On Tuesday 04 February 2003 03:13, Dhruba Bandopadhyay wrote: > Hello, > > Here is the output of 'grep WW /var/log/XFree86.0.log'. > > **** > (WW) warning, (EE) error, (NI) not implemented, (??) unknown. > (WW) Open APM failed (/dev/apm_bios) (No such file or directory) > (WW) (1600x1200,Monitor0) mode clock 162MHz exceeds DDC maximum 140MHz > **** > > Now, I have ACPI instead of APM on my machine so there's not much I can do > about the first warning. However, I'd like to ask how I can deal with the > second warning. I use a 17" flat panel (Dell E171FP) which has the > following maximum values. > > Resolution 1280x1024 (60Hz optimal; 75Hz max) > Mode clock 135 >
A 1600x1200 mode is pointless with a 1280x1024 flat panel. It cannot display more. Flatpanels work different from CRT tubes. They only have one resolution. The smart ones can do zooming (mapping other resolutions on their own resolution). Also if your display says 60Hz optimal give it 60Hz, else your display will "smartly" downgrade or show lines. 60Hz frequency on flatpanels is very good, they are not CRT tubes. The above error means that 162,000,00 "pixels" per second get written to the display. Your display can only cope with 140,000,000 "pixels" per second. The "pixels" here include offscreen synchronization space. For a line of 1280 pixels wide you need at least about 1450 "pixels". For flatpanels the only thing interesting is how fast the videocard clock is. As long as it exceeds the flatpanel natural resolution plus frequency (which it of course can handle) you can display on it. Normally with any decent videocard this is no problem at all. Paul -- Paul de Vrieze Researcher Mail: [EMAIL PROTECTED] Homepage: http://www.cs.kun.nl/~pauldv
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