Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have two monitors which where recognized in Ubuntu 12.04 after the installation was completed but now, after installing the ATI driver, one of my monitors is shown as "Laptop". Everytime I try to switch "Mirror displays" off I get an error saying that the resolution is not supported.

share|improve this question
We need more hardware information to help you, can you look at this question and then edit your question adding the information? – Jorge Castro Apr 27 '12 at 16:35

Since you installed the proprietary ATI driver, you have to use the tool AMDCCLE to configure your monitors. Just search "AMD" in the dash, and then you can change the resolution there.

share|improve this answer
(I don't have access to my ATI machine, otherwise I'd add screenshots.) – James Apr 13 '12 at 12:59
Thank you four your reply :) .. It works well. – Robert Apr 15 '12 at 18:27

In order to mirror displays, they must both support any one resolution. Set both monitors to the highest common resolution, and then try to mirror the displays again. However, the highest common resolution may be as low as 800x600 or even 640x480, which is not a good resolution for easily using newer versions of Ubuntu.

share|improve this answer

protected by Community Apr 28 '12 at 10:22

Thank you for your interest in this question. Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).

Would you like to answer one of these unanswered questions instead?

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