Comment 8 for bug 115267

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CarloBaldassi (carlobaldassi) wrote :

Problem solved!
It amounted at adding these two lines to /etc/modprobe.d/options

options nvidia NVreg_SoftEDIDs=0
options nvidia NVreg_RegistryDwords="PerfLevelSrc=0x2222"

this also solves screen flickering and other strange hangs which occur with the generic kernel.
I found this in [https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.17/+bug/53060 #53060]