Public bug reported:
After changing monitors, I've removed the proprietary ATI drivers and
switched to the open source ones to allow me to run the monitors at
different resolutions. Since doing this I'm noticing bands of graphical
interference around the mouse cursor.
It looks to me like the interference bands are 20 pixels wide, and repeated
every 250 pixels across the screen, on both screens. Locations I've measured
(very approximately) are:
1770 - 1989
2025 - 2045
2290 - 2299
2540 - 2559
With the mouse cursor in any vertical position on one of these bands, a
bunch of small flickering horizontal lines appear within the band,
running from the right hand edge of the mouse cursor, to the right side
of the band.
The lines don't move around, with the mouse cursor in any one spot you
get 2-3 lines that just constantly flicker between black and white.
This is on a ATI 1950 (PCI-e), with the first screen running at
1280x1024, and the second 1680x1050. I'm running Ubuntu 8.10, and apart
from the Intel graphics driver update released today, it's fully patched
and up to date.
** Affects: ubuntu
Importance: Undecided
Status: New
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Vertical bands of cursor interference with the open ATI driver
https://bugs.launchpad.net/bugs/320771
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