Your GPU is no longer supported by fglrx/Catalyst. Use the default open-source driver. Duplicate issue of: https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/1058040
As for acer-wmi message, it is a duplicate of this bug report (which contains a wrokaround): https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1262797
Your GPU is no longer supported by fglrx/Catalyst. Use the default open-source driver. Duplicate issue of: https:/ /bugs.launchpad .net/ubuntu/ +source/ fglrx-installer /+bug/1058040
As for acer-wmi message, it is a duplicate of this bug report (which contains a wrokaround): https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1262797