With mainline kernel build "Linux version 4.4.0-040400rc7-generic (kernel@tangerine) (gcc version 5.2.1 20151010 (Ubuntu 5.2.1-22ubuntu2) ) #201512272230 SMP Mon Dec 28 03:32:16 UTC 2015" (http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4-rc7-wily), the issue seems to be resolved. No hangs, crashes, glitches, or anything out of the ordinary has occurred on this kernel for about an hour now.
With mainline kernel build "Linux version 4.4.0-040400rc7 -generic (kernel@tangerine) (gcc version 5.2.1 20151010 (Ubuntu 5.2.1-22ubuntu2) ) #201512272230 SMP Mon Dec 28 03:32:16 UTC 2015" (http:// kernel. ubuntu. com/~kernel- ppa/mainline/ v4.4-rc7- wily), the issue seems to be resolved. No hangs, crashes, glitches, or anything out of the ordinary has occurred on this kernel for about an hour now.