I have laptop Asus x550cc, today check my Bluetooth is not available, I checked somethings else:
[root@fedora javad]# lsmod | grep blue
bluetooth 876544 15 btrtl,btmtk,btintel,btbcm,bnep,ath3k,btusb
rfkill 36864 9 ath9k,asus_wmi,bluetooth,cfg80211
[root@fedora javad]# dmesg | grep -i blue
[ 2.215693] usb 1-1.1: Product: Bluetooth USB Host Controller
[ 9.258838] Bluetooth: Core ver 2.22
[ 9.258882] NET: Registered PF_BLUETOOTH protocol family
[ 9.258885] Bluetooth: HCI device and connection manager initialized
[ 9.258891] Bluetooth: HCI socket layer initialized
[ 9.258894] Bluetooth: L2CAP socket layer initialized
[ 9.258903] Bluetooth: SCO socket layer initialized
[ 9.840529] Bluetooth: Patch file not found ar3k/AthrBT_0x01020200.dfu
[ 9.840532] Bluetooth: Loading patch file failed
[ 73.455001] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 73.455008] Bluetooth: BNEP filters: protocol multicast
[ 73.455014] Bluetooth: BNEP socket layer initialized
[root@fedora javad]# sudo lsusb |grep Bluetooth
Bus 001 Device 003: ID 13d3:3362 IMC Networks Atheros AR3012 Bluetooth 4.0 Adapter
check systemctl bluetooth:
[root@fedora javad]# systemctl status bluetooth
● bluetooth.service - Bluetooth service
Loaded: loaded (/usr/lib/systemd/system/bluetooth.service; enabled; preset: enabled)
Active: active (running) since Sat 2023-02-25 09:17:42 +0330; 10min ago
Docs: man:bluetoothd(8)
Main PID: 4948 (bluetoothd)
Status: "Running"
Tasks: 1 (limit: 9340)
Memory: 648.0K
CPU: 60ms
CGroup: /system.slice/bluetooth.service
└─4948 /usr/libexec/bluetooth/bluetoothd
Feb 25 09:17:42 fedora systemd[1]: Starting bluetooth.service - Bluetooth service...
Feb 25 09:17:42 fedora systemd[4948]: ConfigurationDirectory 'bluetooth' already exists but the mode is different. (File system: 755 ConfigurationDirectoryMode: 555)
Feb 25 09:17:42 fedora bluetoothd[4948]: Bluetooth daemon 5.66
Feb 25 09:17:42 fedora bluetoothd[4948]: Starting SDP server
Feb 25 09:17:42 fedora systemd[1]: Started bluetooth.service - Bluetooth service.
Feb 25 09:17:42 fedora bluetoothd[4948]: Bluetooth management interface 1.22 initialized