Interesting thread. Just stumbled upon it because I’m desperately looking for a solution for various problems. I think my system started to get very unstable after the big update announced Mid-October. The graphics problem somehow could be solved quickly. What I never could solve was, that Skypeforlinux from that update on did not work anymore. It always crashes on login. Furthermore my system also hangs once in a while, mostly when the memory is used up and the system starts swapping. Already tried various changes to settings in this respect without any progress. See suggestions here: https://is.gd/wJrcdx
Apart from that I get loads of error messages regarding my camera. Sometime my system dos not start up nor shut down due to them. Did a little research into that and found this thread: https://askubuntu.com/questions/353533/webcam-not-working-in-13-04. It somehow suggests, that Skype might fail due to the problem with the camera. And that there is a problem with the camera proves
[knut@chakra-pc ~]$ dmesg | grep uvcvideo | less [ 1123.394002] uvcvideo: Failed to query (129) UVC probe control : -71 (exp. 26). [ 1123.394006] uvcvideo: Failed to initialize the device (-5). [ 1124.037765] uvcvideo: Found UVC 1.00 device HD WebCam (1bcf:2c32) [ 1124.046252] uvcvideo: UVC non compliance - GET_DEF(PROBE) not supported. Enabling workaround. [ 1124.050509] uvcvideo: Failed to query (129) UVC probe control : -71 (exp. 26). [ 1124.050515] uvcvideo: Failed to initialize the device (-5). [ 1124.683385] uvcvideo: Found UVC 1.00 device HD WebCam (1bcf:2c32) [ 1124.692008] uvcvideo 1-1.1:1.0: Entity type for entity Extension 4 was not initialized! [ 1124.692012] uvcvideo 1-1.1:1.0: Entity type for entity Extension 3 was not initialized! [ 1124.692013] uvcvideo 1-1.1:1.0: Entity type for entity Processing 2 was not initialized! [ 1124.692015] uvcvideo 1-1.1:1.0: Entity type for entity Camera 1 was not initialized! [ 1125.792125] uvcvideo: Found UVC 1.00 device HD WebCam (1bcf:2c32) [ 1125.800619] uvcvideo: UVC non compliance - GET_DEF(PROBE) not supported. Enabling workaround.
I only pasted a few of the hundreds of lines my log gets filled up with.
My question now is, what had changed under the hood that a stable system is rendered almost unusable? In the announcement for the update only manual intervention for mesa and graphics are mentioned (Upgrades for xorg, kernel and graphics drivers include important changes and might require manual intervention). Might the kernel be the culprit? BTW, my system is also Intel based.
Would be grateful about any hint that make my system return to normal.
Okay, installed LTS kernel and at least the error messages with regard to uvcvideo are gone. Skypeforlinux does not work yet, but the freezes when swapping are gone too.
Only drawback, the graphics system seems to be unstable again. The window system crashed after the first boot into LTS and rendered the system almost irresponsible. After reboot everything seems to work fine. Will have an eye on that anyway. But honestly, I would prefer to get the new kernel working instead of getting stuck with the old stuff. Any ideas?