 3.8.0-19.30). > > But when I boot raring with kernel 3.5.0-27 (last kernel from quantal) the > webcam it works fine: > > May 3 07:39:36 master kernel: [ 370.964836] uvcvideo: Found UVC 1.00 device > Microsoft LifeCam NX-3000 (045e:0721) > May 3 07:39:36 master kernel: [ 370.965309] uvcvideo: UVC non compliance - > GET_DEF(PROBE) not supported. Enabling workaround. > May 3 07:39:36 master kernel: [ 370.966042] input: Microsoft LifeCam NX-3000 > as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.0/input/input15 > May 3 07:39:36 master kernel: [ 370.966208] usbcore: registered new > interface driver uvcvideo > May 3 07:39:36 master kernel: [ 370.966212] USB Video Class driver (1.1.1) > > It's probably the same problem as bug #1168430 ? > > Link to Launchpad bug report: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1176126 >From the bug report it seems you've bisected the problem and reached the following offending commit (great work by the way, thank you for your patience and help): [74a6af256b4816bf95ca59323dc06b8001673a43] "USB: EHCI: work around silicon bug in Intel's EHCI controllers" I've CC'ed Alan Stern, the author of the commit. Alan, would you be able to help Jürgen ? -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
