Hello!
My system has a MEDIATEK MT7922 pci-e wireless chip for combined wifi + bluetooth:
$ lspci -v
0d:00.0 Network controller: MEDIATEK Corp. MT7922 802.11ax PCI Express Wireless Network Adapter
Subsystem: MEDIATEK Corp. MT7922 802.11ax PCI Express Wireless Network Adapter
Flags: bus master, fast devsel, latency 0, IRQ 174, IOMMU group 21
Memory at 847000000 (64-bit, prefetchable) [size=1M]
Memory at c0000000 (64-bit, non-prefetchable) [size=32K]
Capabilities: <access denied>
Kernel driver in use: mt7921e
Kernel modules: mt7921e
$ inxi -Fxz
Bluetooth:
Device-1: MediaTek Wireless_Device type: USB driver: btusb v: 0.8
bus-ID: 3-8:4 chip-ID: 0e8d:0616 class-ID: e001 serial: <filter>
Report: rfkill ID: hci0 rfk-id: 0 state: down bt-service: disabled
rfk-block: hardware: no software: no address: see --recommends
The wifi is working fine, but I can’t seem to figure out how to get the bluetooth working.
When I go to KDE System Settings > Bluetooth, it opens a blank page with “No devices paired” in the background. It doesn’t have any buttons or any other content. Based on my research, this page should show available adapters, as well as a way to pair devices.
In dmesg, I can see the mt7921e driver is loaded, along with bluetooth:
[ 5.565459] Bluetooth: Core ver 2.22
[ 5.565526] NET: Registered PF_BLUETOOTH protocol family
[ 5.565527] Bluetooth: HCI device and connection manager initialized
[ 5.565530] Bluetooth: HCI socket layer initialized
[ 5.565531] Bluetooth: L2CAP socket layer initialized
[ 5.565534] Bluetooth: SCO socket layer initialized
...
[ 6.910758] mt7921e 0000:0d:00.0: enabling device (0000 -> 0002)
[ 6.923257] mt7921e 0000:0d:00.0: ASIC revision: 79220010
[ 6.998102] mt7921e 0000:0d:00.0: HW/SW Version: 0x8a108a10, Build Time: 20221227123154a
[ 7.015189] mt7921e 0000:0d:00.0: WM Firmware Version: ____000000, Build Time: 20221227123243
[ 7.087711] Bluetooth: hci0: Device setup in 1284219 usecs
[ 7.087712] Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection command is advertised, but not supported.
...
[ 12.333220] Bluetooth: hci0: AOSP extensions version v0.96
[ 12.333225] Bluetooth: hci0: AOSP quality report is not supported
Is there something else I need to do to enable bluetooth support in the KDE?
Does bluetooth support require a separate driver for this chip? Or some software component is missing?
