I get error when virt-manager try connect to guest system screen (After create or when I click on open). So virt-manager is unusable, because I can't see anything $ virt-manager --no-fork Gtk-Message: (for origin information, set GTK_DEBUG): failed to retrieve property `GtkTreeView::odd-row-color' of type `GdkColor' from rc file value "((GString*) 0x7f906f5e7120)" of type `GString' The program 'virt-manager.py' received an X Window System error. This probably reflects a bug in the program. The error was 'BadLength (poly request too large or internal Xlib length erro'. (Details: serial 3057 error_code 16 request_code 143 minor_code 17) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the --sync command line option to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.) $ virt-manager --sync --no-fork Usage: virt-manager.py [options] virt-manager.py: error: no such option: --sync
Please try $ LANG=C virt-manager --no-fork More details can be found in bug 459927. I think this is the same error. If so one of the bug reports can be closed as duplicate. Either this one because the other one has more details or the other one because this one is older.
*** This bug has been marked as a duplicate of bug 459927 ***