Sorry. I check my conf file again, I found wayland has disabled by "/etc/gdm3/custom.conf". After I edit "WaylandEnable" parameter in "/etc/gdm3/custom.conf", the icon showed up on gdm3.
Sorry. custom. conf". custom. conf", the icon showed up on gdm3.
I check my conf file again, I found wayland has disabled by "/etc/gdm3/
After I edit "WaylandEnable" parameter in "/etc/gdm3/