[Bug 108991] glyph corruption on ironlake [glamor]

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108991

            Bug ID: 108991
           Summary: glyph corruption on ironlake [glamor]
           Product: Mesa
           Version: 18.2
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: intel-3d-bugs at lists.freedesktop.org
          Reporter: linuxhippy at gmail.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

Created attachment 142764
  --> https://bugs.freedesktop.org/attachment.cgi?id=142764&action=edit
corrupted title bar

I am experiencing glyph corruption in window titlebars using KDE + compositor 
on an old Ironlake Mobile laptop (i5 540M).

Currently the machine is running Fedora 29 (linux-4.19.6 + Mesa-18.2.6),
however I've seen this issue for quite some time (probably since intel switched
away from SNA to glamor by default - which caused also a noticeable performance
degradation).

Unfortunately I don't know a reliable way to trigger the issue, the only thing
I know is, that it is not caused by suspend/resume,

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