It's possible the problem is actually GTK (which sits between Mutter and the apps) only supporting integer scales.
** Tags added: focal ** Also affects: gtk+3.0 (Ubuntu) Importance: Undecided Status: New ** Tags added: xrandr-scaling ** Changed in: gtk+3.0 (Ubuntu) Importance: Undecided => Low ** Changed in: mutter (Ubuntu) Importance: Undecided => Low -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1895164 Title: Display scaling 150% causes Firefox and Chrome to return window.devicePixelRatio = 2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/1895164/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs