Question about KDE 4.2

Nikos Chantziaras realnc at
Mon Jan 5 19:48:39 GMT 2009

Anne Wilson wrote:
> On Monday 05 January 2009 18:23:39 Nikos Chantziaras wrote:
>> Rex Dieter wrote:
>>> David Carlos Manuelda wrote:
>>>> For example, since I click the K button to raise menu until the menu is
>>>> raised, it is a second or two. The same when running dolphin and
>>>> clicking in folders for example. I don't note this too much while
>>>> running them inside a 3.5.10.
>>> I've never seen such operations take more than an instant, regardless of
>>> which DE is in use.
>>> I would venture there's a different explanation other than the general
>>> "kde4 is slower".
>> This happens if compositing is enabled and a binary-only, proprietary
>> NVidia or ATI driver is used or if EXA acceleration is not enabled (in
>> the case of open source drivers; the proprietary ones don't support EXA.)
> I'm using the free ATi driver and cannot use Desktop Effects without random 
> freezes.  How is this EXA enabled?

Section "Device"
   Option      "UseAtomBIOS" "true"
   Option      "AccelMethod" "EXA"
   # ...

This works with both the radeon as well as the radeonhd driver but only 
with cards up to an X1950.  HD2xxx and above aren't supported yet.

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