Hello Team,
I have a certain issue regarding desktop wallpapers that only seems to occur when maximizing a window such as Steam on my leftmost, secondary monitor. I have a hunch that something thinks the desktop wallpaper should be invisible or covered up, so it's not drawing the image.
Anyway, video clip below and steps to repro:
- Have two monitors. In my instance, on a fresh install and the login screen, my rightmost monitor is assumed to be leftmost.
- Open Displays, swap their positions. Primary on right, secondary on left.
- Maximize window on leftmost monitor.
- Intermittently, issue will occur on primary monitor: apparent by dragging windows or seeing window drop shadows turn into a solid square of black. Desktop wallpaper fails to draw, leaving ghost images.
- Restore maximized window on left. Dragging a window over ghosted space often 'fixes' it, allowing the wallpaper to be redrawn under it.
Video:
I haven't been able to recreate the issue when using either a solid colour or a gradient as a background. It only seems to happen with images, so far.
RX 580, R5 2600, Ubuntu Mate 20.04 and 21.04 tested.
Things I have tried to hopefully narrow things down, with the issue still persisting:
- Purging both Kisak-mesa and Fresh-mate PPAs, reverting to the distro-standard ones.
- Setting refresh rates of both monitors to matching rates.
- Switching Primary monitor's Freesync option on and off, via monitor buttons and rebooting.
- Switching between Marco (no comp) and Marco (Adaptive comp).
Hopefully someone more knowledgeable than I has an idea of where to go from here. I really enjoy using this desktop, and this is the only snag I've hit with it. I'd rather help and keep enjoying it.
Cheers,
James