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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.
Platform: ThinkPad T14 Gen 2i
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: mantic
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[Intel AX201] Bluetooth LE not working after upgrade from 22.04 to 23.10
https://bugs.launchpad.net/bugs/2037906
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