I have a Dell Vostro 3350 on which I have installed Ubuntu. With VGAswitcheroo I have made sure that the ATI GPU is off when booting. I have configged Ubuntu for extended desktop. Now, when I'm in the desktop the screen keep changing config! It spontaneously keeps changing between a few modes every few minutes:

- Mirror
- Only laptopscreen
- Only external screen
- Original config (extended)

It's driving my crazy! Makes it pretty much unusable. Is there a solution or is there no other option than to look for another distro?