> There's a neat GTK+ debugging thing called the GtkInspector which you > can launch from any GTK+ 3 app with shift+ctrl+D. From that you can
Or Ctrl+Shift+I, if you find that easier to remember (I as inspector) :-) > look at Properties then GtkSettings, and look at the gtk-xft-* > settings. I noticed two significant differences between anaconda > running from boot.iso or KDE live and anaconda running from Workstation > live, both at 1024x768 in a VM. gtk-xft-hintstyle is 'medium' in > Workstation but 'full' in boot.iso/KDE, and gtk-xft-dpi is 98304 in > Workstation but 98401 in boot.iso/KDE. That value is a DPI multiplied > by 1024; Workstation's is exactly 96 (98304/1024 = 96), boot.iso/KDE > is...a little bit more than 96. > > Basically we figured out that for some reason the defaults that should > be set by /etc/X11/Xresources don't seem to actually be merged into X, > in boot.iso and KDE live image at least. So GDK (part of GTK+) falls > back on its internal defaults for hinting style and display resolution > (DPI). Its default for hinting style, in the absence of any external > indication, is 'hintfull', and its default for DPI is to actually > calculate the 'correct' DPI for the display. It turns out that a KVM at > 1024x768 reports its "monitor's" vertical size as 203mm; if you > reproduce GDK's calculation with 768 pixels and 203mm: > > 768 (pixel height) * 25.4 (inches to MM) / 203 (height in MM) * 1024 > (GDK's multiplication factor) ~= 98401 (actually a bit lower but it > gets rounded to the nearest integer) > > and that's where the weird 98401 value comes from. What, that's a one hell of a debug story. Awesome job. _______________________________________________ qa-devel mailing list qa-devel@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/qa-devel
