Attached is a logfile from a reset crash
[ 11328.049]
X.Org X Server 1.18.3
Release Date: 2016-04-04
[ 11328.056] X Protocol Version 11, Revision 0
[ 11328.058] Build Operating System: Linux 3.16.0-4-amd64 x86_64 Debian
[ 11328.060] Current Operating System: Linux apollon 4.6.0-rc7-amd64 #1 SMP Debian 4.6~rc7-1~exp1 (2016-05-09) x86_64
[ 11328.061] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.6.0-rc7-amd64 root=UUID=62878f00-afec-4500-affc-1e8ecd1c996e ro resume=/dev/sda10 quiet nohz_full=1,2,3,4,5,6,7
[ 11328.065] Build Date: 05 April 2016 07:00:43AM
[ 11328.067] xorg-server 2:1.18.3-1 (http://www.debian.org/support)
[ 11328.070] Current version of pixman: 0.33.6
[ 11328.074] Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
[ 11328.074] Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 11328.083] (==) Log file: "/home/reinhard/.local/share/xorg/Xorg.0.log", Time: Tue May 10 11:51:36 2016
[ 11328.085] (==) Using config directory: "/etc/X11/xorg.conf.d"
[ 11328.087] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[ 11328.087] (==) No Layout section. Using the first Screen section.
[ 11328.087] (==) No screen section available. Using defaults.
[ 11328.087] (**) |-->Screen "Default Screen Section" (0)
[ 11328.087] (**) | |-->Monitor ""
[ 11328.088] (==) No device specified for screen "Default Screen Section".
Using the first device section listed.
[ 11328.088] (**) | |-->Device "Intel Graphics"
[ 11328.088] (==) No monitor specified for screen "Default Screen Section".
Using a default monitor configuration.
[ 11328.088] (==) Automatically adding devices
[ 11328.088] (==) Automatically enabling devices
[ 11328.088] (==) Automatically adding GPU devices
[ 11328.088] (==) Max clients allowed: 256, resource mask: 0x1f
[ 11328.088] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[ 11328.088] Entry deleted from font path.
[ 11328.088] (**) FontPath set to:
/usr/local/share/dosemu/Xfonts,
/usr/share/fonts/X11/misc,
/usr/share/fonts/X11/100dpi/:unscaled,
/usr/share/fonts/X11/75dpi/:unscaled,
/usr/share/fonts/X11/Type1,
/usr/share/fonts/X11/100dpi,
/usr/share/fonts/X11/75dpi,
built-ins
[ 11328.088] (==) ModulePath set to "/usr/lib/xorg/modules"
[ 11328.088] (II) The server relies on udev to provide the list of input devices.
If no devices become available, reconfigure udev or disable AutoAddDevices.
[ 11328.088] (II) Loader magic: 0x55b8c4f52dc0
[ 11328.088] (II) Module ABI versions:
[ 11328.088] X.Org ANSI C Emulation: 0.4
[ 11328.088] X.Org Video Driver: 20.0
[ 11328.088] X.Org XInput driver : 22.1
[ 11328.088] X.Org Server Extension : 9.0
[ 11328.089] (++) using VT number 2
[ 11328.092] (II) systemd-logind: took control of session /org/freedesktop/login1/session/_32
[ 11328.092] (II) xfree86: Adding drm device (/dev/dri/card1)
[ 11328.719] (II) systemd-logind: got fd for /dev/dri/card1 226:1 fd 8 paused 0
[ 11328.719] (II) xfree86: Adding drm device (/dev/dri/card0)
[ 11328.720] (II) systemd-logind: got fd for /dev/dri/card0 226:0 fd 9 paused 0
[ 11328.722] (--) PCI:*(0:0:2:0) 8086:0166:10cf:16c2 rev 9, Mem @ 0xf640/4194304, 0xd000/268435456, I/O @ 0xf000/64, BIOS @ 0x/131072
[ 11328.722] (--) PCI: (0:1:0:0) 10de:0de8:10cf:1769 rev 161, Mem @ 0xf500/16777216, 0xe000/268435456, 0xf000/33554432, I/O @ 0xe000/128, BIOS @ 0x/524288
[ 11328.722] (II) LoadModule: "glx"
[ 11328.723] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[ 11328.725] (II) Module glx: vendor="X.Org Foundation"
[ 11328.725] compiled for 1.18.3, module version = 1.0.0
[ 11328.725] ABI class: X.Org Server Extension, version 9.0
[ 11328.725] (==) AIGLX enabled
[ 11328.725] (II) LoadModule: "modesetting"
[ 11328.725] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
[ 11328.737] (II) Module modesetting: vendor="X.Org Foundation"
[ 11328.737] compiled for 1.18.3, module version = 1.18.3
[ 11328.737] Module class: X.Org Video Driver
[ 11328.737] ABI class: X.Org Video Driver, version 20.0
[ 11328.737] (II) modesetting: Driver for Modesetting Kernel Drivers: kms
[ 11328.737] (II) modeset(0): using drv /dev/dri/card0
[ 11328.737] (II) modeset(G0): using drv /dev/dri/card1
[ 11328.737] (WW) VGA arbiter: cannot open kernel arbiter, no multi-card support
[ 11328.737] (II) modeset(0): Creating default Display subsection in Screen section
"Default Screen Section" for depth/fbbpp 24/32
[ 11328.737] (==) modeset(0): Depth 24, (==) framebuffer bpp 32
[ 11328.737] (==) modeset(0): RGB weight 888
[ 11328.737] (==) modeset(0): Default visual is TrueColor
[ 11328.737] (II) Loading sub module "glamoregl"
[ 11328.737] (II) LoadModule: "glamoregl"
[ 11328.737] (II) Loading /usr/lib/xorg/modules/libglamoregl.so
[ 11328.753] (II) Module glamoregl: ven