The corresponding scenario on mesa-kms seems to work OK:
$ sudo bin/mir_demo_server --window-manager system-compositor --display-config sidebyside --file /tmp/mir_socket --vt 1 --arw-file
$ bin/mir_demo_server --host /tmp/mir_socket --display-config clone --vt -1
$ bin/mir_demo_standalone_render_surfaces --no-file --display-config single --host /run/user/1000/mir_socket ^C
$ bin/mir_demo_client_egltriangle
The corresponding scenario on mesa-kms seems to work OK:
$ sudo bin/mir_demo_server --window-manager system-compositor --display-config sidebyside --file /tmp/mir_socket --vt 1 --arw-file
$ bin/mir_demo_server --host /tmp/mir_socket --display-config clone --vt -1
$ bin/mir_ demo_standalone _render_ surfaces --no-file --display-config single --host /run/user/ 1000/mir_ socket
^C
$ bin/mir_ demo_client_ egltriangle