1422709 - Scaling issues on mixed DPI screens on Wayland Gnome

Status: RESOLVED DUPLICATE of bug 1431337

(Core :: Widget: Gtk, defect, P3)

Description

[luis.pabon]

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:57.0) Gecko/20100101 Firefox/57.0
Build ID: 20171129230227

Steps to reproduce:

Ubuntu 17.10, FF 57, Wayland, 4k laptop display (main display) with a scaling of 2, 2k external displays.


Actual results:

I have a 4K laptop which I regularly connect to 1080 or 720p monitors. Firefox scales correctly on the HiDPI monitor, but looks twice as big on the lower DPI monitor.

Gnome will correctly scale other GTK applications according to the screen they're on.




Expected results:

Firefox should re-scale itself when moved from a HiDPI display to a lower DPI display as all other gnome applications do.

Comment 1

[luis.pabon]

Attachment: All screens screenshot

Below: 4k screen with file manager (for comparison) and normally looking FF
Above: screen is 2K and has file manager, Epiphany browser (both scale correctly), and Firefox looking 2x too big