[Bug 103025] New: [GM45] loss of driver acceleration after some time

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103025

            Bug ID: 103025
           Summary: [GM45] loss of driver acceleration after some time
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: promarbler14 at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 134543
  --> https://bugs.freedesktop.org/attachment.cgi?id=134543&action=edit
Xorg logs with the error

After each boot, the intel driver reports an error after working fine for
several hours:
[ 44974.354] (EE) intel(0): Failed to submit rendering commands (No such file
or directory), disabling acceleration.
with no other errors logged.

The effects are immediately noticeable in any gpu-powered application:
glxgears, for example, stops spinning properly (it appears to shake between the
same two frames and only spins while resizing), and video is blank for players
vlc and mpv. 

I've had this happen for at least the past three boots, with cause seemingly
unknown (I've tested moderate memory pressure, suspend + lid open/close,
concurrent GPU-using programs, and hibernation). The issue appears to have been
present at least intermittently for weeks, way back when I was testing drm-tip
with the 4.13.1 kernel.

System Information:
Distribution: Arch Linux x86_64
DRM-tip commit 13d4fadfbe07 (uses kernel 4.14rc2)
xorg-server 1.19.3-3
xf86-video-intel 1:2.99.917+781+gc8990575-1
libdrm 2.4.83-1
mesa 17.2.1-3

Hardware:
Dell Inspiron 1545 (laptop)

Additionally, the kernel logs three different drm-related warnings and drm also
prints an *ERROR*:
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO
underrun
particularly when the system is resumed.

Nothing happens during the time that the Xorg error occurred. It is difficult
to capture the bug with drm debugging due to its randomness and the huge amount
of disk space the logs would consume, though I will try and gather some data on
it.

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