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Old 08-03-07, 08:51 AM   #5
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Join Date: Apr 2006
Posts: 73
Default Re: 1680x1050 resolution?

Originally Posted by jphhughes
Whig thanks for the reply. I tried the DPI at 84 x84 and made no difference. In my xorg.0 log file it has an entry "(WW) NVIDIA(0): No valid modes for "1680x1050"; removing." Do you or anyone else know what this means beyond the obvious. Thanks
1680x1050@60Hz has a pixel clock beyond the FX5200 capabilities, AFAIK.
Since it requires around 146.00MHz against the 135.00MHz the card is designed to do.
There are some solutions, I actually run such a resolution on a FX5200.
One is to convince the driver to use exactly the timing you want, regardless of everything else. This might or might not work, depending on your luck. Eventually it might also be dangerous for the card LVDS driver.
Usually, options like "IgnoreClock" and/or "UseExactDVITimings" or whatever are they called (check the docs, I do not remember by hard) will do the trick.

The other solution is to use, if supported by the monitor, a reduced blanking modeline, like:

Modeline "1680x1050_60.00_rb" 119.00 1680 1728 1760 1840 1050 1053 1059 1080 +Hsync -VSync

Also in this case, probably, you'll need to convince the driver, but, if the monitor supports this, you'll run the card below 135.00MHz.

Final note, the 1680x1050 square pixels resolution is 16:10, not 16:9, if you watch movies this might be an important difference.

Hope this helps.
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