NVIDIA driver and DPMS: backlight never switches off
D. D. Brierton
darren at dzr-web.com
Wed Jan 11 22:23:44 UTC 2006
On Wed, 2006-01-11 at 20:45 +0000, D. D. Brierton wrote:
> I am still using version 7676 of the NVIDIA driver because I am stuck on
> kernel 2.6.13 (Firewire problems with 2.6.14) and Livna aren't building
> driver updates for the old kernels. If you are using the latest 8178
> driver maybe I should try building an rpm of it for my kernel from
> Livna's src rpm and trying again. Are you using 8178?
Well, I just built and installed the 8178 driver and there is still no
improvement. The one thing that I didn't mention before is that I have
in /etc/modprobe.conf the following:
options nvidia NVreg_SoftEDIDs=0 NVreg_Mobile=0
as that is necessary to prevent a garbled screen. I know that the NVIDIA
driver readme says that NVreg_Mobile=1 is the correct setting for Dell
notebooks but that setting does not prevent the problem. I just went
back to the NVIDIA forum to check the details of that particular fix.
It's in this thread:
http://www.nvnews.net/vbulletin/showthread.php?t=40490
and in this Livna bugzilla report:
http://bugzilla.livna.org/show_bug.cgi?id=320
Interestingly in this message in this related NVIDIA forums thread,
http://www.nvnews.net/vbulletin/showpost.php?p=566272&postcount=4
the NVreg_Mobile=0 fix is also reported to break DPMS. Time to nag
NVIDIA about this again, I guess. Anyway, I seem to have identified the
cause.
Best, Darren
--
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D. D. Brierton darren at dzr-web.com www.dzr-web.com
Trying is the first step towards failure (Homer Simpson)
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