Start tileatlas Error in : can't open display "lxplus000.cern.ch:20.0", switching to batch mode... In case you run from a remote ssh session, reconnect with ssh -Y (const int)1001 Error in : can't open display "lxplus000.cern.ch:20.0", switching to batch mode... In case you run from a remote ssh session, reconnect with ssh -Y (const int)1001 Error in : can't open display "lxplus000.cern.ch:20.0", switching to batch mode... In case you run from a remote ssh session, reconnect with ssh -Y (const int)1001