This just started happened today. Pretty recent fresh install with gnome 3.18, just ran a pacman Syu this morning. Restarted later in the day.
- Immediately after entering my password in LightDM I see the correct desktop wallpaper, but it fades to Gray within a second or so
- If I press the Super Key (Windows Key) that screen shows the correct desktop wallpaper.
- When I select Power Off it switches to the correct desktop wallpaper.
- If I switch to other virtual desktops, they are wrong (gray background).
I poked around in the tweak tool, didn’t see anything obvious. To clarify, the computer is functional, just the desktop wall paper is not showing. (This is not to be confused with the LightDM white/black/gray screen issues which prevent the desktop from working.) Suggestions on what might be causing this?