[Bug 19215] cursor corruption when moving over vertical 'strips' of the screen

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=19215





--- Comment #11 from Ancoron <ancoron at chaoslayer.de>  2009-03-10 15:55:21 PST ---
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 at 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?


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