[Bug 65099] [GM45] Video corruption on wide desktop

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=65099

--- Comment #11 from Paul Donohue <freedesktop-bugs at PaulSD.com> ---
Three photos containing the same desktop contents (a full-screen browser window
and a terminal on the LVDS1 screen, and nothing on the VGA screens).

In the first corrupted case (without --fb), the corrupted image changes
significantly approx once per second (I have a clock displayed in the bottom
left corner of the screen that counts seconds, so it may be triggered by that).

In the second corrupted case (with --fb), the corrupted image is static and
does not change.  Passing different values into --fb causes different
corruption patterns on the screen, but passing the same value in repeatedly
results in similar (identical?) corruption patterns.

In both cases it looks like ~25 vertical pixels across the top of the LVDS1
screen are correct (not corrupted), but the rest of the LVDS1 and the entire
VGA output are corrupted.

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