Comment 22 for bug 320771

I'm currently also experiencing corruptions type 2 and 3 in an irregular basis across two screens using the proprietary fglrx driver (8.54.3) with a Radeon HD2400 PRO PCI-E. It is not really a problem because it appears and then it takes a few minutes and the corruption is gone completely.

This is rather unusual and I didn't had such issues previously using Ubuntu 8.04 but now I did a fresh install of Kubuntu 8.10. In addition it indicates that this may not be a bug in the xrandr implementation as stated in some other bug as the fglrx 8.54.3 doesn't use xrandr.

Machine data:
- AMD Athlon 64 X2 4400+ Dual-Core @ 2.3 GHz
- ATI Radeon HD 2400 PRO (RV610, PCI-E)
- 2x 19" CRT @ 1280x1024@85Hz each

Software stack:
- Kubuntu Intrepid Ibex (8.10)
- Kernel 2.6.27.11-generic x64_64
- X.org 7.4.2.0
- fglrx 8.54.3.2 (BigDesktop mode)
- KDE 4.1.3

All drivers/software from the repos as I couldn't get the newer fglrx drivers to work with my two monitors. Xrandr implementations doesn't seem to be stable yet. In addition xrandr implementation in the drivers often use modes that are not appropriate for CRT's.

Might this be a result of shared code between the proprietary driver and the free ones? I know that AMD already pushed a lot of code out to the world for free use and this code might be buggy. As these corruptions can be seen regardless of the Hardware actually used (or at least in a range of chips R5xx-R6xx) and regardless of the driver (+version) used.

Can we also be sure that this involves only 64bit versions of the driver(s) used?