Okay so actually, this is an ATI/Xorg issue. I disabled the proprietary driver, and it works fine, both with gnome-display and xrandr. Now, with the proprietary driver (that I just enabled again), even xrandr slows the computer to display, ran without arguments.
-- gnome-display-property eats loads of CPU to change resolution https://bugs.launchpad.net/bugs/375368 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
