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Red Bull 01-12-2011 03:40 PM

Graphics Lag Problem, ATi Drivers
I just did a fresh install of Debian 5.0.7 and then installed the ATi drivers for my Radeon HD 4890 using this:
The install went well and everything seemed okay but all my windows lag when I move them and when I scroll web pages it lags. It looks like everything is warping when I move stuff around. Any ideas?

markush 01-12-2011 03:44 PM


did you issue the command aticonfig --initial?

is the module fglrx loaded? you can check this with

lsmod | grep fglrx

Red Bull 01-12-2011 09:13 PM

Thanks for your reply but this is what happens when I type in those commands:

frank@Frank-PC:~$ aticonfig --initial
Found fglrx primary device section
 Unable to find any supported Screen sections
frank@Frank-PC:~$ lsmod | grep fglrx

markush 01-13-2011 12:17 AM

Well, you can load the module manually:

modprobe fglrx
otherwise if it is a very new graphics-adapter, maybe the module is not yet ready to support your device. I've a HD5470 and experienced such problems since it doesn't run with my custom kernel.


Red Bull 01-13-2011 12:28 AM

I ran that command and got module fglrx not found.

markush 01-13-2011 03:08 AM

It seems, that the driverinstallation went wrong.

I'd recommend to install the driver from the ATI-site:, run the script and follow the recommendations.

Don't forget to issue aticonfig --initial afterwards.

Good luck


Red Bull 01-13-2011 04:13 PM

I uninstalled the drivers, rebooted, downloaded the drivers from the ATi site, installed them, ran aticonfig --initial, rebooted again, and nothing has changed.
Do you think maybe I should try installing the 10.11 drivers?

Edit: Never mind that didn't work either.

markush 01-13-2011 04:32 PM

Do you now have the 10.12 driver?


Red Bull 01-13-2011 06:41 PM

Accidental double post.

Red Bull 01-13-2011 06:42 PM

I had the 10.12 and switched to the 10.11 just to see if it would be better but the problems still the same. I'm still running 10.11 though.

markush 01-14-2011 02:37 AM

mh, on my laptop the driver became better with every version. When the laptop was new there was 10.10 available.


Red Bull 01-14-2011 12:44 PM

I'm getting tired of this, I'm just going to switch to Fedora and see how that works out.

markush 01-14-2011 02:57 PM

Well, Slackware64-13.1 works well with 10.12, but I'm experiencing problems with Slackware-current with kernel But I posted in the forum and found a solution (hopefully, haven't tried it yet), here the link:


Red Bull 01-14-2011 03:36 PM

I want to get into Slackware when I become a little more familiar with Linux and the commands and everything. Thanks a lot for your help.

markush 01-14-2011 03:44 PM

mh, try Slackware if you want. The community here at LQ is very helpful and knowledgeable, the Slackwareforum here at LQ is the official forum for Slackware. Sou you'll always find excellent help. And don't think that Slackware is difficult, it's probably one of the easiest distributions one can use. Read this: and this:
Also Slackware is a very good distribution for learning-purposes, I mean if you really want to learn about Linux.


Red Bull 01-14-2011 04:48 PM

Ok thanks, I'll give it a shot on my laptop.

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