When writing the documentation for setting up Android Virtual Devices (AVD) I started to go though the procedures from scratch on a clean machine. Some erros were found (start/stop didn't always work) and fixed. It was rather tricky to find a variable that had kept its value between calls - stupid me!!!
Anyhow, starting and stoping AVDs work fine now.
tm-vmm --start-client eGov-android-machine
tm-vmm --stop-client eGov-android-machine
Yes, it is the same syntax as for VBox (and qemu) devices :)