[Bug 67823] New: xf86-video-intel 2.21.14-1 slows down gnome-shell with SNA accelleration

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=67823

          Priority: medium
            Bug ID: 67823
          Assignee: chris at chris-wilson.co.uk
           Summary: xf86-video-intel 2.21.14-1 slows down gnome-shell with
                    SNA accelleration
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: v.holthaus at procar.de
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: Driver/intel
           Product: xorg

Hardware:

NVidia GT555M 

Software:

Arch Linux Kernel 3.10.3-1-ARCH
bumblebee 3.2.1-3
nvidia driver 319.32
xf86-video-intel 2.21.14-1

If i change the accelleration from UXA to SNA the gnome-shell slows
dramatically down. No error in the Xorg.0.log or dmesg log.

With the UXA accelleration everything works fine.

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