Ubuntu
linux-restricted-modules-2.6.20 package

  1. Bug #115267
  2. Comment #9

Comment 9 for bug 115267

Revision history for this message
Sitsofe Wheeler (sitsofe) wrote :

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"...