Question about KDE 4.2

Nikos Chantziaras realnc at
Mon Jan 5 21:56:18 GMT 2009

Anne Wilson wrote:
> On Monday 05 January 2009 19:48:39 Nikos Chantziaras wrote:
>> 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"
>>    # ...
>> EndSection
>> 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.
> So the X600 should be OK.  Does that "UseAtomBIOS" apply to all these older 
> cards?

Not sure.  You can grep -i atom your Xorg.0.log and check if it applies 
for you.

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