[Bug 80229] New: [HSW] [drm]stuck on render ring / Hangs for a while, and then continues with glitches.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80229

          Priority: medium
            Bug ID: 80229
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [HSW]  [drm]stuck on render ring / Hangs for a while,
                    and then continues with glitches.
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: byoungchan.lee.public at gmail.com
          Hardware: SPARC
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Intel
           Product: DRI

Created attachment 101353
  --> https://bugs.freedesktop.org/attachment.cgi?id=101353&action=edit
Xorg.0.log

Bug description:
Hangs for a while, and then continues with some character or window glitches.

System environment:
-- chipset: Intel Pentium 3556U with haswell-based mobile graphics.
-- system architecture: x86_64
-- xf86-video-intel: 2.99.910-0ubuntu1
-- xserver: 1.15.1-0ubuntu2
-- mesa: 10.1.3-0ubuntu0.1
-- libdrm: 2.4.52-1
-- kernel: 3.13.0-29-generic
-- Linux distribution: Ubuntu 14.04
-- Machine or mobo model: Lenovo IdeaPad S310 (LENOVO_MT_20300)


Reproducing steps:
While using programs like firefox(usually hang occurs while surfing complex
webpage.) or libreoffice, system hangs for a while.(usually 3~10 seconds.)
After that, system hangs for a while, and then continues with some character or
window glitches.


Additional info:

Xorg.0.log, dmesg, i915_error_state, syslog (/var/log/syslog) attached.

  render command stream:
    IPEHR: 0x780c0000

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