Originally posted by microshaft
Just upgraded to 4.7-S and upgrade X to latest. X loads just fine and runs -- very speedily at that. However, I'm getting some kind of artifact in the upper right hand corner, a square block of color that obsures any window behind it. It changes when windows are moved -- sometimes.
Cursors, however, overlay ontop of this box. glxgears runs fine.
Tried the tips at http://www.thirteenandtwo.org/nvidia/faq.html
I had a machine doing weird things and I disabled MTRR's and AGP and now it works.
I haven't bothered seeing which thing actually fixed it yet, but I would suggest starting from an 'everything off' situation and adding things and seeing what breaks