I am using a current Debian/Sid. With or without "anti-aliasing fonts "enabled, I cannot change fixed-width fonts from the control center. When I click "choose" in that category of the control center->look and feel->fonts, the screen garbles up, and will not allow me to do anything from the console (no crtl-alt-backspace, no crtl-alt-f1, etc.). I must ssh in from another machine and reboot with the shutdown -r command; then I get the same configuration back.
I can change the variable-width fonts just fine. I can also change to anti-aliasing fonts if I have an eligible font chosen beforehand. How can I clear up my fixed-width option ?