When test monitor/VGA test, unplug DVI and plug VGA, plainbox gui disappear. After few minutes, system show checkbox-gui crash message.
steps to reproduce
1. run plainbox stella-client monitor/VGA
plainbox version
ii plainbox 0.6~dev+bzr3012+pkg4~ubuntu14.04.1 all toolkit for software and hardware integration testing
ii plainbox-insecure-policy 0.6~dev+bzr3012+pkg4~ubuntu14.04.1 all policykit policy required to use plainbox (insecure version)
ii plainbox-provider-checkbox 0.5~dev+bzr3011+pkg5~ubuntu14.04.1 amd64 CheckBox provider for PlainBox
ii plainbox-provider-oem 0.1ubuntu7 all plainbox oem provider
ii plainbox-provider-oem-stella 0.1ubuntu7 all plainbox oem provider for stella
ii plainbox-provider-resource-generic 0.3-1 amd64 CheckBox generic resource jobs provider
ii python3-plainbox 0.6~dev+bzr3012+pkg4~ubuntu14.04.1 all toolkit for software and hardware testing (python3 module)
