[Bug 89522] Rotating one output stops updating the other

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89522

--- Comment #3 from Asbjørn Sannes <ace at sannes.org> ---
Think I have narrowed it down to xf86-video-ati, found a good commit and a bad
one and bisected to:

e4cd0f4392ea11c93088ad429f36eaaf9bcbf505 is the first bad commit
commit e4cd0f4392ea11c93088ad429f36eaaf9bcbf505
Author: Alex Deucher <alexander.deucher at amd.com>
Date:   Wed Oct 30 15:21:26 2013 -0400

    radeon: enable tiling on SI by default (v2)

    Now that mesa 9.2 is out with support for tiling
    on SI asics, we can enable it here. Tiling improves
    memory bandwidth utilization.

    V2: update man page

    Signed-off-by: Alex Deucher <alexander.deucher at amd.com>

:040000 040000 73cb41fdb12a13eb1844672f43bd06d57b13a661
fc69858d6365cca340241f1372b818abfc84405d M      man
:040000 040000 0ffa685af2e29defb896795d3542d3fe2da82561
8d09649318c53da1cac642bc79588b2323947086 M      src

Also running latest git of xf86-video-ati with that reverted also fixes it.
I am going to try it on another box with a newer stack to see if setting
ColorTiling2D to off helps there aswell.

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