Proprietary ATI driver makes Kubuntu slow

[Spectrum]

Hello.

I am running a fresh installation of Kubuntu 10.10. I have this problem: Installing ATI driver made my Ubuntu slow.

I have an ATI Radeon HD 5750. I have tried installing the proprietary driver like this:

1. Running "Additional Drivers" (from the K Menu; I don't know the command-line name).
2. Select "ATI/AMD proprietary FGLRX graphics driver".
3. Click "Activate".
4. Reboot.

After rebooting, Catalyst worked but my Kubuntu was significantly slower than before. Switching between desktops or windows took much longer.

I have tried disabling desktop effects. That did not help. "top" (from the command line) does not show any processes hogging resources, so I don't know how to debug this.

Does anyone know what causes this and if it can be fixed? (I have searched a bit but only found old posts that look outdated.)

Thanks in advance.

PS: I have made an identical thread in Ubuntu Forums. So far I have received no replies.

[kapil]

Re: Proprietary ATI driver makes Kubuntu slow

is your system up to date?
i recently installed 10.10 fresh.. and installed the proprietary ati drivers.. running smooth.

[Spectrum]

Re: Proprietary ATI driver makes Kubuntu slow

Thanks for the reply.

I have done "apt-get update" and "apt-get upgrade". My system should be up to date.

[kapil]

Re: Proprietary ATI driver makes Kubuntu slow

oh.. in that case.. sorry buddy.. i donno what should be done.
still.. i sould have tried this:
1. sudo apt-get dist-upgrade
check if it is still slow.
2. disable the proprietary drivers using same "additional driver" app
check if problem has been resolved.

[jpenguin]

Re: Proprietary ATI driver makes Kubuntu slow

I never had a speed issue with FGHRX, although I now use the OSS driver with my HD 4890.

If all else fails, try https://launchpad.net/~ubuntu-x-swat...ive/x-updates; if that fails, use the OSS driver

[sithlord48]

Re: Proprietary ATI driver makes Kubuntu slow

i Just installed the FGLRX driver for my 4830HD and other then the ulgy boot screen , every think is working perfectly and speedily.

[jcer93705]

Re: Proprietary ATI driver makes Kubuntu slow

There is a new release of amd drivers. I am using the old one before this new driver. The new driver came out yesturday. I haven't installed. What's a good way to install the new one? Also I have no issue with the driver i have installed right now.