Arch Linux

nightfury

Member

Registered: 2024-05-21

Posts: 11

[SOLVED] Bluetooth controller not available

Recently got into an issue,  until today my Bluetooth seems to work fine but while i was trying to get working with qemu to try out virtualization on KVMs, i noticed that suddenly after a reboot my bluetooth was not working. I opened blueman-manager and turned on the Bluetooth but no devices were shown in the list, here's a pic of my blueman-manager,

Here i saw that Device tab was grayed out so I ran some other commands that i knew regarding this problem to see if my bluetooth device was getting found or not or whether it is blocked or not,
output from rfkill

ID TYPE      DEVICE                 SOFT      HARD
 0 wlan      ideapad_wlan      unblocked unblocked
 1 bluetooth ideapad_bluetooth unblocked unblocked
 2 wlan      phy0              unblocked unblocked
 3 bluetooth hci0              unblocked unblocked

output from status of bluetooth.service

bluetooth.service - Bluetooth service
     Loaded: loaded (/usr/lib/systemd/system/bluetooth.service; enabled; preset: disabled)
     Active: active (running) since Tue 2024-05-21 18:51:08 IST; 1h 21min ago
       Docs: man:bluetoothd(8)
   Main PID: 987 (bluetoothd)
     Status: "Running"
      Tasks: 1 (limit: 16573)
     Memory: 3.3M (peak: 4.1M)
        CPU: 42ms
     CGroup: /system.slice/bluetooth.service
             └─987 /usr/lib/bluetooth/bluetoothd

output from bluetoothctl

Waiting to connect to bluetoothd...[bluetooth]# Agent registered
[bluetooth]# list
[bluetooth]# show
No default controller available

But after all of this i am not able to figure out how to actually solve this issue, i checked that this is not a hardware issue as the bluetooth card works on other live OS i tried.

Please guide...

Also this is my first time to arch wiki i have been able to solve most of my problems by just reading but this one seems to be a lot for me, had spent nearly 6 to 7 hrs reading stuff, still couldn't figure out.
My machine is a Legion 5 gen 5 AMD version(if it helps in anyway)

Last edited by nightfury (2024-05-21 15:37:59)

theRedCyclops

Member

Registered: 2022-06-17

Posts: 68

Re: [SOLVED] Bluetooth controller not available

I'm having seemingly the same issue, no luck so far in my research.

nightfury

Member

Registered: 2024-05-21

Posts: 11

Re: [SOLVED] Bluetooth controller not available

I guess the recent kernel update broke something for the mediatek bluetooth cards.

theRedCyclops

Member

Registered: 2022-06-17

Posts: 68

Re: [SOLVED] Bluetooth controller not available

just re-researched by searching directly on the wiki and found this: https://bbs.archlinux.org/viewtopic.php?id=295965

nightfury

Member

Registered: 2024-05-21

Posts: 11

Re: [SOLVED] Bluetooth controller not available

Ahh Thanks man the symlink option did solve my issue.

loqs

Member

Registered: 2014-03-06

Posts: 18,384

Re: [SOLVED] Bluetooth controller not available

After the issue is fixed in the kernel in 6.9.1 please remember to remove the symlink.

StrangerThanFiction

Member

Registered: 2024-05-23

Posts: 1

Re: [SOLVED] Bluetooth controller not available

Why not just fall back to LTS kernel until the issue is fixed ?

---

Strange Indeed !!

theRedCyclops

Member

Registered: 2022-06-17

Posts: 68

Re: [SOLVED] Bluetooth controller not available

it may be an option for some, but some configurations (such as mine) are heavily linked with a specific kernel and its features.

claudiuchis

Member

Registered: 2025-03-10

Posts: 2

Re: [SOLVED] Bluetooth controller not available

In my case, bluetooth was soft blocked:

rfkill
ID TYPE      DEVICE              SOFT      HARD
0 wlan      dell-wifi      unblocked unblocked
1 bluetooth dell-bluetooth blocked unblocked
3 wlan      phy0           unblocked unblocked

To unblock it I ran this command:

sudo rfkill unblock bluetooth

Then the bluetooth controller appeared:

bluetoothctl
[bluetooth]# hci0 new_settings: powered bondable ssp br/edr le secure-conn wide-band-speech
[bluetooth]# Agent registered
[bluetooth]# [CHG] Controller 1C:2D:70:10:B0:2A Pairable: yes
[bluetooth]#