Crash on Linux Mint 17.2

Target Platforms Desktop
,
1

I’m a relatively new Linux user and would greatly appreciate any help making sense of the following error messages.

I installed Unity using the shell script, after first installing all listed dependencies. I’m running Linux Mint 17.2 on a 64-bit laptop with integrated graphics (lenovo thinkpad x220). The lack of graphics card may well be the issue, but I’d like any insight the community can provide :).

The following error messages are generated immediately upon running “./unity-editor-5.1.0f3/Editor/Unity”

(process:2825): GLib-GObject-WARNING **: invalid (NULL) pointer instance

(process:2825): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion ‘G_TYPE_CHECK_INSTANCE (instance)’ failed

(process:2825): Gtk-CRITICAL **: IA__gtk_settings_get_for_screen: assertion ‘GDK_IS_SCREEN (screen)’ failed

(process:2825): GLib-GObject-CRITICAL **: g_object_get: assertion ‘G_IS_OBJECT (object)’ failed

(process:2825): Gtk-CRITICAL **: IA__gtk_settings_get_for_screen: assertion ‘GDK_IS_SCREEN (screen)’ failed

(process:2825): GLib-GObject-CRITICAL **: g_object_get: assertion ‘G_IS_OBJECT (object)’ failed

(process:2825): Gtk-CRITICAL **: IA__gtk_settings_get_for_screen: assertion ‘GDK_IS_SCREEN (screen)’ failed

(process:2825): GLib-GObject-CRITICAL **: g_object_get: assertion ‘G_IS_OBJECT (object)’ failed

(process:2825): Gtk-WARNING **: Screen for GtkWindow not set; you must always set
a screen for a GtkWindow before using the window

(process:2825): Gdk-CRITICAL **: IA__gdk_pango_context_get_for_screen: assertion ‘GDK_IS_SCREEN (screen)’ failed

(process:2825): Pango-CRITICAL **: pango_context_set_font_description: assertion ‘context != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_context_set_base_dir: assertion ‘context != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_context_set_language: assertion ‘context != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_new: assertion ‘context != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_text: assertion ‘layout != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_attributes: assertion ‘layout != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_alignment: assertion ‘layout != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_ellipsize: assertion ‘PANGO_IS_LAYOUT (layout)’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_single_paragraph_mode: assertion ‘PANGO_IS_LAYOUT (layout)’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_width: assertion ‘layout != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_get_extents: assertion ‘layout != NULL’ failed

(process:2825): Gdk-CRITICAL **: IA__gdk_pango_context_get_for_screen: assertion ‘GDK_IS_SCREEN (screen)’ failed

(process:2825): Pango-CRITICAL **: pango_context_set_font_description: assertion ‘context != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_context_set_base_dir: assertion ‘context != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_context_set_language: assertion ‘context != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_new: assertion ‘context != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_text: assertion ‘layout != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_attributes: assertion ‘layout != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_alignment: assertion ‘layout != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_ellipsize: assertion ‘PANGO_IS_LAYOUT (layout)’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_single_paragraph_mode: assertion ‘PANGO_IS_LAYOUT (layout)’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_width: assertion ‘layout != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_get_extents: assertion ‘layout != NULL’ failed

(process:2825): Gdk-CRITICAL **: IA__gdk_pango_context_get_for_screen: assertion ‘GDK_IS_SCREEN (screen)’ failed

(process:2825): Pango-CRITICAL **: pango_context_set_font_description: assertion ‘context != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_context_set_base_dir: assertion ‘context != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_context_set_language: assertion ‘context != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_new: assertion ‘context != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_text: assertion ‘layout != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_attributes: assertion ‘layout != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_alignment: assertion ‘layout != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_ellipsize: assertion ‘PANGO_IS_LAYOUT (layout)’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_single_paragraph_mode: assertion ‘PANGO_IS_LAYOUT (layout)’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_width: assertion ‘layout != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_get_extents: assertion ‘layout != NULL’ failed

(process:2825): Gtk-CRITICAL **: IA__gtk_icon_theme_get_for_screen: assertion ‘GDK_IS_SCREEN (screen)’ failed

(process:2825): Gtk-CRITICAL **: IA__gtk_settings_get_for_screen: assertion ‘GDK_IS_SCREEN (screen)’ failed

