[Bug 80478] screen freeze for few seconds...

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80478

--- Comment #1 from Alin M Elena <alinm.elena at gmail.com> ---
Sorry seems I clicked to early... 


Practically screen freezes for few seconds fom time to time 
in dmesg I find the following message

[  184.928295] [drm] stuck on render ring
[  184.928847] [drm] GPU HANG: ecode 0:0x85ffbcfa, in Xorg [1008], reason: Ring
hung, action: reset
[  184.928851] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[  184.928852] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[  184.928853] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[  184.928854] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[  184.928856] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[  186.930951] [drm] Enabling RC6 states: RC6 on, RC6p on, RC6pp off


the full dmesg | grep drm 
follows
[alin at abaddon:~]: dmesg | grep drm 
[    0.000000] Command line: BOOT_IMAGE=/vmlinuz-3.15.1-2.g7d71861-desktop
root=UUID=ceee340b-13a5-4446-abb5-0adf49241578 i915.i915_enable_rc6=7
i915.i915_enable_fbc=1 i915.lvds_downclock=1 drm.vblankoffdelay=1
i915.semaphores=1 splash=silent quiet showopts
[    0.000000] Kernel command line:
BOOT_IMAGE=/vmlinuz-3.15.1-2.g7d71861-desktop
root=UUID=ceee340b-13a5-4446-abb5-0adf49241578 i915.i915_enable_rc6=7
i915.i915_enable_fbc=1 i915.lvds_downclock=1 drm.vblankoffdelay=1
i915.semaphores=1 splash=silent quiet showopts
[    1.245576] [drm] Initialized drm 1.1.0 20060810
[    1.261951] [drm] Memory usable by graphics device = 2048M
[    1.261958] fb: switching to inteldrmfb from VESA VGA
[    1.295863] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[    1.295864] [drm] Driver supports precise vblank timestamp query.
[    1.385980] [drm] GMBUS [i915 gmbus vga] timed out, falling back to bit
banging on pin 2
[    1.873365] fbcon: inteldrmfb (fb0) is primary device
[    2.714865] [drm] Enabling RC6 states: RC6 on, RC6p on, RC6pp off
[    2.882377] [drm:intel_dp_start_link_train] *ERROR* too many full retries,
give up
[    3.349796] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[    3.357497] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor
0
[  184.928295] [drm] stuck on render ring
[  184.928847] [drm] GPU HANG: ecode 0:0x85ffbcfa, in Xorg [1008], reason: Ring
hung, action: reset
[  184.928851] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[  184.928852] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[  184.928853] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[  184.928854] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[  184.928856] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[  186.930951] [drm] Enabling RC6 states: RC6 on, RC6p on, RC6pp off


I have also attached the content of the error.
regards,
Alin

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