Thank you for helping to triage and sorry for the late response. I no longer have as much time for Launchpad as I used to.
Here are the last few lines from journalctl. I hope they mean something to you. Mar 23 03:26:35 work sudo[22956]: pam_unix(sudo:session): session closed for user root Mar 23 03:27:00 work unity-scope-loa[10494]: daemon.vala:679: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.zeitgeist.Engine was not provided by any .service files Mar 23 03:27:05 work compiz[2115]: ERROR 2019-03-23 03:27:05 unityfree <unknown>:0 g_sequence_get: assertion '!is_end (iter)' failed Mar 23 03:27:05 work compiz[2115]: ERROR 2019-03-23 03:27:05 unity null <unknown>:0 Unable to get value. NULL row data in DeeSequenceModel@0x562b2e019ea0 at position 1. The row has probably been removed Mar 23 03:27:05 work compiz[2115]: ERROR 2019-03-23 03:27:05 unity null <unknown>:0 Unable to get string. Column 5 in DeeSequenceModel@0x562b2e019ea0 holds a NULL value in row 1 Mar 23 03:27:11 work gnome-control-c[22988]: g_variant_get_type: assertion 'value != NULL' failed Mar 23 03:27:11 work gnome-control-c[22988]: g_variant_type_is_subtype_of: assertion 'g_variant_type_check (type)' failed Mar 23 03:27:11 work gnome-control-c[22988]: g_variant_get_boolean: assertion 'g_variant_is_of_type (value, G_VARIANT_TYPE_BOOLEAN)' failed Mar 23 03:27:11 work gnome-control-c[22988]: g_variant_unref: assertion 'value != NULL' failed Mar 23 03:27:11 work gnome-control-c[22988]: g_variant_get_type: assertion 'value != NULL' failed Mar 23 03:27:11 work gnome-control-c[22988]: g_variant_type_is_subtype_of: assertion 'g_variant_type_check (type)' failed Mar 23 03:27:11 work gnome-control-c[22988]: g_variant_get_boolean: assertion 'g_variant_is_of_type (value, G_VARIANT_TYPE_BOOLEAN)' failed Mar 23 03:27:11 work gnome-control-c[22988]: g_variant_unref: assertion 'value != NULL' failed Mar 23 03:27:11 work gnome-control-c[22988]: g_variant_get_type: assertion 'value != NULL' failed Mar 23 03:27:11 work gnome-control-c[22988]: g_variant_type_is_subtype_of: assertion 'g_variant_type_check (type)' failed Mar 23 03:27:11 work gnome-control-c[22988]: g_variant_get_boolean: assertion 'g_variant_is_of_type (value, G_VARIANT_TYPE_BOOLEAN)' failed Mar 23 03:27:11 work gnome-control-c[22988]: g_variant_unref: assertion 'value != NULL' failed Mar 23 03:27:11 work gnome-control-c[22988]: g_variant_get_type: assertion 'value != NULL' failed Mar 23 03:27:11 work gnome-control-c[22988]: g_variant_type_is_subtype_of: assertion 'g_variant_type_check (type)' failed Mar 23 03:27:11 work gnome-control-c[22988]: g_variant_get_boolean: assertion 'g_variant_is_of_type (value, G_VARIANT_TYPE_BOOLEAN)' failed Mar 23 03:27:11 work gnome-control-c[22988]: g_variant_unref: assertion 'value != NULL' failed Mar 23 03:27:12 work kernel: Bluetooth: hci0: last event is not cmd complete (0x0f) And here is the CLI output you requested. $ G_DEBUG_MESSAGES=all gnome-control-center bluetooth (gnome-control-center:23143): GLib-CRITICAL **: 03:31:11.558: g_variant_get_type: assertion 'value != NULL' failed (gnome-control-center:23143): GLib-CRITICAL **: 03:31:11.558: g_variant_type_is_subtype_of: assertion 'g_variant_type_check (type)' failed (gnome-control-center:23143): GLib-CRITICAL **: 03:31:11.558: g_variant_get_boolean: assertion 'g_variant_is_of_type (value, G_VARIANT_TYPE_BOOLEAN)' failed (gnome-control-center:23143): GLib-CRITICAL **: 03:31:11.558: g_variant_unref: assertion 'value != NULL' failed (gnome-control-center:23143): GLib-CRITICAL **: 03:31:11.558: g_variant_get_type: assertion 'value != NULL' failed (gnome-control-center:23143): GLib-CRITICAL **: 03:31:11.558: g_variant_type_is_subtype_of: assertion 'g_variant_type_check (type)' failed (gnome-control-center:23143): GLib-CRITICAL **: 03:31:11.559: g_variant_get_boolean: assertion 'g_variant_is_of_type (value, G_VARIANT_TYPE_BOOLEAN)' failed (gnome-control-center:23143): GLib-CRITICAL **: 03:31:11.559: g_variant_unref: assertion 'value != NULL' failed (gnome-control-center:23143): GLib-CRITICAL **: 03:31:11.559: g_variant_get_type: assertion 'value != NULL' failed (gnome-control-center:23143): GLib-CRITICAL **: 03:31:11.559: g_variant_type_is_subtype_of: assertion 'g_variant_type_check (type)' failed (gnome-control-center:23143): GLib-CRITICAL **: 03:31:11.559: g_variant_get_boolean: assertion 'g_variant_is_of_type (value, G_VARIANT_TYPE_BOOLEAN)' failed (gnome-control-center:23143): GLib-CRITICAL **: 03:31:11.559: g_variant_unref: assertion 'value != NULL' failed (gnome-control-center:23143): GLib-CRITICAL **: 03:31:11.559: g_variant_get_type: assertion 'value != NULL' failed (gnome-control-center:23143): GLib-CRITICAL **: 03:31:11.559: g_variant_type_is_subtype_of: assertion 'g_variant_type_check (type)' failed (gnome-control-center:23143): GLib-CRITICAL **: 03:31:11.559: g_variant_get_boolean: assertion 'g_variant_is_of_type (value, G_VARIANT_TYPE_BOOLEAN)' failed (gnome-control-center:23143): GLib-CRITICAL **: 03:31:11.559: g_variant_unref: assertion 'value != NULL' failed ** Changed in: gnome-control-center (Ubuntu) Status: Expired => New -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1776000 Title: gnome-control-center says "no bluetooth found" even though bluetooth is present and somewhat usable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1776000/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs