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-   -   Nvidia 8756 and refresh problem (http://www.nvnews.net/vbulletin/showthread.php?t=68815)

pepz 04-20-06 12:56 PM

Nvidia 8756 and refresh problem
 
3 Attachment(s)
since i've installed ubuntu 5.10 on my LCD screen, a SAMTRON 72v, i've got problems with refresh... i've set the VertRefresh at 56 ~ 75 Hz and horizsync at 31 ~ 81 kHz, like wrotten on monitor guide...
My screen resolution is: 1280 x 1024@75Hz, but on the guide table it is written that the optimal resolution is 1280 x 1024@60Hz
I send you my Xorg.0.log and my xorg.conf
How can i set the refresh at 60hz? In the gnome menu i've only 75hz option...
I've read this post: http://www.nvnews.net/vbulletin/show...3&postcount=18
and i've added this line to Monitor section
Code:

Modeline      "1280x1024_60"  135.00  1280 1296 1440 1688  1024 1025 1028 1066 +hsync +vsync
But it doesn't works...
Have i to install again the drivers?
Thanks
Bye
Peppe

whig 04-21-06 03:49 AM

Re: Nvidia 8756 and refresh problem
 
In your X conf change this

Code:

SubSection    "Display"
        Depth      24
        Modes      "1280x1024" "1024x768" "800x600" "640x480"
EndSubSection

to
Code:

SubSection    "Display"
        Depth      24
        Modes      "1280x1024_60" "1024x768_60" "800x600" "640x480"
EndSubSection


pepz 04-21-06 05:08 AM

Re: Nvidia 8756 and refresh problem
 
i've done what you said, but at 60hz, the images on the screen are worst, they are more choppy than 75hz mode.
What can i do?
I continue to have the choppy problem.
Sorry for my english, but i'm italian.
Bye
Peppe

whig 04-21-06 06:06 AM

Re: Nvidia 8756 and refresh problem
 
I know what you mean about low refresh rates. The screen flickers. Very annoying. I'm using 85Hz at the moment - the most I can do. I suggest leaving the settings at the most your screen can handle, don't go over it.

pepz 04-21-06 06:11 AM

Re: Nvidia 8756 and refresh problem
 
ok thanks, the most is 75hz, my actual configuration
bye
Peppe

pepz 04-21-06 10:15 AM

Re: Nvidia 8756 and refresh problem
 
i continue to have refresh problem...
what can i also modify in my xorg.conf?
i've read this: http://www.nvnews.net/vbulletin/show...9&postcount=36
so can i add nohoryzcheck and novertcheck option? and use an higher refresh rate?
Bye
Peppe

whig 04-21-06 09:45 PM

Re: Nvidia 8756 and refresh problem
 
You will need to look at your X log to see what is going on. It's in /var/log/. if it still gives you grief attach a nvidia bug report here.

pepz 04-22-06 05:13 AM

Re: Nvidia 8756 and refresh problem
 
2 Attachment(s)
ok here you are the logs.
thanks
peppe

whig 04-22-06 05:33 AM

Re: Nvidia 8756 and refresh problem
 
I'm unsure but you could try commented out these lines from your X conf.

Code:

Option        "UseEdidFreqs"        "FALSE"
Option        "UseEDID"              "FALSE"
Option        "ModeValidation"      "NoEdidModes"


houxiang zhu 04-22-06 10:08 AM

Re: Nvidia 8756 and refresh problem
 
In the begining, I have trouble with nvidia&FC5 , screen black. Then I installed the nvidia8756 driver, but it can't startx X. then I removed /etc/X11/xorg.conf, now it works, X started!

pepz 04-22-06 01:33 PM

Re: Nvidia 8756 and refresh problem
 
whig, i don't understand...
i must comment that lines?
bye
peppe

whig 04-22-06 09:33 PM

Re: Nvidia 8756 and refresh problem
 
Simply put a # character at the start of the line. It turns the line into a comment and not something for the computer to process.


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