Display corruption in KDE on F11 with intel graphics

[Patrick O'Callaghan]

On Thu, 2009-06-25 at 16:31 +0200, Andreas Petzold wrote:
> Hi,
> 
> since I've upgraded from F10 to F11, I'm getting corrupted graphics in  
> many kde apps. See
> 
> http://iktp.tu-dresden.de/~petzold/corrupt.png
> 
> for an example. Usually, the desktop background is displayed in  
> toolbars instead of the regular toolbar background, but sometimes this  
> also happens in other places. If I resize the window or mouse-over the  
> affected parts of the window, the problem fixes itself, but it will  
> reappear soon. I've only seen this with kde apps and not with others  
> like firefox. Since F10 and F11 use the same qt version I suspect the  
> intel drivel for my venerable i830 graphics chipset is at fault. Does  
> anybody on this list use F11 with kde on a machine with an (old) intel  
> chipset with or without the same problems that I'm seeing? I haven't  
> had the time to play around with any of the different acceleration  
> options of the new intel driver, I'll check that later.

Under F11 Intel chipsets use Kernel Modesetting by default. This can
cause some problems in some configurations (I'm far from being an
expert). It's easy to check, just reboot with "nomodeset" added to the
Grub kernel line.

poc