Many threads on this and I Have tried almost all of them and none of them work (this is super frustrating!)

Im using the ASUS TUF B550Plus wifi gaming motherboard, flashed to the latest BIOS. However, it keeps saying no bluetooth found in settings (see below)

I've tried alot of things from sudo modprobe btusb etc mentioned in the other threads but nothing works. I'm using Ubuntu 20.04 and kernel 5.11.0-37-generic

Systemctl output

➜ ~ systemctl status bluetooth
● bluetooth.service - Bluetooth service Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled) Active: active (running) since Wed 2021-10-13 01:36:17 +08; 9min ago Docs: man:bluetoothd(8) Main PID: 104679 (bluetoothd) Status: "Running" Tasks: 1 (limit: 38354) Memory: 512.0K CGroup: / └─104679 /usr/lib/bluetooth/bluetoothd
Oct 13 01:36:17 wboy systemd[1]: Starting Bluetooth service...
Oct 13 01:36:17 wboy bluetoothd[104679]: Bluetooth daemon 5.53
Oct 13 01:36:17 wboy systemd[1]: Started Bluetooth service.
Oct 13 01:36:17 wboy bluetoothd[104679]: Starting SDP server
Oct 13 01:36:17 wboy bluetoothd[104679]: Bluetooth management interface 1.19 initialized

Bluetoothctl output

➜ ~ sudo bluetoothctl
Agent registered
[bluetooth]# show
No default controller available
[bluetooth]# 

lshw output

➜ ~ sudo lshw -C network *-network description: Wireless interface product: Wi-Fi 6 AX200 vendor: Intel Corporation physical id: 0 bus info: pci@0000:06:00.0 logical name: wlp6s0 version: 1a serial: 44:af:28:34:ae:2c width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=5.11.0-37-generic firmware=59.601f3a66.0 cc-a0-59.ucode ip=192.168.1.93 latency=0 link=yes multicast=yes wireless=IEEE 802.11 resources: irq:34 memory:fc300000-fc303fff *-network description: Ethernet interface product: RTL8125 2.5GbE Controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:07:00.0 logical name: enp7s0 version: 04 serial: f0:2f:74:22:d9:e5 size: 1Gbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=5.11.0-37-generic duplex=full firmware=rtl8125b-2_0.0.2 07/13/20 ip=192.168.1.120 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s resources: irq:38 ioport:f000(size=256) memory:fc200000-fc20ffff memory:fc210000-fc213fff

Output of lsusb

➜ lsusb
Bus 004 Device 002: ID 05e3:0612 Genesys Logic, Inc. Hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 006: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 003 Device 005: ID 045e:028e Microsoft Corp. Xbox360 Controller
Bus 003 Device 004: ID 0079:181c DragonRise Inc. TGZ Controller
Bus 003 Device 003: ID 2f68:0082 Hoksi Technology DURGOD Taurus K320
Bus 003 Device 002: ID 05e3:0610 Genesys Logic, Inc. Hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 1e71:2007 NZXT NZXT USB Device
Bus 001 Device 003: ID 05e3:0610 Genesys Logic, Inc. Hub
Bus 001 Device 002: ID 0b05:1939 ASUSTek Computer, Inc. AURA LED Controller
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Output for sudo dmesg | grep -i blue:

Initially it returns nothing, but after running the following commands:

sudo systemctl enable bluetooth.service
systemctl start bluetooth
sudo modprobe btusb

then i get this output

➜ sudo dmesg | grep -i blue
[42389.576251] Bluetooth: Core ver 2.22
[42389.576270] Bluetooth: HCI device and connection manager initialized
[42389.576272] Bluetooth: HCI socket layer initialized
[42389.576274] Bluetooth: L2CAP socket layer initialized
[42389.576276] Bluetooth: SCO socket layer initialized

Any help will be much appreciated!

8

1 Answer

So I fixed it - though I'm not sure how. I disconnected and reconnected the modem wires, and then power cycled the computer and it works

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