On Thu, Nov 03, 2016 at 09:18:15PM -0400, Matthew Gabeler-Lee wrote: > I do run GNOME, and it works fine on my HiDPI screen there. > > Do you have some value set for layout.css.devPixelsPerPx, or is it the > default -1?
I do have it set, though restoring it to "-1.0" does not change anything with the widgets (it just makes the rendered content look really tiny, too). Interestingly, GTK2 sizes things reasonably even with "-1.0" (many versions back I set it manually, but apparently that is no longer necessary). So it seems like GTK2 figures out the DPI issues automatically, but GTK3 does not. > > I don't run GNOME, but I do have "dconf" installed. Tweaking > > "/org/gnome/desktop/interface/scaling-factor" (and text-scaling-factor) > > has no effect. > > In my GNOME environment, the first is 0 and the second is 1, and yet I get > proper sized stuff in HiDPI nonetheless. > > However, the gnome-tweak-tool shows the "Window scaling" as 2. Thanks for the input. I tried installing gnome-tweak-tool, but changing the settings had no effect (I imagine this is because I'm not running some other component, like the compositing window manager, that does the heavy lifting). I opened #843104 to to split this issue into its own bug. -Peff
