Carlo: Do you actually need both of the parameters? Does using options nvidia NVreg_RegistryDwords="PerfLevelSrc=0x2222" alone resolve the problem?
The only information I could really find about the PerlLevelSrc parameter was in this thread: http://www.nvnews.net/vbulletin/showthread.php?t=80888 . It seems that it is set in the Windows driver .inf files provided by some laptop manufacturers. So far it is only reported to help laptop machines (and it does not necessarily make a difference in every case). Further, it is unclear what side effects this parameter might have (e.g. can it damage hardware?) and what purpose it serves aside from "GPU tuning"... -- [nvidia-glx-new] CharacterConsole+Compiz/Beryl crash https://bugs.launchpad.net/bugs/115267 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs