[Bug 169615] kde4 GUI very unresponsive and slow (scrolling, resizing) with "ATI Radeon VE"

[Frosch]

https://bugs.kde.org/show_bug.cgi?id=169615


Frosch <p.roediger at web.de> changed:

           What    |Removed                     |Added
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                 CC|                            |p.roediger at web.de




--- Comment #7 from Frosch <p roediger web de>  2009-04-16 17:26:57 ---
I have KDE 4.2 installed and I experience the same problems. I own a brand-new
Lenovo W500 and I'm using the integrated intel GM4500 graphics card.
Compositing works like a charm, just perfectly smooth. But when it comes to
simple tasks like scrolling in a List View (e.g. Dolphin->Detailed View) it
just starts lagging and it feels like my laptop is years old. Interestingly,
the icon view with enabled preview is A LOT smoother, weird.
Also, when in split view mode, moving the "split-slider" (the one that
separates the two sides) is super-slow. This is also true for the one that is 
between the Places/folders and the file list view. This is true in general for
all such separators in all KDE4 apps...

These is not limited to dolphin, though, but all other KDE4 apps show the same
lagginess. It is not like that it is totally unusable but there is definitely
some very inefficient code working in the background.

By the way, disabling desktop effects improves the situation only very
slightly.

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