Re: NVIDIA driver and DPMS: backlight never switches off

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On Wed, 2006-11-01 at 22:23 +0000, D. D. Brierton wrote:
> 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.

That's new to me!

I took a look at the docs, and based on what it says, the above driver
options are only necessary if the EDID provided by your monitor can't be
trusted or doesn't work.  However, I personally haven't experienced any
problems with the auto detection, so I leave the UseEdidFreqs at default
(true).

Are you sure that X doesn't automatically detect your LCD?

Actually, now that I think about it, EDID doesnt' quite work for me.  I
have to manually specify the HorizSync and VertRefresh numbers:

HorizSync       75.0 - 90.0
VertRefresh     60.0 - 60.0

After I do that, the rest works like a charm.

>  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.

What happens if you use the driver package from NVIDIA, and DON'T pass
the options to the nvidia driver?

Regards,

Ranbir

-- 
Kanwar Ranbir Sandhu
Linux 2.6.14-1.1653_FC4 i686 GNU/Linux 
18:38:22 up 11:38, 3 users, load average: 0.01, 0.13, 0.09 



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