Video freezing after activating XScreensaver

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This is an issue that has been ongoing for over 1 1/2 years now. I have
tried kernel after kernel and whether it's a Ubuntu kernel such as the
one in my sig or a kernel from here -
http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-next/ the video
will intermittently freeze. Running XScreensaver causes it to freeze
when switching between the different screen savers showing a black
screen and the mouse cursor. The cursor can be moved and will switch
between the arrow and the hand tool if hovering over a clickable area on
the desktop even though it can't be seen. Giving an error output in my
syslog of 

kernel: [578631.820045] [drm:i915_hangcheck_elapsed [i915]] *ERROR*
Hangcheck timer elapsed... render ring idle

I was able to reproduce this yesterday by starting XScreensaver at
9:43am and at 13:44pm the video froze giving the above error. At other
times when XScreensaver is not running the video will still randomly
freeze however there is no specific time frame for this to happen. I've
seen it go 2 days then freeze and have also seen it go 16 days then
freeze. As I've said previously all background operations continue to
run as just the video is frozen.

I have had the random freeze happen when running this kernelkernel
4.0.0-997-generic #201503310205 SMP Tue Mar
31 02:07:04 UTC 2015 which Chris Wilson from this list had me run kernel
kernel 4.0.0-997-generic #201503310205 SMP Tue Mar
31 02:07:04 UTC 2015 however when I attempted to file a bug report at
Ubuntu Launchpad it was not accepted so the Ubuntu kernel folks had me
switch to kernel 4.2.3-040203-generic #201510030832 SMP Sat Oct 3
12:34:31 UTC 2015 which although is an upstream kernel is what they
wanted me to run. The bug report that I've filed on Launchpad is
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1497627 

I've attempted to boot into the following Ubuntu upstream kernels:

v4.3-rc5-unstable - Boot process would begin but would not complete
v4.3-rc4-unstable - same as above
v4.3-rc3-unstable - same as above
v4.3-rc2-unstable - Same as above
v4.3-rc1-unstable - Same as above

I also attempted last night to boot into

v4.3-rc5-unstable from
http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D which gave the
same results. The boot process would begin but then go to just a black
screen without completing. 

I have either filed or commented on the following bugs also:

https://bugs.freedesktop.org/show_bug.cgi?id=75394
https://bugs.freedesktop.org/show_bug.cgi?id=89290
https://bugs.freedesktop.org/show_bug.cgi?id=91495

System info is:

Dell Optiplex 780
Bios A15
Ubuntu 14.04.3 LTS
Gnome 3.12.2

Am I still the only one who is experiencing this issue? 
-- 
Chris
KeyID 0xE372A7DA98E6705C
31.11°N 97.89°W (Elev. 1092 ft)
07:57:25 up 11:34, 1 user, load average: 0.37, 0.41, 0.33
Ubuntu 14.04.3 LTS, kernel 4.2.3-040203-generic #201510030832 SMP Sat
Oct 3 12:34:31 UTC 2015

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