Comment 112 for bug 1007765

Unfortunately, the solution that worked for George does not work on my Lenovo ThinkPad W530, running Ubuntu 13.10.
After trying to adjust brightness, I see the brightness graphic on the screen, and the system freezes immediately.
This laptop has NVidia - Intel hybrid graphics, so the bug is likely not related to fglrx

I'm not able to disable the virtualization options in BIOS, since those are necessary for running VirtualBox. That is necessary for the work I do, in the job where this laptop is used.