I'm having the same problem on an Acer Aspire A250. When Appearance>Visual Effects is set to None, everything works just fine. But when it's set to Normal or Extra and I try to extend the desktop, the system will freeze with a black screen and a nonresponsive cursor (even Num Lock is unresponsive.) If I already have an extended desktop and try to change Visual Effects, I'll only get an error message.
-- Setting up dual-head of exactly 2048 pixels wide ends up with a black screen. Setting it up with more than 2048 pixels crashes X https://bugs.launchpad.net/bugs/486056 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
