Like Darrin suggested try matching Modelines and Modes : On xorg.conf
Enable only this (comment the rest of the modellines) : Modeline "1680x1050_60.00" 147.14 1680 1784 1968 2256 1050 1051 1054 1087 -HSync +Vsync Modify the screen section : Section "Screen" Identifier "Screen0" Device "Card0" Monitor "Monitor0" DefaultDepth 24 SubSection "Display" Depth 24 Modes "1680x1050_60.00" EndSubSection EndSection Marius On 9/21/07, Genadijus Paleckis <[EMAIL PROTECTED]> wrote: > I have similar problem and it is still unresolved. My video card Intel > i810 and monitor is Samsung SyncMaster 226CW, I'm trying to use > 1680x1050 with no success. What I found is that I cannot force to use > 60Hz vertrefresh and card uses 75Hz instead. > > gtf's suggestion > boo$ gtf 1680 1050 60 > > # 1680x1050 @ 60.00 Hz (GTF) hsync: 65.22 kHz; pclk: 147.14 MHz > Modeline "1680x1050_60.00" 147.14 1680 1784 1968 2256 1050 1051 > 1054 1087 -HSync +Vsync > > xorg.conf's monitor and screen sections: > > Section "Monitor" > Identifier "Monitor0" > Option "DPMS" > > # from Xorg.0.log > HorizSync 30-81 > VertRefresh 56-75 > > # GTF suggestion > Modeline "1680x1050_1" 147.14 1680 1784 1968 2256 1050 1051 1054 > 1087 -HSync +Vsync > > # numbers from Xorg.0.log > ModeLine "1680x1050_2" 119.0 1680 1728 1760 1840 1050 1053 1059 > 1080 > EndSection > > Section "Screen" > Identifier "Screen0" > Device "Card0" > Monitor "Monitor0" > DefaultDepth 24 > SubSection "Display" > Depth 24 > Modes "1680x1050_1" "1680x1050_2" > EndSubSection > EndSection