Installed kernel 3.13.1 on my main system, and found a better version of the NVIDIA patch for driver 331.38 here: http://cvs.rpmfusion.org/viewvc/rpms/nvidia-kmod/devel/nvidia_3.13_kernel.patch?revision=1.3&root=nonfree&view=markup

Video playback – especially on kaffeine – is better, but I am still getting problems with uvcvideo and usb audio etc:

.......
[  841.265226] uvcvideo: Found UVC 1.00 device VF0700 Live! Cam Chat HD (041e:4088)
[  841.266633] input: VF0700 Live! Cam Chat HD as /devices/pci0000:00/0000:00:1a.7/usb9/9-2/9-2.7/9-2.7:1.0/input/input11
[  841.472401] usb_audio: Warning! Unlikely big volume range (=5632), cval->res is probably wrong.
[  841.472404] usb_audio: [2] FU [Mic Capture Volume] ch = 1, val = -5632/0/1
[  868.902325] cannot submit urb 0, error -28: not enough bandwidth
[  962.823040] ------------[ cut here ]------------
[  962.823051] WARNING: CPU: 3 PID: 5923 at fs/sysfs/group.c:214 sysfs_remove_groups+0x2b/0x40()
[  962.823052] sysfs group ffffffff81559520 not found for kobject 'input9'
.  etc....

And the NVIDIA driver segfaults:

(EE) Backtrace:
(EE) 0: /usr/bin/X (OsLookupColor+0x129) [0x473899]
(EE) 1: /lib64/libpthread.so.0 (__restore_rt+0x0) [0x3cd640f74f]
(EE) 2: /lib64/libc.so.6 (malloc_usable_size+0x26) [0x3cd5c80c46]
(EE) 3: /lib64/libGL.so.1 (glXCreateNewContext+0x31744) [0x341c0e5c48]
(EE)
(EE) Segmentation fault at address 0x0
(EE)
Fatal server error:
(EE) Caught signal 11 (Segmentation fault). Server aborting

I installed Kernel 3.13.1 on a non-NVIDIA test system (with the standard kernel.org drivers) and there appeared to be no problems:

[   34.550537] uvcvideo: Found UVC 1.00 device VF0700 Live! Cam Chat HD (041e:4088)
[   34.551973] input: VF0700 Live! Cam Chat HD as /devices/pci0000:00/0000:00:1d.7/usb8/8-1/8-1:1.0/input/input17
[   35.245887] ALSA sound/usb/mixer.c:1303 usb_audio: Warning! Unlikely big volume range (=5632), cval->res is probably wrong.
[   35.245890] ALSA sound/usb/mixer.c:1307 usb_audio: [2] FU [Mic Capture Volume] ch = 1, val = -5632/0/1
[   35.246033] usbcore: registered new interface driver snd-usb-audio

So..  I am staying with Kernel 3.12.9 on my main system, for the time being…    Hopefully NVIDIA will release a driver with full 3.13 support soon…

Robert Gadsdon.   January 30, 2014