Bluetooth has stopped working

Help
1

As the tile says Bluetooth on my system has stopped working since yesterday. When I hover over the bluetooth icon in the task bar it says “No adapters available” and I cannot enable it in settings.

Output of sudo dmesg | grep -i blue:

[    7.945014] Bluetooth: Core ver 2.22
[    7.945039] NET: Registered PF_BLUETOOTH protocol family
[    7.945040] Bluetooth: HCI device and connection manager initialized
[    7.945045] Bluetooth: HCI socket layer initialized
[    7.945047] Bluetooth: L2CAP socket layer initialized
[    7.945051] Bluetooth: SCO socket layer initialized
[    8.932520] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[    8.932523] Bluetooth: BNEP filters: protocol multicast
[    8.932527] Bluetooth: BNEP socket layer initialized
[   10.020191] Bluetooth: hci0: Reading Intel version command failed (-110)
[   10.020192] Bluetooth: hci0: command 0xfc05 tx timeout

Information about network controller I found in settings application:


05:00.0 Network controller: Intel Corporation Wi-Fi 6 AX200 (rev 1a)
	Subsystem: Intel Corporation Wi-Fi 6 AX200NGW
	Flags: bus master, fast devsel, latency 0, IRQ 34, IOMMU group 15
	Memory at fc700000 (64-bit, non-prefetchable) [size=16K]
	Capabilities: <access denied>
	Kernel driver in use: iwlwifi
	Kernel modules: iwlwifi

Any help is appreciated. Thanks in advance.

2

What does

 /usr/sbin/rfkill

return?

1 Like
3

I am using Debian and do not have rfkill installed, but the problem seems to have fixed it’s self I did nothing but after booting today Bluetooth is working again and stays working after a restart. I don’t know why it suddenly works but thanks for trying to help.

4

If you hadn’t rebooted after updating, file versions of required libraries might have been out of whack with the versions that software already resident in RAM is expecting / looking for when it loads a file in from the disk. This is generally not a good thing.

If you hear the term atomic updates, being bandied about, then, amongst other things, that is a way to prevent this temporary mismatch from happening