I found a good and simple solution here: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/82875/comments/8 just added
Option "noint10" "yes"
in the driver section... and all went good, 1300+fps :D I've a bug in compiz (about 1/5 of the screen at the right doesn't refresh correctly) but this is a different bug. good bye ;)
I found a good and simple solution here: https:/ /bugs.launchpad .net/ubuntu/ +source/ xorg/+bug/ 82875/comments/ 8
just added
Option "noint10" "yes"
in the driver section... and all went good, 1300+fps :D I've a bug in compiz (about 1/5 of the screen at the right doesn't refresh correctly) but this is a different bug.
good bye ;)