Bug#540954: video-radeon: white flashing lines when moving cursor between screens

[Alex Deucher]

On Mon, Aug 10, 2009 at 6:53 PM, Michal Suchanek<hramrach at centrum.cz> wrote:
> Package: xserver-xorg-video-radeon Version: 1:6.12.2-3 Severity: minor File: video-radeon In a two screen setup wnenever I move the mouse cursor between screens pieces of horizontal white lines appear momentarily at random on the right edge of the primary screen. The secondary screen is right of the primary and rotated. I suspect it is specific to this hardware because the lines are quite easily noticed with light web page background and dark scrollbar in Firefox - it seems the web page is bleeding into the scrollbar. I was unable to reproduce this in a terminal or on the smaller screen so it might be also specific to the way Firefox redraws its window. Yes, there is no reason to redraw but like it would stop Mozilla products from redrawing. I did not notice this issue with Radeon X550 card and slightly older X server - had to restart it when replacing the card.

Can you try xf86-video-ati from git master?  This sounds like a
display watermark issue.

Alex