Bluetooth Not working

[10Mint]

Hi All,

So I have seen this issue before, on many forums and I have since tried all the fixes and had no joy whatsoever. So I have an Acer Aspire (computer name)

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james@james-Aspire-A517-52 
-------------------------- 
OS: Linux Mint 20.3 x86_64 
Host: Aspire A517-52 V1.26 
Kernel: 6.0.9-060009-generic 
Uptime: 8 mins 
Packages: 3199 (dpkg), 14 (flatpak) 
Shell: bash 5.0.17 
Resolution: 1920x1080 
DE: Cinnamon 
WM: Mutter (Muffin) 
WM Theme: Mint-Y-Dark (Mint-Y) 
Theme: Mint-Y [GTK2/3] 
Icons: Mint-Y [GTK2/3] 
Terminal: gnome-terminal 
CPU: 11th Gen Intel i5-1135G7 (8) @ 4.200GHz 
GPU: Intel Device 9a49 
Memory: 4099MiB / 7726MiB 

I am running Kernel 6, which is higher than 5.14 where it should have been fixed. I am running a MediaTek Bluetooth MT7921, the device is up to date, (apt-get update, apt-get upgrade), I have no idea where to go next, but I am starting to suspect the driver isn't compatible.

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james@james-Aspire-A517-52:~$ 
james@james-Aspire-A517-52:~$ sudo dmesg | grep -i blue
[sudo] password for james:          
[    6.589918] Bluetooth: Core ver 2.22
[    6.589954] NET: Registered PF_BLUETOOTH protocol family
[    6.589955] Bluetooth: HCI device and connection manager initialized
[    6.589959] Bluetooth: HCI socket layer initialized
[    6.589961] Bluetooth: L2CAP socket layer initialized
[    6.589966] Bluetooth: SCO socket layer initialized
[    6.728765] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[    6.728768] Bluetooth: BNEP filters: protocol multicast
[    6.728770] Bluetooth: BNEP socket layer initialized
[    6.883416] Bluetooth: hci0: Device setup in 269301 usecs
[    6.883426] Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection command is advertised, but not supported.
[    6.956882] Bluetooth: hci0: AOSP extensions version v0.96
[    6.956886] Bluetooth: hci0: AOSP quality report is not supported
[    6.959704] Bluetooth: MGMT ver 1.22
[   26.845783] Bluetooth: RFCOMM TTY layer initialized
[   26.845791] Bluetooth: RFCOMM socket layer initialized
[   26.845797] Bluetooth: RFCOMM ver 1.11
[   28.113534] Bluetooth: hci0: Device setup in 135812 usecs
[   28.113541] Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection command is advertised, but not supported.
[   28.197399] Bluetooth: hci0: AOSP extensions version v0.96
[   28.197405] Bluetooth: hci0: AOSP quality report is not supported
[ 3442.343500] Bluetooth: hci0: Device setup in 135103 usecs
[ 3442.343507] Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection command is advertised, but not supported.
[ 3442.426872] Bluetooth: hci0: AOSP extensions version v0.96
[ 3442.426880] Bluetooth: hci0: AOSP quality report is not supported
james@james-Aspire-A517-52:~$ 

Does anyone have any advice?

[twerq]

I am running Kernel 6

Have you tried another kernel? Mint goes with 5.15. Update a dozen of days ago fixed bluetooth issue for my portable speaker

[10Mint]

I have tried that one, but hoped the fix would have been included in the latest, or is the kernel not keeping the previous fixes

[Joe2Shoe]

In Terminal:
dmesg | grep mt7921e

Reboot.

[Joe2Shoe]

Try this:
Solved by powering off the laptop (instead of rebooting it)
Fixed per user: "Following this suggestion, I powered off the laptop (instead of rebooting it) and unplugged the power cable for a few minutes. Then the Wi-Fi adapter magically appeared."

Or upgrade kernel to 5.16.19 or 5.17