Hello,

I have the 12.04 version of kubuntu on my personal computer.
Since two days my task manager is really slow (1 or 2 seconds to display a window when I click on it). I first thought it was a virus but when I arrived this morning on my professional computer (which have the same version) the problem was the same.

Am I the only one ? Do you have any idea how to solve this annoying problem ?

Thanks in advance !

is anything other than windows popping up slow on your system?

did you do an upgrade or install new sw 2 day's ago ?

does disable composting help (alt+shft+F12) ?

First thank you for your answer !

Everything works fine except the task manager. I precise that the window are popping up normally (quickly and without lag) once the task manager react (but the reaction of the task manager can last 1 or 2 seconds).

I didn't do any update recently and disabling composting help doesn't seem to work.

if you created and tested a new user this would indicate whether there's an installed app or config setting on the 2 computers causing it

you could:
- rebuild the system config cache (usually ignore the messages): kbuildsycoca4 --nonincremental
- with your account not logged into KDE remove the KDE cache: /var/tmp/kdecache/user_account

Just in case it could be related - do these systems use Nvidia graphics?

@bcooksley: I have a nvidia on my personnal computer. For the profesional one I found this with "lspci" : Intel Corporation 4 Series Chipset Integrated Graphics Controller.

@google01103: I will try with a new user. The command "kbuildsycoca4 --nonincremental" doesn't seem to work.

SAKDOSS wrote:@google01103: I will try with a new user. The command "kbuildsycoca4 --nonincremental" doesn't seem to work.

it would if I could spell

Code: Select all

kbuildsycoca4 --noincremental