This is driving me nuts - I've been through all the sites online about this subject but nothing seems to work. I tried changing my dpi in /etc/kde3/kdm/Xservers to 80, but when I run xdpyinfo | grep resolution, it reports that the resolution is still 75x75dpi. I tried creating a .serverrc file in my home directory with startx -- -dpi 100 as its content (chose a bigger number to make changes more visibly obvious), but that doesn't do anything either. Where the hell is it getting the 75x75 from???

Weirder still, if I open the font settings in the gnome control panel all the fonts in GTK windows (I run KDE) suddenly get a little larger and stay that way for the rest of the session. I'd have to do that every time I restarted to fix the GTK apps.

I'm running Mepis, which is based on Debian.

Anyone know how I can get this fixed?

Iif you are trying to get unified fonts and appearance for gnome and kde applications, you should try installing gtk2-engines-gtk-qt. It is available in Debian unstable, just make sure you have Debian unstable repositories in /etc/apt/sources.list, then do: After installing, open the KDE control center and select "Appearance and Themes". You should now see an entry called "GTK Styles and Fonts". Make sure to select "Use another style > Qt" and "Use my KDE fonts in GTK Applications". You can then test it by opening a GTK application like Firefox, Gimp, or Openoffice. The user interface fonts and menus should look similar to those in your KDE applications. The settings should stay upon reboot, so you don't need to go into Kcontrol each time.

That worked - Thanks!!!!!! Wonder why that isn't mentioned on any of the font tutorials?

Now the problem I've got is that Arial 10pt looks smaller in all Linux apps than it does under Windows. I presume this is related to the DPI setting? How can I fix that? My goal here is to make it so that web pages I develop in Windows will look the same in Firefox for Linux and vice versa. Currently, my linux fonts are all a bit smaller, which is causing me problems with things wrapping in Windows but having extra space in Linux.