SYSTEM SETTING => Additional Drivers => 更新，发现有两个驱动可更新，第二个多了（post-release-updates）就始终安装有问题。
在网上搜寻结果如下：
1、sudo apt-get install fglrx fglrx-amdcccle
2、sudo apt-get install build-essential cdbs dh-make dkms execstack dh-modaliases fakeroot libqtgui4
3、wget http://www2.ati.com/drivers/linux/amd-driver-installer-catalyst-12.10-x86.x86_64.zip
unzip amd-driver-installer-catalyst-12.10-x86.x86_64.zip
chmod +x amd-driver-installer-catalyst-12.10-x86.x86_64.run
4、sudo sh ./amd-driver-installer-catalyst-12.10-x86.x86_64.run --buildpkg Ubuntu/precise
sudo dpkg -i fglrx*.deb
5、sudo amdconfig --initial -f
PS：对于64位的话，经测试成功，就在2和3之间插入sudo apt-get
install lib32gcc1