Comment 7 for bug 320771
Revision history for this message
| myxiplx (myxiplx) wrote Vertical bands of cursor interference with the open ATI driver | #7 |
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0e1f616
(Get the code!)
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.