[mythtv-users] Brightness on nVidia FX6200 TC

[Michael T. Dean]

On 02/14/2007 03:58 AM, junk wrote:
> Trey Thompson wrote:
>   
>>> I can't adjust my brightness.  DVDs as well as shows play too dark.
>>>
>>> I changed the BoardName option in xorg.conf to be the result of an
>>> lspci, which is "nVidia Corporation GeForce 6200 TurboCache(TM) (rev
>>> a1)".
>>>
>>> I also reviewed posts about similar behavior, which is when I try to
>>> adjust any of the options on "Adjust Picture", it goes from whatever
>>> the preset value is (53% for brightness for example), to -1.
>> Any ideas?  I've tried updating the nvidia-graphics from ATRPMS, and I
>> still can't adjust brightness (or any other settings in "Adjust
>> Picture").  How can I troubleshoot it?
> I have similar hardware (I think - desktop with 6200 on motherboard). 
> The driver claims to support XV picture adjustments

And it does

>  but attempts to 
> change anything result in '-1' being displayed and no apparent change to 
> the picture.

Because the hardware (i.e. NVIDIA 6x00 series and above) doesn't support 
Xv picture controls

>  I'm also running SVN from around a month ago. I found on 
> Gentoo that using the absolute latest NVidia drivers improved the 
> default brightness from very very dark to slightly dark but I still do 
> not have working NV picture adjustment controls.

For now (until Myth supports the new approach NVIDIA is using), you'll 
have to use nvidia-settings utility to adjust your 
brightness/contrast/gamma/etc.  However, this approach will cause /all/ 
output--video /and/ graphics (i.e. even the MythTV UI and X and ...)--to 
be adjusted.

Mike