Comment 26 for bug 647802

I have a ATI Radeon HD 5450, and a newly installed, fully updated xubuntu 11.10. I cannot get dual monitors to work after installing the proprietary driver. I've tried running the amdcccle program
1. From the menu, administrative mode: nothing happens at all (non-admin mode does run).
2. From the terminal, using both sudo and gksu: after any change at all, hitting "apply" causes program to disappear, with no output.
3. From Alt-F2, using gksu: same as from terminal. Using sudo, nothing happens, as expected since it can't prompt for the password.

I had the same problems with lubuntu, if I remember correctly. I do think it worked with Ubuntu, but I stopped using the driver because it caused shutdown failures 90% of the time. It seemed to be OK in the 12.04 beta, though, with my limited experience so far.