Been exercising my google skills and have several things to try including seeing if I can find a video card to try to get off the embedded Intel graphics.  As I noted, the embedded Intel graphics go along with the skylake processor.  Just looked at the changelog for the latest (4.8..8) kernel.  Recall this problem did not occur until after 4.8.4,  Found this in the changelog:

* Thu Oct 27 2016 Justin M. Forbes <jforbes@fedoraproject.org>
- CVE-2016-9083 CVE-2016-9084 vfio multiple flaws (rhbz 1389258 1389259 1389285)
- Skylake i915 fixes from 4.9
- Fix MS input devices identified as joysticks (rhbz 1325354)

* Mon Oct 24 2016 Justin M. Forbes <jforbes@fedoraproject.org> - 4.8.4-200
- Linux v4.8.4 rebase



My system uses the i915 drivers.  Looks like kernel change were made after 4.8.4,  That could be it.  I'll try a few things and will file a bugzilla report.  Still need to search bugzilla to see if something like this has been reported.

Charlie


On Sun, Nov 20, 2016 at 12:06 PM, Charles R. Dennett <cdennett@gmail.com> wrote:
There is no separate video card.  The motherboard has embedded graphics.
 The processor is a Intel i5-6400 quad core skylake chip and it uses the
Intel drivers that come with Fedora.  The system is a relatively new
ASUS M32CD.  Bought it a few months ago to replace my old ageing server
and has been running fine until now.

Here's what's shown in my .xsessions-errors file:

Service started, version: 7.0.0
OpenGL vendor string:                   Intel Open Source Technology Center
OpenGL renderer string:                 Mesa DRI Intel(R) HD Graphics
530 (Skylake GT2)
OpenGL version string:                  3.0 Mesa 12.0.3
OpenGL shading language version string: 1.30
Driver:                                 Intel
GPU class:                              Unknown
OpenGL version:                         3.0
GLSL version:                           1.30
Mesa version:                           12.0.3
Linux kernel version:                   4.8.4
Requires strict binding:                yes
GLSL shaders:                           yes
Texture NPOT support:                   yes
Virtual Machine:                        no


I also found these lines related to Intel in /var/log/Xorg.0.log:

[    18.898] (II) intel: Driver for Intel(R) Integrated Graphics Chipsets:
        i810, i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G,
        915G, E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM,
        Pineview G, 965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35,
Q33,
        GM45, 4 Series, G45/G43, Q45/Q43, G41, B43
[    18.898] (II) intel: Driver for Intel(R) HD Graphics: 2000-6000
[    18.898] (II) intel: Driver for Intel(R) Iris(TM) Graphics: 5100, 6100
[    18.898] (II) intel: Driver for Intel(R) Iris(TM) Pro Graphics:
5200, 6200, P6300

If there is a different command I can run to obtain information like
this, just let me know what it is.

Charlie




On 11/20/2016 09:39 AM, Patrick O'Callaghan wrote:
> On Sun, 2016-11-20 at 08:46 -0500, Charles R. Dennett wrote:
>> I'll be glad to supply any additional information anyone thinks might help.
>
> You might start by giving your video card, and whether it's using
> proprietary or free drivers.
>
> poc
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--
Charlie