Dpi issues on high resolution screen, mainly XTerm

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http://www.linuxquestions.org – I recently bought a UX21A Zenbook and installed Slackware64-current. With a bit of tweaking, all the hardware works fine with the -current kernel, but the ultra-high 1920 x 1080 resolution (on an 11.6 inch screen) is causing me a bit of a headache in getting everything set up just right. I have changed the dpi through "defaultserverargs" in /usr/bin/startx, and though that makes it a lot better, I am still dealing with font problems in a few applications such as Firefox, Thunderbird, and xterm. In Firefox, basically I am getting inconsistent font sizes where the text below a form b (HowTos)