Janis K wrote: > hello > > FC2 found my video cards as NVIDIA GeForce2 MX (generic) as it really is, > and I have SONY Trinitron Multiscan E230 monitor 17'' (during the > installation, FC2 recognized my monitor as SONY CPD E230), but FC2 Control > Center shows ONLY 85Hz @ 1024x768 - why it is so? > > on WinXP my monitor works with 100Hz @ 1024x768 > > how can I turn 100Hz @ 1024x768 on FC2? > For some reason, modes with higher refresh rates are not defined in the default X configuration. You need to add a ModeLine to your xorg.conf >From a terminal, run xvidtune Click "show" - a line of numbers will appear in the terminal The first number after "1024x768" is the "Pixel clock" in MHz. The formulas connecting the different frequencies are: Horizontal sync = Pixel clock / HTotal Vertical sync = Horizontal sync / VTotal Note: HTotal and VTotal are larger than the resolution of the screen, as indicated in xvidtune. You can work out what you should change the pixel clock to in order to obtain a 100Hz mode. Now open your /etc/X11/xorg.conf in an editor. Find the "Monitor" section and ensure that the specs for your monitor are correct - HorizSync (in KHz) and VertRefresh (in Hz) MUST be right, or you risk damaging your monitor. Check in the manual that they are correct. (I say this to cover myself - you edit xorg.conf at your own risk). Once you have done that, add an extra line in the Monitor section: Modeline "1152x864" 144.00 1152 1216 1344 1600 864 865 868 900 +hsync +vsync This is exactly the output from xvidtine with Modeline added to the beginning (this is my example, yours will be different for 1024x768). Now alter the pixel clock to the number you calculated. Restart X, and now you should have a higher refresh rate. Why they can't provide high refresh rate modes with X I don't know. Hope that helps, Jonathan
