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#1 2020-07-19 12:50:51

samhh
Member
Registered: 2017-12-25
Posts: 17

[Solved] No bluetooth from AX200

Edit: Hello future searchers! It turns out it was a hardware issue that would also affect Windows (in which case it'd be greyed out in the device manager). Essentially there's a hardware bug with this chipset that sometimes causes bluetooth to fail, and it can be temporarily fixed by turning off the power, unplugging from the wall, waiting up to a minute, and then booting up again. Beyond that it seems to be random. When it's working, `lsusb` will give you "Intel Corp. AX200 Bluetooth" and `rfkill list` will have a bluetooth entry.

Hello! My motherboard has an integrated Intel AX200 card supplying wifi and bluetooth. The wifi works fine but I'm not getting anything at all on the bluetooth end.

I'm going to preface this with the fact that I'm dual booting with Windows 10, in which the bluetooth is working fine. This tells me it's probably not a hardware issue.

Kernel: `5.7.9-arch1-1`

`systemctl status bluetooth`:

● bluetooth.service - Bluetooth service
     Loaded: loaded (/usr/lib/systemd/system/bluetooth.service; enabled; vendor preset: disabled)
     Active: active (running) since Sun 2020-07-19 13:48:00 BST; 5s ago
       Docs: man:bluetoothd(8)
   Main PID: 12893 (bluetoothd)
     Status: "Running"
      Tasks: 1 (limit: 19123)
     Memory: 964.0K
     CGroup: /system.slice/bluetooth.service
             └─12893 /usr/lib/bluetooth/bluetoothd

Jul 19 13:48:00 hostname systemd[1]: Starting Bluetooth service...
Jul 19 13:48:00 hostname bluetoothd[12893]: Bluetooth daemon 5.54
Jul 19 13:48:00 hostname systemd[1]: Started Bluetooth service.
Jul 19 13:48:00 hostname bluetoothd[12893]: Starting SDP server
Jul 19 13:48:00 hostname bluetoothd[12893]: Bluetooth management interface 1.16 initialized

Following the debugging steps on the bluetooth wiki page, after stopping the bluetooth service I see this in the output of `sudo /usr/lib/bluetooth/bluetoothd -n -d`:

bluetoothd[12742]: src/adapter.c:read_index_list_complete() Number of controllers: 0

`lspci -knn | grep Net`:

2a:00.0 Network controller [0280]: Intel Corporation Wi-Fi 6 AX200 [8086:2723] (rev 1a)

`lsmod | grep btusb` - potentially worth mentioning I needed to manually start this module with modprobe:

btusb                  65536  0
btrtl                  24576  1 btusb
btbcm                  20480  1 btusb
btintel                32768  1 btusb
bluetooth             712704  11 btrtl,btintel,btbcm,bnep,btusb

`rfkill list`:

0: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no

`dmesg | grep blue` comes back empty. Here's `dmesg` where it loads the wifi driver:

[   26.346131] Intel(R) Wireless WiFi driver for Linux
[   26.346133] Copyright(c) 2003- 2015 Intel Corporation
[   26.346213] iwlwifi 0000:2a:00.0: enabling device (0000 -> 0002)
[   26.352579] iwlwifi 0000:2a:00.0: api flags index 2 larger than supported by driver
[   26.352588] iwlwifi 0000:2a:00.0: TLV_FW_FSEQ_VERSION: FSEQ Version: 68.3.35.22
[   26.352590] iwlwifi 0000:2a:00.0: Found debug destination: EXTERNAL_DRAM
[   26.352591] iwlwifi 0000:2a:00.0: Found debug configuration: 0
[   26.352800] iwlwifi 0000:2a:00.0: loaded firmware version 53.c31ac674.0 cc-a0-53.ucode op_mode iwlmvm
[   26.352820] iwlwifi 0000:2a:00.0: Direct firmware load for iwl-debug-yoyo.bin failed with error -2
...
[   26.608472] iwlwifi 0000:2a:00.0: Detected Intel(R) Wi-Fi 6 AX200 160MHz, REV=0x340
...
[   26.973926] iwlwifi 0000:2a:00.0 wlo1: renamed from wlan0

Notably, here's what I see with `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 004: ID feed:1307
Bus 003 Device 003: ID 1532:002e Razer USA, Ltd RZ01-0058 Gaming Mouse [Naga]
Bus 003 Device 002: ID 05e3:0610 Genesys Logic, Inc. 4-port 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 b58e:9e84 Blue Microphones Yeti Stereo Microphone
Bus 001 Device 003: ID 1462:7c90 Micro Star International MYSTIC LIGHT
Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Some searching tells me I should probably be seeing `8087:0029 Intel Corp.` here.

Where to go from here? Cheers smile

Last edited by samhh (2020-08-01 17:35:47)

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#2 2020-09-26 16:04:46

keitalbame
Member
Registered: 2015-07-20
Posts: 5

Re: [Solved] No bluetooth from AX200

Did you get this fixed? Having the same issue.

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#3 2020-09-27 12:37:56

samhh
Member
Registered: 2017-12-25
Posts: 17

Re: [Solved] No bluetooth from AX200

See the edit at the top, it's a hardware problem. It seems to have stopped happening to me entirely now for some reason.

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