GLib-Critical errors in Ubuntu 18.04

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I'm having a lot of trouble after upgrading to 18.04. Certain GUI applications that use the GTK library are failing to start, throwing the error:



GLib-GObject-WARNING **: 03:16:28.378: cannot register existing type 'GdkDisplayManager'

GLib-CRITICAL **: 03:16:28.378: g_once_init_leave: assertion 'result != 0' failed

GLib-GObject-CRITICAL **: 03:16:28.378: g_object_new_with_properties: assertion 'G_TYPE_IS_OBJECT (object_type)' failed


I went to test out if I could get GTK apps to work in python and that also fails. Trying the simple example scripts from the official GTK tutorial leads to import failures, particularly:



File "test.py", line 1, in <module>
import gi
ModuleNotFoundError: No module named 'gi'`


I've tried to reinstall all the appropriate packages to no avail:



sudo apt install --reinstall python-gi python-gi-cairo python3-gi python3-gi-cairo gir1.2-gtk-3.0






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  • »» import gi «« : No "gi" → packages.ubuntu.com/bionic/amd64/python-gi/filelist ... But you can use e.g. from gi.repository import Gtk (example from the file GUI_Main.py : app-name = APP-Tool.)
    – Knud Larsen
    May 16 at 13:27














up vote
0
down vote

favorite












I'm having a lot of trouble after upgrading to 18.04. Certain GUI applications that use the GTK library are failing to start, throwing the error:



GLib-GObject-WARNING **: 03:16:28.378: cannot register existing type 'GdkDisplayManager'

GLib-CRITICAL **: 03:16:28.378: g_once_init_leave: assertion 'result != 0' failed

GLib-GObject-CRITICAL **: 03:16:28.378: g_object_new_with_properties: assertion 'G_TYPE_IS_OBJECT (object_type)' failed


I went to test out if I could get GTK apps to work in python and that also fails. Trying the simple example scripts from the official GTK tutorial leads to import failures, particularly:



File "test.py", line 1, in <module>
import gi
ModuleNotFoundError: No module named 'gi'`


I've tried to reinstall all the appropriate packages to no avail:



sudo apt install --reinstall python-gi python-gi-cairo python3-gi python3-gi-cairo gir1.2-gtk-3.0






share|improve this question






















  • »» import gi «« : No "gi" → packages.ubuntu.com/bionic/amd64/python-gi/filelist ... But you can use e.g. from gi.repository import Gtk (example from the file GUI_Main.py : app-name = APP-Tool.)
    – Knud Larsen
    May 16 at 13:27












up vote
0
down vote

favorite









up vote
0
down vote

favorite











I'm having a lot of trouble after upgrading to 18.04. Certain GUI applications that use the GTK library are failing to start, throwing the error:



GLib-GObject-WARNING **: 03:16:28.378: cannot register existing type 'GdkDisplayManager'

GLib-CRITICAL **: 03:16:28.378: g_once_init_leave: assertion 'result != 0' failed

GLib-GObject-CRITICAL **: 03:16:28.378: g_object_new_with_properties: assertion 'G_TYPE_IS_OBJECT (object_type)' failed


I went to test out if I could get GTK apps to work in python and that also fails. Trying the simple example scripts from the official GTK tutorial leads to import failures, particularly:



File "test.py", line 1, in <module>
import gi
ModuleNotFoundError: No module named 'gi'`


I've tried to reinstall all the appropriate packages to no avail:



sudo apt install --reinstall python-gi python-gi-cairo python3-gi python3-gi-cairo gir1.2-gtk-3.0






share|improve this question














I'm having a lot of trouble after upgrading to 18.04. Certain GUI applications that use the GTK library are failing to start, throwing the error:



GLib-GObject-WARNING **: 03:16:28.378: cannot register existing type 'GdkDisplayManager'

GLib-CRITICAL **: 03:16:28.378: g_once_init_leave: assertion 'result != 0' failed

GLib-GObject-CRITICAL **: 03:16:28.378: g_object_new_with_properties: assertion 'G_TYPE_IS_OBJECT (object_type)' failed


I went to test out if I could get GTK apps to work in python and that also fails. Trying the simple example scripts from the official GTK tutorial leads to import failures, particularly:



File "test.py", line 1, in <module>
import gi
ModuleNotFoundError: No module named 'gi'`


I've tried to reinstall all the appropriate packages to no avail:



sudo apt install --reinstall python-gi python-gi-cairo python3-gi python3-gi-cairo gir1.2-gtk-3.0








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edited May 16 at 7:34









muru

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asked May 16 at 7:20









Astrum

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  • »» import gi «« : No "gi" → packages.ubuntu.com/bionic/amd64/python-gi/filelist ... But you can use e.g. from gi.repository import Gtk (example from the file GUI_Main.py : app-name = APP-Tool.)
    – Knud Larsen
    May 16 at 13:27
















  • »» import gi «« : No "gi" → packages.ubuntu.com/bionic/amd64/python-gi/filelist ... But you can use e.g. from gi.repository import Gtk (example from the file GUI_Main.py : app-name = APP-Tool.)
    – Knud Larsen
    May 16 at 13:27















»» import gi «« : No "gi" → packages.ubuntu.com/bionic/amd64/python-gi/filelist ... But you can use e.g. from gi.repository import Gtk (example from the file GUI_Main.py : app-name = APP-Tool.)
– Knud Larsen
May 16 at 13:27




»» import gi «« : No "gi" → packages.ubuntu.com/bionic/amd64/python-gi/filelist ... But you can use e.g. from gi.repository import Gtk (example from the file GUI_Main.py : app-name = APP-Tool.)
– Knud Larsen
May 16 at 13:27















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