Hi Michael,
are any of the dpi options working on your system?
Changing DisplaySize definitely affects my dpi. With my correct settings DisplaySize 716 287 I get micha@Moehre:~> xdpyinfo | grep -n5 dot [...] 56-screen #0: 57- dimensions: 2560x1024 pixels (722x289 millimeters) 58: resolution: 90x90 dots per inch [...] With DisplaySize 700 260 its 56-screen #0: 57- dimensions: 2560x1024 pixels (707x260 millimeters) 58: resolution: 92x100 dots per inch Displayed font sizes change also, even if some fonts seem not to change a lot. Below, I attached Monitor section of my XF86Config. Looking at it, I think that the line Option "CalcAlgorithm" "CheckDesktopGeometry" is particularly interesting. I did not find any info on this neither on the XF86 man page, nor in the NVIDIA driver docs. Just try it, if it's not already set. BTW, I'm running XFree86 version 4.3.99.902, but I don't think it should make much difference to Xorg. Regards, Michael Section "Monitor" Option "CalcAlgorithm" "CheckDesktopGeometry" # DisplaySize 358 287 #mod for twinview: double horizontal size DisplaySize 716 287 HorizSync 31-64 Identifier "Monitor[0]" ModelName "1280X1024@60HZ" Option "DPMS" VendorName "--> VESA" VertRefresh 50-60 UseModes "Modes[0]" Gamma 1.25 1.05 1.35 # created by KGamma EndSection -- Michael Schmuker University of Frankfurt Chair of Cheminformatics