(process:2825): Gtk-CRITICAL **: IA__gtk_icon_size_lookup_for_settings: assertion ‘GTK_IS_SETTINGS (settings)’ failed

(process:2825): Gtk-WARNING **: Invalid icon size 6

(process:2825): Gtk-CRITICAL **: IA__gtk_icon_theme_load_icon: assertion ‘GTK_IS_ICON_THEME (icon_theme)’ failed

(process:2825): Gtk-WARNING **: Error loading theme icon ‘dialog-information’ for stock:

(process:2825): Gtk-CRITICAL **: IA__gtk_icon_size_lookup_for_settings: assertion ‘GTK_IS_SETTINGS (settings)’ failed

(process:2825): Gtk-WARNING **: /build/gtk+2.0-3ongxb/gtk+2.0-2.24.23/gtk/gtkstyle.c:2358: invalid icon size ‘6’

(process:2825): Gtk-CRITICAL **: IA__gtk_style_render_icon: assertion ‘pixbuf != NULL’ failed

(process:2825): GLib-GObject-CRITICAL **: g_object_ref: assertion ‘G_IS_OBJECT (object)’ failed

(process:2825): Gdk-CRITICAL **: IA__gdk_pango_context_get_for_screen: assertion ‘GDK_IS_SCREEN (screen)’ failed

(process:2825): Pango-CRITICAL **: pango_context_set_font_description: assertion ‘context != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_context_set_base_dir: assertion ‘context != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_context_set_language: assertion ‘context != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_new: assertion ‘context != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_text: assertion ‘layout != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_alignment: assertion ‘layout != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_ellipsize: assertion ‘PANGO_IS_LAYOUT (layout)’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_single_paragraph_mode: assertion ‘PANGO_IS_LAYOUT (layout)’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_wrap: assertion ‘PANGO_IS_LAYOUT (layout)’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_width: assertion ‘layout != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_get_extents: assertion ‘layout != NULL’ failed

(process:2825): Gdk-CRITICAL **: IA__gdk_pango_context_get_for_screen: assertion ‘GDK_IS_SCREEN (screen)’ failed

(process:2825): Pango-CRITICAL **: pango_context_set_font_description: assertion ‘context != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_context_set_base_dir: assertion ‘context != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_context_set_language: assertion ‘context != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_new: assertion ‘context != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_text: assertion ‘layout != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_get_extents: assertion ‘layout != NULL’ failed

(process:2825): GLib-GObject-CRITICAL **: g_object_unref: assertion ‘G_IS_OBJECT (object)’ failed

(process:2825): Gdk-CRITICAL **: IA__gdk_screen_get_width: assertion ‘GDK_IS_SCREEN (screen)’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_width: assertion ‘layout != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_get_extents: assertion ‘layout != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_set_width: assertion ‘layout != NULL’ failed

(process:2825): Pango-CRITICAL **: pango_layout_get_extents: assertion ‘layout != NULL’ failed

(process:2825): Gdk-CRITICAL **: IA__gdk_screen_get_default_colormap: assertion ‘GDK_IS_SCREEN (screen)’ failed

(process:2825): Gdk-CRITICAL **: IA__gdk_colormap_get_visual: assertion ‘GDK_IS_COLORMAP (colormap)’ failed

(process:2825): Gdk-CRITICAL **: IA__gdk_screen_get_default_colormap: assertion ‘GDK_IS_SCREEN (screen)’ failed

(process:2825): Gdk-CRITICAL **: IA__gdk_screen_get_root_window: assertion ‘GDK_IS_SCREEN (screen)’ failed

(process:2825): Gdk-CRITICAL **: IA__gdk_screen_get_root_window: assertion ‘GDK_IS_SCREEN (screen)’ failed

(process:2825): Gdk-CRITICAL **: IA__gdk_window_new: assertion ‘GDK_IS_WINDOW (parent)’ failed
Segmentation fault

2

Looks like a conflict with your window manager/desktop environment as it mentions Pango and GDK… are you using a custom theme? that could stuff things, I would suggest trying a different (and cleanly installed) window manager (or DWM) and see if unity will start properly.

3

Hi, i also have Linux Mint 17.2
I installed Unity3d from the deb file here: Unity on Linux: Release Notes and Known Issues - Unity Engine - Unity Discussions

I just double clicked on the deb file, and it managed all the needed dependencies.
My old Dell laptop with Intel HD ran fine.