[Bug 96525] Display Freeze

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96525

thzplanken at gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |major
                 CC|                            |thzplanken at gmail.com
            Version|XOrg git                    |unspecified
              Alias|                            |planken
           Priority|medium                      |high

--- Comment #1 from thzplanken at gmail.com ---
I apologize for not being a linux expert and I apologize for any possible
mistakes I make filling this in. 
I experience exactly the same phenomenon. Problems started when upgrading
Debian Stretch today to linux 4.6 kernel.
Everything worked fine on 4.5 but today, a few seconds after logging on,
graphics freezes. I can no longer open/close/move windows,  but I can still
move the mouse cursor and ssh into this machine. It hangs quickly  but also
randomly when using different programmes (Chromium, Libreoffice Impress,...)
Restarting the computer has no lasting effect. What does seem to have an effect
is to create /etc/X11/xorg.conf.d/20-intel.conf and fill it with
Section "Device"
   Identifier "Intel Graphics"
   Driver     "intel"
   Option "AccelMethod" "uxa"
EndSection,
But this leads to slow graphics on this computer.

EndSection
Dmesg tells me:
...
[  188.115049] [drm] GPU HANG: ecode 8:0:0xfffffffe, in chromium [1241],
reason: Ring hung, action: reset
[  188.115055] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[  188.115057] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[  188.115059] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[  188.115061] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[  188.115063] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[  188.116615] drm/i915: Resetting chip after gpu hang
[  196.144514] [drm] stuck on render ring
[  196.155180] [drm] GPU HANG: ecode 8:0:0xfffffffe, in Xorg [730], reason:
Ring hung, action: reset
[  196.157852] drm/i915: Resetting chip after gpu hang
[  204.144018] [drm] stuck on render ring
[  204.154825] [drm] GPU HANG: ecode 8:0:0xfffffffe, in Xorg [730], reason:
Ring hung, action: reset
[  204.155240] [drm:i915_set_reset_status [i915]] *ERROR* gpu hanging too fast,
banning!
...

uname -a
Linux debian 4.6.0-1-amd64 #1 SMP Debian 4.6.1-1 (2016-06-06) x86_64 GNU/Linux

lspci
00:00.0 Host bridge: Intel Corporation Braswell SoC Transaction Router (rev 21)
00:02.0 VGA compatible controller: Intel Corporation Braswell Integrated
Graphics Controller (rev 21)
00:13.0 SATA controller: Intel Corporation Braswell SATA Controller (rev 21)
00:14.0 USB controller: Intel Corporation Braswell USB xHCI Host Controller
(rev 21)
00:1a.0 Encryption controller: Intel Corporation Braswell Trusted Execution
Engine Interface (rev 21)
00:1b.0 Audio device: Intel Corporation Braswell HD Audio Controller (rev 21)
00:1c.0 PCI bridge: Intel Corporation Braswell PCIe Port 1 (rev 21)
00:1c.1 PCI bridge: Intel Corporation Braswell PCIe Port 2 (rev 21)
00:1c.2 PCI bridge: Intel Corporation Braswell PCIe Port 3 (rev 21)
00:1f.0 ISA bridge: Intel Corporation Braswell Platform Controller Unit LPC
(rev 21)
00:1f.3 SMBus: Intel Corporation Braswell Platform Controller Unit SMBus (rev
21)
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411
PCI Express Gigabit Ethernet Controller (rev 06)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411
PCI Express Gigabit Ethernet Controller (rev 06)
03:00.0 Network controller: Ralink corp. RT3090 Wireless 802.11n 1T/1R PCIe

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