Comment 42 for bug 578342

(In reply to comment #30)
> I have one user report that this was fixed between Debian kernel versions
> 2.6.32-15 and 2.6.32-18, which have radeon drivers from 2.6.33.5 and 2.6.33.7
> respectively. So one of the changes to output handling in there may have fixed
> this.

Sorry, the latter version is actually 2.6.33.6. There aren't many radeon changes between these:

commit f417b91c30e84e759d395f45d524eeee95250822
Author: Dave Airlie <email address hidden>
Date: Sat May 29 06:50:37 2010 +1000

    drm/radeon: fix the r100/r200 ums block 0 page fix

commit 1a0c0aa4945dfa8ac3adc2818e166b40eb5dc346
Author: Dave Airlie <email address hidden>
Date: Wed Feb 24 17:17:13 2010 +1000

    drm/radeon: r100/r200 ums: block ability for userspace app to trash 0 page a
nd beyond

commit 7840726875499c2e4b195776f2a0090935d33f39
Author: Alex Deucher <email address hidden>
Date: Tue May 18 00:23:15 2010 -0400

    drm/radeon/kms/atom: fix typo in LVDS panel info parsing

commit 66ff9ff4525f96b24867f734d99950b5d654f76b
Author: Alex Deucher <email address hidden>
Date: Tue May 18 19:26:46 2010 -0400

    drm/radeon/kms: reset ddc_bus in object header parsing