Comment 16 for bug 1509075

Fixed rootless too:
https://git.launchpad.net/~xmir-team/xorg-server/+git/xmir/commit/?id=cb043eb35dbd2a8c418f328396b882be31de4cab

Warning:
Now the bug is fixed you're still going to see some (significant but no longer absurd) font size differences between apps because the apps themselves are actually quite different. Gimp and Firefox honour the screen DPI and will scale up for the phone screen (less so than before the bug was fixed). However other simpler GTK apps don't bother and will appear very small still. This is down to the apps themselves being well written for high-DPI or not.

If in doubt, check 'xdpyinfo' to see what the physical screen dimensions being reported by Xmir are.