Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free, no registration required.

Every time I lock my screen and then unlock it again I get a really annoying screen flicker that stays until the next reboot. It's not like a graphic glitch it's like the screen is refreshing at a wrong Hz rate. Any ideas for fixes?

Specs: Mobility Radeon HD5470 Graphic card with generic out of the box linux driver, Ubuntu 11.10 64-bit with the 3.0.0-15-generic kernel.

**I would like it if there's a solution not involving the ati proprietary drivers, because they have been nothing but trouble on my machine in the past.

Thanks in advance

share|improve this question
add comment

1 Answer

up vote 0 down vote accepted

I recommend downloading the official ATI drivers and give it a try with them:

Download the newest ATI driver (current version is 12.1)

wget http://www2.ati.com/drivers/linux/amd-driver-installer-12-1-x86.x86_64.run

Once downloaded go to the file location and set it to run as executable

cd /path_of_the_file
chmod 755 amd-driver-installer-12-1-x86.x86_64.run

Use these steps to install

sh ./amd-driver-installer-12-1-x86.x86_64.run --buildpkg Ubuntu/oneiric
sudo dpkg -i fglrx*.deb

Once the driver is installed you need to start up a new xorg.conf file with this command

sudo aticonfig --initial -f

Reboot

sudo reboot
share|improve this answer
    
yeah I know...but that's what I would like to avoid. Are there any xorg settings I could fiddle with for example? since it's just a minor annoyance I'll live with it for now –  Daniel Feb 4 '12 at 19:57
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.