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Description of problem:

When opening a screen cast or remote desktop session using org.gnome.Mutter APIs and the screen casted monitor is configured with scale higher than 1, the resulting image is corrupted.


How reproducible:


Steps to Reproduce:
1. Configure the host to use scale 2
2. Enable screen sharing
3. Connect using Vinagre from another computer

Actual results:

The image in Vinagre is not correct

Expected results:

The image in Vinagre should be correct

I believe this dup of https://bugzilla.redhat.com/1656788

*** Bug 1656788 has been marked as a duplicate of this bug. ***

(In reply to Tomas Pelka from comment #1)
> I believe this dup of https://bugzilla.redhat.com/1656788

You sure? The way the screen is "corrupted" is very different. In this case, it'll look like the screen is squeezed and duplicated horizontally (somewhat like as if it was mirrored).

Created attachment 1536691 [details]
screenshot

I'm afraid this is not fixed, see attached screenshot. Seems for scaling factor = 2 remote desktop shows split screen like there are two monitors.

mutter-3.28.3-17.el8.x86_64
gnome-remote-desktop-0.1.6-3.el8.x86_64

On the screenshot 
- left site VM with scale factor 2 over SPICE - original host I'm connectinf via vinagre
- right site vinagre connected to hostname:0

The reason was a accidental backport of 0001-wayland-enable-scale-monitor-framebuffer-by-default.patch as part of https://bugzilla.redhat.com/show_bug.cgi?id=1668883.

We should not enable that experimental feature as it is incomplete. Reverting it makes this issue go away again.

Verified with mutter-3.28.3-18.el8