[Bug 72555] New: Poulsbo blanking on xrandr rotation using gma500_gfx

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=72555

          Priority: medium
            Bug ID: 72555
          Assignee: dri-devel at lists.freedesktop.org
           Summary: Poulsbo blanking on xrandr rotation using gma500_gfx
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: wolfgang.silbermayr at gmail.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: DRM/other
           Product: DRI

On a PC with an Atom N2600 processor and an integrated Poulsbo gpu, rotation
using xrandr causes the screen to go blank. It actually seems to
work, the system does not crash, just the screen goes blank, and when
setting it back to normal rotation, it comes back to display. Setting
rotation to inverted has no effect at all. The rotation produces some output in
Xorg.0.log:

[   220.740] (II) modesetting(0): Allocate new frame buffer 1024x768 stride
[   225.507] (II) modesetting(0): Allocate new frame buffer 768x1024 stride

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