I found this from Kraptor in another thread (164589) dealing with
flicker:
1) The file nvidia-kernel-nck:
- You use the 169.12 driver, so it os the nvidia-new driver, it must be
specified correctly.
- You must tell the driver it is a mobile card, if not the PerfLevelSrc may
not work.
- So you must have these lines (and I only have these two, not three like
you):
alias char-major-195* nvidia
options nvidia_new NVreg_Mobile=1
NVreg_RegistryDwords="PerfLevelSrc=0x2222"
2) The location of nvidia-kernel-nck:
- You may have (like me) two versions of this file. One in /etc/modprobe.d/
and another in /etc/modutils/
- The file in /etc/modprobe.d must be the one that applies when the driver
is loaded and is the file we talk about.
- The file in /etc/modutils/ must contain only next line:
alias char-major-195 nvidia
I don't have this second file, and in fact don't have the directory
called /etc/modutils. Is it necessary, and should the settings be the
same as mentioned in 2) if my driver is different from the one he is
talking about ?
--
laptop video output garbage
https://bugs.launchpad.net/bugs/234292
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