piro@makkuro:~$ lsb_release -rd
Description: Ubuntu 18.04.2 LTS
Release: 18.04
gnome-control-center doesn't display bluetooth adapter when run under i3: the panel only shows the text:
```
No Bluetooth Found
Plug in a dongle to use Bluetooth.
```
Adapters are correctly displayed if the same user connects with gnome. Other panels work correctly in i3.
Running the panel from command line, when the tab is selected, the following log is displayed:
```
piro@makkuro:~$ XDG_CURRENT_DESKTOP=ubuntu:GNOME gnome-control-center
(gnome-control-center:9355): GLib-CRITICAL **: 19:44:43.226: g_variant_get_type: assertion 'value != NULL' failed
(gnome-control-center:9355): GLib-CRITICAL **: 19:44:43.226: g_variant_type_is_subtype_of: assertion 'g_variant_type_check (type)' failed
(gnome-control-center:9355): GLib-CRITICAL **: 19:44:43.226: g_variant_get_boolean: assertion 'g_variant_is_of_type (value, G_VARIANT_TYPE_BOOLEAN)' failed
(gnome-control-center:9355): GLib-CRITICAL **: 19:44:43.226: g_variant_unref: assertion 'value != NULL' failed
(gnome-control-center:9355): GLib-CRITICAL **: 19:44:43.226: g_variant_get_type: assertion 'value != NULL' failed
(gnome-control-center:9355): GLib-CRITICAL **: 19:44:43.226: g_variant_type_is_subtype_of: assertion 'g_variant_type_check (type)' failed
(gnome-control-center:9355): GLib-CRITICAL **: 19:44:43.226: g_variant_get_boolean: assertion 'g_variant_is_of_type (value, G_VARIANT_TYPE_BOOLEAN)' failed
(gnome-control-center:9355): GLib-CRITICAL **: 19:44:43.226: g_variant_unref: assertion 'value != NULL' failed
(gnome-control-center:9355): GLib-CRITICAL **: 19:44:43.226: g_variant_get_type: assertion 'value != NULL' failed
(gnome-control-center:9355): GLib-CRITICAL **: 19:44:43.226: g_variant_type_is_subtype_of: assertion 'g_variant_type_check (type)' failed
(gnome-control-center:9355): GLib-CRITICAL **: 19:44:43.226: g_variant_get_boolean: assertion 'g_variant_is_of_type (value, G_VARIANT_TYPE_BOOLEAN)' failed
(gnome-control-center:9355): GLib-CRITICAL **: 19:44:43.226: g_variant_unref: assertion 'value != NULL' failed
(gnome-control-center:9355): GLib-CRITICAL **: 19:44:43.226: g_variant_get_type: assertion 'value != NULL' failed
(gnome-control-center:9355): GLib-CRITICAL **: 19:44:43.226: g_variant_type_is_subtype_of: assertion 'g_variant_type_check (type)' failed
(gnome-control-center:9355): GLib-CRITICAL **: 19:44:43.226: g_variant_get_boolean: assertion 'g_variant_is_of_type (value, G_VARIANT_TYPE_BOOLEAN)' failed
(gnome-control-center:9355): GLib-CRITICAL **: 19:44:43.226: g_variant_unref: assertion 'value != NULL' failed
```
other tabs don't display any message at critical level.
Note: bluetooth does work in the same session: cli commands and blueman-applet allow using Bluetooth in the same session no problem.