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9500gt hdtv output problem

L

ltcdata

Weaksauce
Joined
Aug 14, 2001
Messages
110
Hi!
I have a problem with my Geforce 9500GT card, specially with the tv output.
I have a LG 42LH30 tv set.

I was toying with the video output to test different videos, etc.

Automatically detected in the nvidia output panel for the hdmi connection were:

1080i NATIVE
1080p Recommended

1080i were 1920x1080, 60hz, 32-bit color.
1080p were 1920x1080, 24hz, 32-bit color.

I used the extend function of dual-view, and i was able to choose between 1080p and 1080i on the nvidia control panel, leaving my pc panel at 1680x1080 (connected via vga), allowing me to display 24p movies and 60fps interlaced material without judder and artifacts on the tv.

Toying with the settings i deleted accidentaly the 1080i res.

Now i only have 1080p 24hz in dual view for the tv.
If i try to put it to 60hz, it goes to 8-bit color depth. Putting it in 32-bit color takes the scan frequency back to 24hz.

If i put the dualview off, and output only to the LCD tv, i can put it in 1080p 60hz 32-bit with no problem, but loosing my multitasking ability (i use to display the usb TDT receiver no the 2nd screen for example).

I tried removing drivers, cleaning registry, everything, but when in dual-view extend desktop mode, the only option i have is 1080p/24.
If i try to create a custom resolution with 1080i 60hz, when i try to select "interlaced" it instantly goes back to progressive.

For playing games is no problem, nview dualview disabled, only one display and output to hdtv: 1080p/60hz and the games run ok.

But for anything that is not displaying movies un 24fps, nview in dualview at 1080p/24 is unusable, the mouse cursor jitters, videos at 30fps and interlaced videos look bad, etc.

Im running latest 197.45 driver.

What can i do?
Thanks in advance!!
Gonzalo
 
If you can't find a way to add the resolution back in in the nVidia control panel you could try deleting the monitor from your Device Manager, if that fails you can use Powerstrip to remove the cached EDID/rescan the television's EDID or use regedit and search for '42LH30' and remove the cached EDID, might also search for the serial number Powerstrip shows for the monitor if you do it this way.


I believe the relevant sections in the registry that might help by deleting are the display config in HKLM\SYSTEM\CurrentControlSet\Control\GraphicsDrivers\Configuration and probably the display entry in HKLM\SYSTEM\CurrentControlSet\Enum\Display
 
Thanks for the answers.
I swapped hdd's and reinstalled.... the option reappeared.
I went back to my original instalation, i did not want to reinstall all again... after breaking my head for a few hours i was able to get back that option:
If you run the "multiple monitors wizard", it automatically gives you back the 1080i output. It was that simple. I deinstalled and reinstalled the monitor in the device manager, but did not need to remove the keys in the registry.

Another thing that breaks my head is this:
I can only output 1080p/24 and 1080i/60.
This is no problem because bluray movies are at 24fps.
But for gaming is another story.
If i use the 1080p/24 (it shows 24hz) as the output mode for the hdtv, obviously the motion is not fluid.
And if i run it at 1080i/60, i'm losing resolution, as you know, 1080i has the same resolution as 720p.
If i try to put 1080p/60, the nvidia card reverts to 8 bit. The only way to display 32bit color is to use 1080p/24.

I know my tv set (42LH30 from LG) can display 1080p/60. The question is: is the limiting factor the nvidia card? With every driver they release, they always fix something and breaks another regarding hdtv output and resolutions.

I will try another hdmi cable, and see if a friend of mine lends me another card to try (very improbable).

Do you have any suggestion on this?
Thanks!
 
If it helps anybody, i'll post an intermediate solution:
After fiddling a lot in forums, i found a "solution":
Install little older drivers, 196.21.
Some people have problem with the levels of the hdmi output of this driver (wrong levels, 0-255 instead of 16-235, so they get crushed blacks).
I have no problem (xp), and with this driver version i am able to chose between 1080p60, 1080p50 and 1080p24.
Hope this helps anybody till nvidia fixes the new drivers.
 
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