3D effects no longer working

I did an update to KDE 4.5 recently, and afterwards noticed that 3D effects were no longer enabled. When I try to enable them from desktop settings, I get a pop up in the panel that says another application is preventing compositing (or something like that).

I have the nvidia 256.53 drivers installed and ‘glxinfo’ says direct rendering is on. I’m also using X server 1.9, but compositing was working with the new X server before I did the update to 4.5.

Anyone else getting this or know a fix?

Are you using KWIN?
And is that the setting you have in Default Applications > Window Manager?

says another application is preventing compositing (or something like that).
Try to be a little less vague

Yes, I’m using KWin. I’ll post the exact message later when I’m in front of my Linux box.

Looks like you need to reinstall the NVIDIA driver. Some X update/upgrade will have damaged it’s install, or the driver module from the repos does not have the module for the running new kernel.

I reinstalled the nvidia driver this morning after I updated X server, which was about the fourth time I’ve installed it lately while trouble shooting this problem.

The exact message I get when trying to enable compositing is this:

Desktop effects have been suspended by another application. You can resume using shift > alt > F12

Here are some screen shots:



Try a new user login and see if the issue persists there.

I had the exact same issue a few days ago on my 11.2 box, what bugged me the most out of it is that there is no log to be found where you at least can find which other application. It was enough to reinstall the nvidia drivers (manually), it happened after this set of updates:

rpm -qa --last | more

sudo-1.7.2-2.3.1                              Wed 08 Sep 2010 04:31:34 PM CEST
MozillaFirefox-branding-openSUSE-3.5-8.10.1   Wed 08 Sep 2010 04:31:32 PM CEST
xorg-x11-server-7.4-61.64.1                   Wed 08 Sep 2010 04:31:30 PM CEST
xorg-x11-Xvnc-7.4-61.64.1                     Wed 08 Sep 2010 04:31:27 PM CEST
MozillaFirefox-theme-oxygen-1.4.90-3.3.1      Wed 08 Sep 2010 04:31:25 PM CEST
wine-1.3.2-2.1                                Wed 08 Sep 2010 04:31:22 PM CEST

as I said I did the nvidia update manually, it does an uninstall of the previous install which I am not sure the rpm does, and that fixed it.

3D effects work with a new user.

So now if you go back to your normal account
Do a console login and rename and backup .kde4 - like this:

mv .kde4 .kde4-backup

then switch to su -
and type reboot

At the login screen now, remember to make sure the session is selected to kde and login

Before anyone says: … I know a reboot is not necessary. It’s just easy to get our user back to the login screen and make sure kde session is selected.

@ pilotgi
If you have settings like in knode, konversation, kopete…etc
we can get them back from the backup