After some investigation, the problem seems to be in the Xorg.wrap wrapper that is way too picky.
1) Without the wrapper Xdummy cannot be executed because it tries to open some virtual console and fails 2) With the wrapper Xdummy cannot be executed either because a) you need to modify the Xwrapper.conf file to let anybody run it first b) The wrapper protests that it cannot run with elevated privileges and options for Xorg including -logfile and -configdir, but these are obviously required if one wants to start Xdummy under the control of another application such as Xpra To me, it is totally unclear why: a) Xdummy should need to run with privilege at all otherwise Xorg messes with the virtual consoles. b) The wrapper cannot have its own options making it more flexible and a group to manage it, so that only the users with appropriate permissions (in the appropriate group) can start the wrapper with the options relaxing its behavior (e.g. allowing -logfile and -confdir) -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-dummy in Ubuntu. https://bugs.launchpad.net/bugs/1589447 Title: Xdummy cannot be used in Xenial To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-dummy/+bug/1589447/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
