id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc,cpu,platform 3295,GRASS GIS fails to start without terminal,wenzeslaus,grass-dev@…,"On Ubuntu (16.04): * Do Ctrl+F2 (window to directly run commands - rather than desktop applications) * Type grass * Fill the startup screen * Start session * Start fails In 7.2 you get error about g.extension (#3253) and trunk you don't get anything (it fails later on). It is reproducible with nohup: {{{ nohup grass }}} Using `less nohup.out` you can get the output which mainly reveals: {{{ ERROR: Variable 'LOCATION_NAME' not set }}} followed by {{{ Traceback (most recent call last): File ""/usr/lib/grass72/gui/wxpython/wxgui.py"", line 158, in sys.exit(main()) File ""/usr/lib/grass72/gui/wxpython/wxgui.py"", line 145, in main app = GMApp(workspaceFile) File ""/usr/lib/grass72/gui/wxpython/wxgui.py"", line 48, in __init__ ... grass.exceptions.CalledModuleError: [it depends] Traceback (most recent call last): File ""/usr/lib/python2.7/atexit.py"", line 24, in _run_exitfuncs func(*targs, **kargs) PyAssertionError: C++ assertion ""GetEventHandler() == this"" failed at ../src/common/wincmn.cpp(478) in ~wxWindowBase(): any pushed event handlers must have been removed Error in sys.exitfunc: Traceback (most recent call last): File ""/usr/lib/python2.7/atexit.py"", line 24, in _run_exitfuncs func(*targs, **kargs) wx._core.PyAssertionError: C++ assertion ""GetEventHandler() == this"" failed at ../src/common/wincmn.cpp(478) in ~wxWindowBase(): any pushed event handlers must have been removed }}} Workaround which assumes you have some default mapset already: {{{ grass --exec g.gui }}} Answer to the ""What did you expect to happen?"" question: * GRASS GIS should start using this method as other applications do (e.g. QGIS or Gimp). Other possible improvements: * Message saying that the session is not started instead of ""Variable 'LOCATION_NAME' not set"" * Some temporary location generated for the case where there is not 'last location used' so that `grass --exec g.gui` (or `grass --tmp-loc --exec g.gui`) works on a fresh machine (it seems that the demolocation is not part of the Ubuntu distribution) * The above point and code packed into just `grass`. This comes to the discussion about role of location at startup from different side. However, it is pretty far from the core of this ticket which deals with GRASS GIS running without terminal.",defect,closed,normal,8.0.0,Startup,unspecified,fixed,"gisset, wxGUI, init, grass.py, nohup, terminal, shell, GUI, CLI, exec, g.gui",,Unspecified,Linux