I'm using Ubuntu 12.04 LTS on Asus K43; Memory 5.8 G.B.; Processor Intel core i7 CPU@2.00 GHZx8; Graphics: GeForce GT 540m/pcie/ssf2; OS type: 64 bit and Disk 26.4 G.B. I faced a problem (Black Screen) after updating my Geforce driver. The issue has been solved using the following command jockey-text -e xorg:nvidia_current,however, the system performance seems considerably slow comparing it with the previous state (before the Geforce driver problem) specially at start up it takes more time than before and the resolution is less as well. Is there away to fix this please? Regards.
I've received an automatic update which includes a driver update for Geforece that initiated the problem from the first place. After this automatic update things turned to be as good as it was before the problem took place affecting the performance after being solved.