Comment #8 confirms this is a duplicate of bug 1968040.
Workaround: Add MUTTER_DEBUG_ENABLE_ATOMIC_KMS=0 to /etc/environment. Although you only need that while using Wayland sessions...
Comment #9 is being tracked in bug 1970291.
Workaround: Select a Xorg session on the login screen instead of Wayland.
Thanks.
Comment #8 confirms this is a duplicate of bug 1968040. DEBUG_ENABLE_ ATOMIC_ KMS=0 to /etc/environment. Although you only need that while using Wayland sessions...
Workaround: Add MUTTER_
Comment #9 is being tracked in bug 1970291.
Workaround: Select a Xorg session on the login screen instead of Wayland.