Public bug reported:

Binary package hint: kdevelop

I am using kdevelop on my ubuntu gutsy laptop and when I'm using xgl (I have an 
ATI gpu) it's really hard to work with kdevelop.
When I'm scrolling in sourcecode the redraw takes too long which results in 
flickering and (which is the most annoying thing) it's not possible to scroll 
to the target location, because kdev. scrolls many pages without stopping even 
if I'm no longer pressing the cursor keys. The only chance to find the desired 
codeline is to press slowly page-up and -down and then use the arrow keys 
inside the visible area.

First I thought it would be a "regular bug" in kdevelop, but then I
tried to disable xgl via ~/.config/xgl-server/disable and it was back to
normal.

So there is a problem with kdevelop when using xgl+fglrx from gutsy.
kdevelop+X.org without xgl and fglrx works fine.

** Affects: kdevelop (Ubuntu)
     Importance: Undecided
         Status: New

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KDevelop scrolls really slow when using xgl
https://bugs.launchpad.net/bugs/152846
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