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

[bugzilla-daemon at freedesktop.org]

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

--- Comment #6 from Ben Widawsky <ben at bwidawsk.net> ---
(In reply to comment #5)
> (In reply to comment #3)
> > 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.
> 
> Oddly it seems to come and go for me... but definitely it has existed for a
> long time.

Also, why is it always at the top 1/3 to 1/4 of the screen. Is that the
difference between 80x25 vs the native mode?

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