I had to reinstall 12.04 because my hard drive died suddenly. After getting a new drive and installing 12.04, I enabled the nvidia driver. Since then the GPU runs full bore constantly (there is only one performance level). As a result, the card is always over 100 degrees Celsius.
Prior to the hard drive dying, it rarely got above 70 degrees Celsius.
I would use the nouveau driver, but the problem is all downloaded videos are all pink. Strange but true.
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