Identify Bluetooth device and troubleshoot

Sorry for my silly questions as I am new to Manjaro

  1. how can I check do I have Bluetooth in my computer or not, I mean my laptop is capable to connect with Bluetooth headset or not

  2. I have another device that I was able to connect with Bluetooth that was window device now I have installed Manjaro but unable to connect with any Bluetooth device I have tried Bluetooth manager in start menu, but it’s just popup and vanished immediately

Try Menu, System Settings, search Bluetooth.
Probably a laptop with Bluetooth hardware does show the Bluetooth logo somewhere on the outside.

I am getting this error, when I click start menu and then Bluetooth manager it just disappeared immediately

blueman-manager 00.36.22 ERROR Manager:137 on_dbus_name_appeared: Default adapter not found, trying first available.
blueman-manager 00.36.22 ERROR Manager:141 on_dbus_name_appeared: No adapter(s) found, exiting

what does lsusb command in terminal show? (list usb devices)

Bus 001 Device 003: ID 04f2:b40e Chicony Electronics Co., Ltd HP Truevision HD camera
Bus 001 Device 002: ID 8087:8000 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 002: ID 046d:c018 Logitech, Inc. Optical Wheel Mouse
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

rembmer i have bluetooth when i was using windows 10 but since i am using manjaro its not available or not working maybe

I do not know how the bluetooth device is connected in your laptop. Many times it is via (internal) USB. It seems that the linux kernel does not recognize the bluetooth device in your laptop. The only advice I can give you at this point is to buy a usb bluetooth dongle which are usually not expensive, and try that. Or maybe borrow one to test it.

Bus 001 Device 003: ID 04f2:b40e Chicony Electronics Co., Ltd HP Truevision HD camera
Bus 001 Device 002: ID 8087:8000 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 004: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
Bus 002 Device 003: ID 046d:c018 Logitech, Inc. Optical Wheel Mouse
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

what do you suggest now?

Well, now it is time to start from the beginning: Do what it says here:

Maybe if you give that information members of the forum who use XFCE can help you. (I am on KDE). I am using the same USB dongle that you now? have inserted in your laptop and that is working out of the box, so that is not the issue (anymore).

What is different in XFCE and KDE ? BTW, I am developer (programmer) what do you suggest me ?

Information about my device

rfkill list

0: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
1: hci0: Bluetooth
	Soft blocked: no
	Hard blocked: no

Status

sudo systemctl status bluetooth
● bluetooth.service - Bluetooth service
     Loaded: loaded (/usr/lib/systemd/system/bluetooth.service; enabled; vendor preset: disabled)
     Active: active (running) since Thu 2022-01-06 17:39:20 PKT; 1h 57min ago
       Docs: man:bluetoothd(8)
   Main PID: 1486 (bluetoothd)
     Status: "Running"
      Tasks: 1 (limit: 11838)
     Memory: 2.2M
        CPU: 40ms
     CGroup: /system.slice/bluetooth.service
             └─1486 /usr/lib/bluetooth/bluetoothd

Jan 06 17:39:20 pits systemd[1]: Starting Bluetooth service...
Jan 06 17:39:20 pits bluetoothd[1486]: Bluetooth daemon 5.62
Jan 06 17:39:20 pits systemd[1]: Started Bluetooth service.
Jan 06 17:39:20 pits bluetoothd[1486]: Starting SDP server
Jan 06 17:39:20 pits bluetoothd[1486]: Bluetooth management interface 1.21 initialized

Blueman

blueman-manager

(blueman-manager:6288): Gtk-WARNING **: 19:37:07.331: Theme parsing error: gtk.css:4091:13: negative values are not allowed.

(blueman-manager:6288): Gtk-WARNING **: 19:37:07.347: Theme parsing error: gtk.css:7855:13: negative values are not allowed.

(blueman-manager:6288): Gtk-WARNING **: 19:37:07.348: Theme parsing error: gtk.css:8039:19: negative values are not allowed.

(blueman-manager:6288): Gtk-WARNING **: 19:37:07.349: Theme parsing error: gtk.css:8317:21: negative values are not allowed.

(blueman-manager:6288): Gtk-WARNING **: 19:37:07.349: Theme parsing error: gtk.css:8318:24: negative values are not allowed.
blueman-manager 19.37.08 ERROR    Manager:137 on_dbus_name_appeared: Default adapter not found, trying first available.
blueman-manager 19.37.08 ERROR    Manager:141 on_dbus_name_appeared: No adapter(s) found, exiting

Qui bluz

pacman -Qi bluez
Name            : bluez
Version         : 5.62-1
Description     : Daemons for the bluetooth protocol stack
Architecture    : x86_64
URL             : http://www.bluez.org/
Licenses        : GPL2
Groups          : None
Provides        : None
Depends On      : libical  dbus  glib2  alsa-lib  json-c
Optional Deps   : None
Required By     : blueman  gnome-bluetooth  pulseaudio-bluetooth
Optional For    : networkmanager
Conflicts With  : obexd-client  obexd-server
Replaces        : None
Installed Size  : 2.68 MiB
Packager        : Andreas Radke <andyrtr@archlinux.org>
Build Date      : Thu 14 Oct 2021 12:21:34 AM PKT
Install Date    : Mon 27 Dec 2021 07:38:35 PM PKT
Install Reason  : Installed as a dependency for another package
Install Script  : No
Validated By    : Signature

Qi bluedevil

pacman -Qi bluedevil
Name            : bluedevil
Version         : 1:5.23.4-1
Description     : Integrate the Bluetooth technology within KDE workspace and applications
Architecture    : x86_64
URL             : https://kde.org/plasma-desktop/
Licenses        : GPL2
Groups          : plasma
Provides        : None
Depends On      : bluez-qt  kdeclarative
Optional Deps   : pulseaudio-bluetooth: to connect to A2DP profile [installed]
Required By     : None
Optional For    : None
Conflicts With  : None
Replaces        : None
Installed Size  : 1547.14 KiB
Packager        : Antonio Rojas <arojas@archlinux.org>
Build Date      : Tue 30 Nov 2021 09:28:05 PM PKT
Install Date    : Thu 06 Jan 2022 07:39:06 PM PKT
Install Reason  : Explicitly installed
Install Script  : No
Validated By    : Signature

lsusb

lsusb
Bus 001 Device 003: ID 04f2:b40e Chicony Electronics Co., Ltd HP Truevision HD camera
Bus 001 Device 002: ID 8087:8000 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 003: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
Bus 002 Device 002: ID 046d:c018 Logitech, Inc. Optical Wheel Mouse
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub