[Bug 81493] New: graphics corruption (gm45 + git SNA)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81493

          Priority: medium
            Bug ID: 81493
          Assignee: chris at chris-wilson.co.uk
           Summary: graphics corruption (gm45 + git SNA)
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: bitlord0xff at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: git
         Component: Driver/intel
           Product: xorg

Created attachment 103033
  --> https://bugs.freedesktop.org/attachment.cgi?id=103033&action=edit
dmesg

I cannot be sure when it started but I started to see graphics corruption on
terminal emulator first using non-compositing WM (xfce/xfwm), and when you
"print" new content it goes away, or move window ... ("refresh" the
screen/area).
Now I'm testing it with gnome shell, where I see a lot more issues and they
happen more often on different windows (gnome-terminal, nautilus, ...), and
after some time whole gnome shell lost all text on it and some other parts of
the graphics (this second gnome shell "issue" (not sure is it graphics driver,
or gnome-shell) doesn't go away after "refresh", so maybe it is not related or
it is different problem))

Other strange thing is that everything "works" fine, no errors, crashes ...,
nothing important in log files (from end-user perspective) ... (UPDATE: I was
probably wrong, there is something in dmesg! (I think 'epiphany' segfault is
nothing related a lot of bugs in webkit ... I can crash it on different
computers ... (don't want to link that to hw. issue, I think everything is ok,
a lot of other things work fine)

Currently using fedora 20 (up-to-date linux 3.15.5, mesa-10.1.5-1.20140607,
libdrm-2.4.54-1, xorg-x11-drv-intel from git '923e098' ) on gm45

I'll update this bug report with some screenshots 'later'

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