[Bug 103812] New: gm965 - system hangs for several seconds

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103812

            Bug ID: 103812
           Summary: gm965 - system hangs for several seconds
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: chrischavez at gmx.us
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 135581
  --> https://bugs.freedesktop.org/attachment.cgi?id=135581&action=edit
dmesg output for drm-tip b4da247 on Inspiron 1525

Per comment 68 of bug 96781, I am filing this separate bug.

Affected machine is Dell Inspiron 1525 with GM965. Running the `xrandr` command
or switching VTs is sufficient to trigger this issue.

Currently using Ubuntu 17.10 (64 bit), though this issue has been present for
the past few versions. At the moment, my ability to test any fixes is limited
to using drm-tip debs from
http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-tip/ . The issue is still
present as of commit b4da24717364bc69bb981a1536be64413a582f3a.

Example dmesg output is attached.

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