[Bug 60879] New: X11 can't start with acceleration enabled

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=60879

          Priority: medium
            Bug ID: 60879
          Assignee: dri-devel at lists.freedesktop.org
           Summary: X11 can't start with acceleration enabled
          Severity: blocker
    Classification: Unclassified
                OS: Linux (All)
          Reporter: mustrumr97 at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: DRM/Radeon
           Product: DRI

Created attachment 74857
  --> https://bugs.freedesktop.org/attachment.cgi?id=74857&action=edit
Screenshot of Xorg

I've recently bought a Radeon 7000 graphics card - Sapphire Radeon HD 7870 XT.
I enabled glamor in xorg.conf.

The X server fails to start with glamor enabled. For 10 seconds it shows
nothing. I've attached a screenshot taken with my mobile phone after that.
After killing X the monitor turns off as if the GPU is off (probably true).
X works if I disable glamor. However this way I'd be forced to use swrast.
xorg-xserver - 1.13.2
xf86-video-ati - git or 7.1.0 (both tried)
glamor - git or 0.5 (both tried)
libdrm - git or 2.4.42 (both tried)
kernel - git or 3.7.7 (both tried)
mesa - git

weston also fails to start. It just shows a black screen with a white stripe on
top. Killing it returns me to a tty.

I'll attach parts of the kernel log when starting Xorg and weston.

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