Hi folks!

We have a proposed F32 blocker bug:

https://bugzilla.redhat.com/show_bug.cgi?id=1809717

which reports issues with 4K displays when using X11 (not Wayland). Initial indications suggest this may be specific to AMD graphics adapters: the reporter has an AMD adapter, and a couple of our team in Brno have been able to reproduce issues on an AMD adapter but not an Intel adapter. It's also suggested that the issue might actually be in display scaling (which is used on small high-resolution displays by default, hence the association with 4K, but can be enabled on any display for testing).

So, to help us figure out the shape of this bug, can we ask folks to test on whatever hardware you have available? The actual bug is that only 1/2 or 1/4 of the display is lit up, the rest of it is black, like in this image: https://bugzilla.redhat.com/attachment.cgi?id=1667282

1. Run a GNOME-on-Wayland session, and see if the bug happens: 1. a) out-of-the-box 1. b) with display scaling manually enabled if it was not auto-enabled (go to 'Displays' and change the 'Scale' setting to 200% if it is at 100% by default; you may have to log out and back in after changing the setting, not sure)

2. Run a GNOME-on-X11 session, and see if the bug happens: 2. a) out-of-the-box 2. b) with display scaling manually enabled if it was not auto-enabled (go to 'Displays' and change the 'Scale' setting to 200% if it is at 100% by default; you may have to log out and back in after changing the setting, not sure)

3. Run a KDE-on-X11 session, and see if the bug happens: 3. a) out-of-the-box 3. b) with display scaling manually enabled if it was not auto- enabled (go to 'Display Configuration' and change 'Global scale' to 200% , then log out and back in)

Please report back your results with info on the graphics card and display used for testing. If you do hit the bug, you can also add a comment to the bug report noting which configuration(s) produced the bug and including the same info on the graphics card and display used. Thanks very much!