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F9 X11 mouse pointer grows hair and invisible screen boundaries



I have a peculiar problem that just started on my Fedora 9 system
where my mouse pointer will suddenly "grow hair"; it will get a lot of
random black pixels surrounding the pointer graphic (probably contained
within a 20x20 pixel area).  Whenever the pointer graphic is changed by
an application (like crossing over a scrollbar) the random pattern of
attached hair will also change.

More annoyingly, when this happens, the pointer appears to have
lost track of the screen boundaries.  You can move it in one direction
and it will hit some invisible random wall, as if it was at the edge
of the screen even though its not.  Sometimes it will jump/warp to a
different part of the screen and the location of these invisible walls
will randomly change.  This makes using applications or even
accessing menus or close buttons very challenging.

When I can manage to close down a lot of applications, the problem
will often clear up; which makes me think it may be more likely during
a low memory condition.  Although I never do actually run out of free
memory, and I have plenty of swap.


This is a 32-bit kernel, version 2.6.26.5-45.fc9.i686

The video card shows up in a system scan as:
  ATI Technologies Inc RV350 AS [Radeon 9550]
  Chipset: "ATI Radeon 9600 AS (AGP)" (ChipID = 0x4153)

The vendor's name on the box was:
  Diamond ATI Stealth X1050  (AGP 256MB)

The Xorg driver chosen for this was:
  /usr/lib/xorg/modules/drivers/radeon_drv.so
which is from package xorg-x11-drv-ati-6.8.0-19.fc9.i386

I've been running for a long time with an xorg.conf which turns
off the DRI option to work around lockup problems with this
particular card.  But this pointer hair is a new problem.
   Option "DRI" "off"

My screen is 1440 x 900 x 24, monitor is  DELL E198WFP

Any ideas?
-- 
Deron Meranda


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