Installing ATI Catalyst in Samsung 305u Notebook

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http://askubuntu.com – I installed Ubuntu 12.04 LTS on my Samsung 305U notebook. The thing is when I close de lid it does't resume from suspension, the same problem reported Here. I removed the proprietary video drivers from system settings and it fixed the problem but videos runs choppy. I tried to install ATI Catalyst drivers as shown Here I couldn't do it the way Stephen Myall explained because it was impossible to install ia32-libs. Then I tried the second most voted aswear: cd /tmp && wget -O amd-driver-12-6-x86_64.run http://goo.gl/XBFyI chmod +x amd-driver-12-6-x86_64.run sudo sh amd-driver-12-6-x86 (HowTos)