Strange visual artifacts in upper left corner of screen which
respond to mouse activity.....
e.schuele at computer.org
Tue Apr 25 13:57:44 UTC 2006
Eric Schuele wrote:
> I just recently began using GDM. This problem is reproducible by
> enabling/disabling GDM on my machine.
> When GDM is enabled, I get four equally sized rectangles in the upper
> left corner of my screen. They are not visible at first but are
> responsive to mouse activity. Meaning, they slowly fill in as I move
> the mouse... and fill in almost completely, as soon as I click the mouse
> These squares draw on top of any window located there. That window will
> carry the discoloration with it if I move the window. The discolored
> squares continue, in the original location, after removing any window
> from the region.
> I originally had load glx, drm, and dri in my xorg.conf file... but
> since removed them just as an experiment. It had no effect on the
> problem. I also had DefaultFbBpp set to 32. Removed that as well to no
> avail. Just swinging wildly here.
> The squares are visible on GDM itself, and any window manager I've used
> (enlightenment and twm).
> I've got (from dmesg)
> ATI Radeon LW RV200 Mobility 7500 M7
> model Generic PS/2 mouse, device ID (a.k.a synaptics touchpad)
> I use Driver "radeon" in xorg.conf.
> Without GDM, no rectangles. No other portupgrades occurred when this
> behavior appeared. Just the installation/configuration of GDM.
> Any ideas what is going on and how to remedy it?
OK... I can tell be the number of replies, everyone just rolled their
eyes at me and figured I'm crazy. But it really does occur. :)
I have found that if I use the GDM provided XDMCP Chooser... that the
problem immediately dissapears.
Anyone have any thoughts on this?
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