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Old 12-25-07, 08:18 AM   #1
japie
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Join Date: Jun 2005
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Default trouble with high res. on lcd tv

Hello,

I try to set up my GF4 on my JVC LCD TV at 1024x768 via the monitor port on the tv.
According to the manual the tv should support 640x480@V60H31.5 and 1024x768@V60H42 unfortunatly I keep getting:
No valid modes for "1024x768"; removing.
so I added:
Option "ConnectedMonitor" "CRT"
Option "UseDisplayDevice" "CRT"
Option "UseEdidFreqs" "False"
Option "UseEDID" "FALSE"

And got no valid mode for both resolutions and the driver defaults to 800x600 wich doesn't excist and therefore no picture.
How can I really force xorg to use only 1024x768@V60H42?
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Old 12-25-07, 11:29 AM   #2
pe1chl
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Default Re: trouble with high res. on lcd tv

By putting the line:
Modes "1024x768"
into the "display" subsection of your Screen section.
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Old 12-26-07, 02:10 AM   #3
japie
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Default Re: trouble with high res. on lcd tv

Merry christmas pe1chl (and the rest) and off-course Modes "1024x768" is in my display section, and I got HorizSync 42 and VertRefresh 60 in my Monitor section, dispite 1024x768 being the only res. in my config the driver will still do otherwise.
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Old 12-26-07, 02:45 AM   #4
zander
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Default Re: trouble with high res. on lcd tv

Please see http://www.nvnews.net/vbulletin/showthread.php?t=46678; please be sure to run X with -logverbose 6 prior to generating the nvidia-bug-report.log file.
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Old 12-26-07, 03:08 AM   #5
japie
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Default Re: trouble with high res. on lcd tv

Quote:
Originally Posted by zander
please be sure to run X with -logverbose 6 prior to generating the nvidia-bug-report.log file.
Is there any way I can add the verbose logging to my xorg config file?
The machine is a multimedia center based on freevo without keyboard attached and X is started by freevo itself...
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Old 12-26-07, 05:34 AM   #6
japie
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Default Re: trouble with high res. on lcd tv

I managed to add the verbose statement to my freevo start and found the following in the nvidia debug log:
(II) NVIDIA(0): Validating Mode "1024x768":
(II) NVIDIA(0): 1024 x 768 @ 60 Hz
(II) NVIDIA(0): Mode Source: X Server
(II) NVIDIA(0): Pixel Clock : 65.00 MHz
(II) NVIDIA(0): HRes, HSyncStart : 1024, 1048
(II) NVIDIA(0): HSyncEnd, HTotal : 1184, 1344
(II) NVIDIA(0): VRes, VSyncStart : 768, 771
(II) NVIDIA(0): VSyncEnd, VTotal : 777, 806
(II) NVIDIA(0): H/V Polarity : -/-
(WW) NVIDIA(0): Mode is rejected: HorizSync (48.4 kHz) out of range
(WW) NVIDIA(0): (42.000 kHz).

So I changed my 42 in to 48.4 and suddenly I got picture!!! (without blowing up my TV)
Thanks all for helping and lots of luck and fun in the next year!
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