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Description No error shows when launch virt-manager from host via ssh without X forwarding Version: virt-manager-0.10.0-7.el7.noarch How reproducible: 100% Steps to Reproduce: 1. Install virt-manager 2. Connect to a remote host via ssh without X forwarding # ssh root@$ip 3. Execute virt-manager,no error shows and virt-manager is not launched. # virt-manager When add --debug option,the info shows as: # virt-manager --debug 2013-12-05 15:58:51,543 (cliutils:75): virt-manager startup 2013-12-05 15:58:51,543 (virt-manager:201): Launched as: ['/usr/share/virt-manager/virt-manager', '--debug'] 2013-12-05 15:58:51,544 (virt-manager:202): virt-manager version: 0.10.0 2013-12-05 15:58:51,544 (virt-manager:203): virtManager import: <module 'virtManager' from '/usr/share/virt-manager/virtManager/__init__.pyc'> 2013-12-05 15:58:51,693 (virt-manager:249): GTK version: 3.8.4 (virt-manager:22170): Gtk-CRITICAL **: gtk_icon_theme_get_for_screen: assertion `GDK_IS_SCREEN (screen)' failed 2013-12-05 15:58:51,699 (virt-manager:55): Error starting virt-manager Traceback (most recent call last): File "/usr/share/virt-manager/virt-manager", line 308, in <module> main() File "/usr/share/virt-manager/virt-manager", line 270, in main icon_theme.prepend_search_path(cliconfig.icon_dir) AttributeError: 'NoneType' object has no attribute 'prepend_search_path' 2013-12-05 15:58:51,718 (cliutils:87): Uncaught exception: Traceback (most recent call last): File "/usr/share/virt-manager/virt-manager", line 316, in <module> _show_startup_error(str(run_e), "".join(traceback.format_exc())) File "/usr/share/virt-manager/virt-manager", line 63, in _show_startup_error debug=False) File "/usr/share/virt-manager/virtManager/error.py", line 86, in show_err buttons=buttons) File "/usr/share/virt-manager/virtManager/error.py", line 189, in __init__ Gtk.MessageDialog.__init__(self, *args, **kwargs) File "/usr/lib64/python2.7/site-packages/gi/overrides/Gtk.py", line 519, in __init__ **kwds) File "/usr/lib64/python2.7/site-packages/gi/overrides/Gtk.py", line 446, in __init__ Gtk.Dialog.__init__(self, **kwds) File "/usr/lib64/python2.7/site-packages/gi/overrides/Gtk.py", line 416, in __init__ raise RuntimeError("Gtk couldn't be initialized") RuntimeError: Gtk couldn't be initialized Traceback (most recent call last): File "/usr/share/virt-manager/virt-manager", line 316, in <module> _show_startup_error(str(run_e), "".join(traceback.format_exc())) File "/usr/share/virt-manager/virt-manager", line 63, in _show_startup_error debug=False) File "/usr/share/virt-manager/virtManager/error.py", line 86, in show_err buttons=buttons) File "/usr/share/virt-manager/virtManager/error.py", line 189, in __init__ Gtk.MessageDialog.__init__(self, *args, **kwargs) File "/usr/lib64/python2.7/site-packages/gi/overrides/Gtk.py", line 519, in __init__ **kwds) File "/usr/lib64/python2.7/site-packages/gi/overrides/Gtk.py", line 446, in __init__ Gtk.Dialog.__init__(self, **kwds) File "/usr/lib64/python2.7/site-packages/gi/overrides/Gtk.py", line 416, in __init__ raise RuntimeError("Gtk couldn't be initialized") RuntimeError: Gtk couldn't be initialized Actual results： As step 3 describes. Expected results: A user friendly error message shows,eg:"There is no display available to execute virt-manager. DISPLAY is not set." Additional info: The issue can not be reproduced on rhel 6, and there is bug 1025706 on rhel 6 to ask for a more friendly error message.
I retest this issue with build virt-manager-0.10.0-8.el7: Currently, following error will display: -------------------------------------------- Gtk couldn't be initialized: Could not open display: -------------------------------------------- Need info for 2 points for your patch: 1. The command line will hang after Error display, and the user need press "Enter" to go back command line; 2. Is the Colon at the end after word "display" necessary? Thanks.
According comment3, change the bug status to assigned. Giuseppe, would you please have a check for the needinfo?
1. cannot be changed (at least not so easily to accept it at a so late stage), virt-manager forks another process before open the display and the forked process will display that message. 2 can be fixed, the last part should be showed only when DISPLAY is set.
Verified the bug based on the following steps: # rpm -qa virt-manager virt-manager-0.10.0-11.el7.noarch # virt-manager --no-fork ** (virt-manager:2740): WARNING **: Could not open X display Gtk couldn't be initialized
This request was resolved in Red Hat Enterprise Linux 7.0. Contact your manager or support representative in case you have further questions about the request.