Hello. I updated to Firefox 4 today (normal emerge -uDN world after sync yesterday), and suddenly the fonts for the site rendering all became smaller. (The UI is still the same.) I made very sure that I did not change anything else, so it should be reproducible. Also, while all fonts have become smaller, those of Google and Wikipedia have become even smaller. I can barely read the results, and I have 120% eye-sight. And any changes in the settings (Bearbeiten → Einstellungen… → Inhalt → Schriftarten & Farben → Erweitert…) are ignored for those sites. Ctrl-+ works, but as pressing Ctrl-0 proves, the default is still buggy. What I expect, is that when setting the proper DPI in my system (I’ve done that, via xrandr), and I say e.g. 12pt font size, then the font should be exactly 12/72in (≈4.23333… mm). Reproducible: Always Steps to Reproduce: 0. Make sure you set your system’s display DPI correctly. E.g.: 0.1. Execute “xdpyinfo | grep dots” 0.2. Calculate the actual DPI by physically measuring the screen and dividing your resolution by that measurement. (Should result in the same for both height and width.) 0.3. Compare the results from 0.1 and 0.2. They must be the same. If not, use xrandr to fix it. 1. Click on the URL of this bug (a data url). 2. Measure the height of the X on your screen with a ruler. Actual Results: I measured nearly exactly 27 mm. Expected Results: It should be 42.333… mm (25.4∕72×120 or 120∕72×25.4) though.
(Since the URL is apparently not clickable, just copy and paste it into the URL bar. :)
Ok, apparenly the whole DPI setup is messed up: data:text/html,<html><body><div style="margin:1cm; padding:0; border: 0; background: #000; color: #FFF; width: 10cm; height: 1cm">This should be exactly 10 cm × 1cm</div></body></html> This is 9.1 cm wide. Again: With properly set DPI in the system. (Checked with “xdpyinfo | grep dots”)
please post `emerge --info` whenever you report a bug
While the DPI problem still exists, I found out that this was a separate problem, which already has been resolved.