Arch Linux

letterhead

Member

Registered: 2021-09-24

Posts: 9

Bluetooth not working after restart

I followed these steps again but nothing happens.

❯ bluetoothctl
Agent registered
[bluetooth]# scan on
No default controller available
[bluetooth]# 

Device is not blocked by rfkill
In the same wiki found this
How to do this step

This might also be caused by power saving measures, in which case adding the kernel parameter btusb.enable_autosuspend=n is a potential solution.

   

Card - Intel Wireless-AC 9560

Trilby

Inspector Parrot

Registered: 2011-11-29

Posts: 30,330

Website

Re: Bluetooth not working after restart

How to do this step

The words "kernel parameter" are a link ... to the page that instructs you on exactly how to do that step.

---

"UNIX is simple and coherent" - Dennis Ritchie; "GNU's Not Unix" - Richard Stallman

letterhead

Member

Registered: 2021-09-24

Posts: 9

Re: Bluetooth not working after restart

Added btusb.enable_autosuspend=n from grub but still the problem persist.

❯ cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-linux root=UUID=966747c5-6662-40f9-8c7f-934d4b63bafe rw loglevel=3 quiet btusb.enable_autosuspend=n

skunktrader

Member

From: Brisbane, Australia

Registered: 2010-02-14

Posts: 1,578

Re: Bluetooth not working after restart

I have the same problem which started recently. The bluetooth controller does not survive a reboot. I found that if I completely power off the machine before restarting, then bluetooth works as before.

letterhead

Member

Registered: 2021-09-24

Posts: 9

Re: Bluetooth not working after restart

I have the same problem which started recently. The bluetooth controller does not survive a reboot. I found that if I completely power off the machine before restarting, then bluetooth works as before.

It didn't worked even after powering off the machine.

Bluetooth has stopped working completely, but wifi still works.

letterhead

Member

Registered: 2021-09-24

Posts: 9

Re: Bluetooth not working after restart

Output of

❯ sudo dmesg | grep -iE 'blue|firm'
[    2.360806] ACPI: video: [Firmware Bug]: ACPI(PEGP) defines _DOD but not _DOS
[    2.630278] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[    2.733549] Bluetooth: Core ver 2.22
[    2.733570] NET: Registered PF_BLUETOOTH protocol family
[    2.733572] Bluetooth: HCI device and connection manager initialized
[    2.733576] Bluetooth: HCI socket layer initialized
[    2.733579] Bluetooth: L2CAP socket layer initialized
[    2.733583] Bluetooth: SCO socket layer initialized
[    2.872315] elan_i2c i2c-ELAN0626:00: Elan Touchpad: Module ID: 0x00e2, Firmware: 0x0000, Sample: 0x0000, IAP: 0x0000
[    2.880825] iwlwifi 0000:00:14.3: loaded firmware version 46.6b541b68.0 9000-pu-b0-jf-b0-46.ucode op_mode iwlmvm
[    3.919993] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[    3.919997] Bluetooth: BNEP filters: protocol multicast
[    3.920002] Bluetooth: BNEP socket layer initialized
[    5.068763] Bluetooth: hci0: command 0xfc05 tx timeout
[    5.068763] Bluetooth: hci0: Reading Intel version command failed (-110)

skunktrader

Member

From: Brisbane, Australia

Registered: 2010-02-14

Posts: 1,578

Re: Bluetooth not working after restart

After rebooting the machine I see this:

Nov 29 09:30:43 skunk-develop kernel: Bluetooth: hci0: command 0xfc05 tx timeout
Nov 29 09:30:43 skunk-develop kernel: Bluetooth: hci0: Reading Intel version command failed (-110)

If I power off, then restart I see this instead:

Nov 29 09:33:02 skunk-develop kernel: Bluetooth: hci0: Legacy ROM 2.5 revision 1.0 build 3 week 17 2014
Nov 29 09:33:02 skunk-develop kernel: Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.8.10-fw-1.10.3.11.e.bseq
Nov 29 09:33:02 skunk-develop kernel: Bluetooth: hci0: unexpected event for opcode 0xfc2f
Nov 29 09:33:02 skunk-develop kernel: Bluetooth: hci0: Intel BT fw patch 0x32 completed & activated

and everything "just works".

My problem may be completely different to yours though. Just posting my results in case it helps somehow.

letterhead

Member

Registered: 2021-09-24

Posts: 9

Re: Bluetooth not working after restart

I think  its a kernel 5.15 bug https://www.mail-archive.com/debian-bug … 32263.html

Bluetooth is working with kernel 5.14

Last edited by letterhead (2021-11-30 08:09:10)

greenfoo

Member

Registered: 2019-12-05

Posts: 8

Re: Bluetooth not working after restart

It has been confirmed to be a regression in the 5.15 kernel.

The linux-bluetooth mailing list is already aware of this issue: https://bugzilla.kernel.org/show_bug.cgi?id=215167

skunktrader

Member

From: Brisbane, Australia

Registered: 2010-02-14

Posts: 1,578

Re: Bluetooth not working after restart

It has been confirmed to be a regression in the 5.15 kernel.

The linux-bluetooth mailing list is already aware of this issue: https://bugzilla.kernel.org/show_bug.cgi?id=215167

Thanks for posting the link to the upstream bug,

luisfelipe.silva

Member

Registered: 2022-05-31

Posts: 2

Re: Bluetooth not working after restart

have you found any way to solve this? btw i'm running the kernel 5.17 on my laptop and it works perfectly, but my pc on kernel 5.18 is having this problem.

kristianjgs

Member

Registered: 2017-02-14

Posts: 1

Re: Bluetooth not working after restart

Hello, it's happening with the last kernel 5.18.5-arch1-1

serxxx

Member

Registered: 2017-04-02

Posts: 9

Re: Bluetooth not working after restart

It's still happening with 6.4.12 :-/

2ManyDogs

Forum Fellow

Registered: 2012-01-15

Posts: 4,645

Re: Bluetooth not working after restart

Another necrobump, and with essentially an empty post. Please stop.

Closing.