Bug 248230

Summary:	kde sc 4.5 noticeably slower than before upgrade
Product:	[Plasma] kwin	Reporter:	Unknown <null>
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	normal
Priority:	NOR
Version:	0.2
Target Milestone:	---
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Unknown 2010-08-18 11:37:10 UTC

Version:           4.5 (using KDE 4.5.0) 
OS:                Linux

Since I upgraded my Kubuntu 10.4 to KDE SC 4.5 (with some trouble, see https://bugs.edge.launchpad.net/kubuntu-ppa/+bug/615902), KDE is noticeably slower. It's workable but not a step forward, rather a step backwards. Just not as 'snappy'.

Note: it 'feels' like it has to with the graphics rendering. I should note that I patched xorg.conf so that KDE 4.4 with desktop effects ran smoothly. See https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/568988. Perhaps this causes the slowing down now?

Perhaps related to bug https://bugs.kde.org/show_bug.cgi?id=245806 but in my case it's not seconds but tenths of seconds.

Reproducible: Didn't try

Comment 1 Christoph Feck 2010-08-18 12:14:59 UTC

Do you have "Blur" enabled in Desktop Effects?

Comment 2 Unknown 2010-08-18 12:18:29 UTC

(In reply to comment #1)
> Do you have "Blur" enabled in Desktop Effects?

Yes, and disabling it makes the difference!

Comment 3 Thomas Lübking 2010-08-18 14:29:13 UTC

please have a look at bug #243181 then and hang in your gpu string (see comments #29/#30) for blacklisting... =\

*** This bug has been marked as a duplicate of bug 243181 ***