[Bug 96473] New: i915.ko corrupt text lines at top, [drm] GPU HANG: ecode 2:0:0x037fffc1, reason: Ring hung

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96473

            Bug ID: 96473
           Summary: i915.ko corrupt text lines at top, [drm] GPU HANG:
                    ecode 2:0:0x037fffc1, reason: Ring hung
           Product: DRI
           Version: unspecified
          Hardware: x86 (IA32)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: fdporg at vega.pgw.jp
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 124438
  --> https://bugs.freedesktop.org/attachment.cgi?id=124438&action=edit
dmesg

Using vanilla Linux 4.4.13, hardware Intel 82865G

On boot, when i915.ko was activated, screen switches to native KMS mode,
but several lines at top is blank, followed by 2 scanlines of random pixels.
Other parts of text looks and scrolls fine, but the blank/random part stays
blank.

dmesg says:

[drm] stuck on render ring
[drm] GPU HANG: ecode 2:0:0x037fffc1, reason: Ring hung, action: reset
[drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including
userspace.
[drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI ->
DRM/Intel
[drm] drm/i915 developers can then reassign to the right component if it's not
a kernel issue.
[drm] The gpu crash dump is required to analyze gpu hangs, so please always
attach it.
[drm] GPU crash dump saved to /sys/class/drm/card0/error
i915: render error detected, EIR: 0x00000010
[drm:i915_report_and_clear_eir [i915]] *ERROR* EIR stuck: 0x00000010, masking
drm/i915: Resetting chip after gpu hang
[drm:i915_reset [i915]] *ERROR* Failed to reset chip: -19

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