Comment # 9 on bug 1214133 from Badke

For me it's now the same problem, starting with one of the February-Snapshots.
In January my bluetooth adapter still worked. Unfortunately I cannot specify
the last snapshot where it worked.

I didn't plug in any bluetooth adapter or keyboard. I just want to use my
headphones with mouse and keyboard via the internal adapter (MT7922).

The command outputs are comparable to the first reporter's (see below). My
machine is an HP elitebook 845 G10 with Ryzen 8740HS and Radeon 780M Graphics
64GB RAM, if that helps in any way.
Seeing myself as a junior-amateur in handling linux, but a complete rookie
regarding Bug reports, do you have any suggestion to solve the problem for me?
Would it be a technically safe way to manually import the firmware and rebuild
initrd myself, as you mentioned before? Is this procedure compatbible with
further upgrades? Or should I rather wait, until the problem is resolved?
Unfortunately a downgrade to Leap or Slowroll is not an Option for me
(Bluetooth not supprted on Leap, since Kernel is too old, and Slowroll shows
the same Bluetooth bug).

Let me know, if I can help with additional information.

Thanks for advice.



dmesg | grep luetooth

[    3.199354] Bluetooth: Core ver 2.22
[    3.199385] Bluetooth: HCI device and connection manager initialized
[    3.199393] Bluetooth: HCI socket layer initialized
[    3.199396] Bluetooth: L2CAP socket layer initialized
[    3.199398] Bluetooth: SCO socket layer initialized
[    3.204375] bluetooth hci0: Direct firmware load for
mediatek/BT_RAM_CODE_MT7922_1_1_hdr.bin failed with error -2
[    3.204381] Bluetooth: hci0: Failed to load firmware file (-2)
[    3.204391] Bluetooth: hci0: Failed to set up firmware (-2)
[    3.204398] Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection
command is advertised, but not supported.
[    3.261655] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[    3.261657] Bluetooth: BNEP filters: protocol multicast
[    3.261661] Bluetooth: BNEP socket layer initialized


lsinitrd | grep BT_RAM_CODE

-rw-r--r--   1 root     root       343196 Feb 15 22:08
usr/lib/firmware/mediatek/BT_RAM_CODE_MT7961_1_2_hdr.bin.xz
-rw-r--r--   1 root     root       446012 Feb 15 22:08
usr/lib/firmware/mediatek/mt7925/BT_RAM_CODE_MT7925_1_1_hdr.bin.xz


ls -l /usr/lib/firmware/mediatek/BT_RAM_CODE*

-rw-r--r-- 1 root root 513960 23. Feb 17:25
/usr/lib/firmware/mediatek/BT_RAM_CODE_MT7922_1_1_hdr.bin.xz
-rw-r--r-- 1 root root 343196 23. Feb 17:25
/usr/lib/firmware/mediatek/BT_RAM_CODE_MT7961_1_2_hdr.bin.xz