[Bug 71871] [ALL] visual corruption when kms kicks in

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=71871

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[IVB, HSW] visual           |[ALL] visual corruption
                   |corruption when kms kicks   |when kms kicks in
                   |in                          |

--- Comment #3 from Chris Wilson <chris at chris-wilson.co.uk> ---
The cause is that we scribble over the GTT whilst the outputs are still reading
from it (during BIOS -> KMS takeover). It is not yet fixed, and the regression
is on all machines dating from about 3.2 - in some cases this is known to also
cause a GPU hang.

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