Ubuntu
xserver-xorg-video-intel package

  1. Bug #686388
  2. Comment #85

Comment 85 for bug 686388

Revision history for this message
In , Chris Wilson (ickle) wrote :

commit c7bd4c25650704d4d065eb4ce2a122d2a80ce804
Author: Chris Wilson <email address hidden>
Date: Tue Apr 24 16:36:50 2012 +0100

    drm/i915: Remove too early plane enable on pre-PCH hardware

    Enabling the plane before we have assigned valid address means that it
    will access random PTE (often with conflicting memory types) and cause
    GPU lockups. However, enabling the plane too early appears to workaround
    a number of bugs in our modesetting code.

    Cc: Franz Melchior <email address hidden>
    References: https://bugs.freedesktop.org/show_bug.cgi?id=39947
    References: https://bugs.freedesktop.org/show_bug.cgi?id=41091
    References: https://bugs.freedesktop.org/show_bug.cgi?id=49041
    Signed-off-by: Chris Wilson <email address hidden>
    Acked-by: Jesse Barnes <email address hidden>
    Signed-off-by: Daniel Vetter <email address hidden>