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I've been having trouble with gaming for awhile now and a lots of commands that look like it might fix the problems might help are for Ubuntu 12.04 LTS. So how do you downgrade?
After looking at the other posts asking this question, you best bet would be to partition, make sure to move /home (and all keep files) off into that new partition. Leave this, and reinstall over 13.04 with the LTS.
The problems in using
*Point of information: Have you run 12.04 on this device before? I ask to make sure that the issues you have will actually be resolved by a downgrade.