Comment 0 for bug 2037906

syslog:
2023-09-20T09:32:54.138852+02:00 zaionc kernel: [ 13.539860] Bluetooth: hci0: Waiting for firmware download to complete
2023-09-20T09:32:54.138857+02:00 zaionc kernel: [ 13.540223] Bluetooth: hci0: Firmware loaded in 1706498 usecs
2023-09-20T09:32:54.138858+02:00 zaionc kernel: [ 13.540278] Bluetooth: hci0: Waiting for device to boot
2023-09-20T09:32:54.154894+02:00 zaionc kernel: [ 13.555430] Bluetooth: hci0: Malformed MSFT vendor event: 0x02
2023-09-20T09:32:54.154908+02:00 zaionc kernel: [ 13.555482] Bluetooth: hci0: Device booted in 14872 usecs
2023-09-20T09:32:54.154910+02:00 zaionc kernel: [ 13.555913] Bluetooth: hci0: Found Intel DDC parameters: intel/ibt-19-0-4.ddc
2023-09-20T09:32:54.158856+02:00 zaionc kernel: [ 13.558300] Bluetooth: hci0: Applying Intel DDC parameters completed
2023-09-20T09:32:54.158859+02:00 zaionc kernel: [ 13.559326] Bluetooth: hci0: Firmware revision 0.4 build 249 week 27 2023

lshw:
              *-usb:5
                   description: Bluetooth wireless interface
                   product: AX201 Bluetooth
                   vendor: Intel Corp.
                   physical id: a
                   bus info: usb@3:a
                   version: 0.02
                   capabilities: bluetooth usb-2.01
                   configuration: driver=btusb maxpower=100mA speed=12Mbit/s

root@zaionc:~# hcitool lescan
Set scan parameters failed: Input/output error

At first bluetooth stopped working at all due to Ubuntu bug = missing firmware. It was fixed recently and now the bluetooth module seems fine, but the whole BTLE part is not available. Particularly I cannot detect/pair Logitech M720 mouse.