[Bug 208965] not working bluetooth mouse low energy rtl8822ce

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https://bugzilla.kernel.org/show_bug.cgi?id=208965

--- Comment #19 from Niklas Frank (niklas97.nf@googlemail.com) ---
(In reply to david.zakarias from comment #13)
> I tried what Julian did, but things do not work. 
> 
> hciconfig hci0 shows:
> 
> hci0: Type: Primary  Bus: USB
>       BD Address: 80:30:49:1B:82:2C  ACL MTU: 1021:6  SCO MTU: 255:12
>       DOWN 
>       RX bytes:2068 acl:0 sco:0 events:189 errors:0
>       TX bytes:32660 acl:0 sco:0 commands:189 errors:0
> 
> If I start btmon, and do sudo hciconfig hci0 up, there's a huge amount of
> output, and an error at the end:
> 
> < HCI Command: LE Clear White List (0x08|0x0010) plen 0    #59 [hci0]
> 38.597768
> > HCI Event: Command Complete (0x0e) plen 4                #60 [hci0]
> 38.599898
>       LE Clear White List (0x08|0x0010) ncmd 2
>         Status: Success (0x00)
> < HCI Command: LE Set Resolvable P.. (0x08|0x002e) plen 2  #61 [hci0]
> 38.600001
>         Timeout: 900 seconds
> > HCI Event: Command Complete (0x0e) plen 4                #62 [hci0]
> 38.601954
>       LE Set Resolvable Private Address Timeout (0x08|0x002e) ncmd 2
>         Status: Unsupported Remote Feature / Unsupported LMP Feature (0x1a)
> 
> 
> I'm stuck, any ideas?

Hi,

I got a similar error. 
I have a Huawei Matebook 14 2020 with Ryzen 4600H and the same RTL8822CE. 
lsusb shows the following: 
Bus 003 Device 002: ID 1358:c123 Realtek Bluetooth Radio

I applied Julians Kernel patch and can see that the firmware is loaded during
boot, but bluez does not detect the controller. 
dmesg | grep -i bluetooth:
[    1.720939] usb 3-3: Product: Bluetooth Radio
[    3.962354] Bluetooth: Core ver 2.22
[    3.962376] Bluetooth: HCI device and connection manager initialized
[    3.962380] Bluetooth: HCI socket layer initialized
[    3.962382] Bluetooth: L2CAP socket layer initialized
[    3.962385] Bluetooth: SCO socket layer initialized
[    4.091974] Bluetooth: hci0: RTL: examining hci_ver=0a hci_rev=000c
lmp_ver=0a lmp_subver=8822
[    4.093982] Bluetooth: hci0: RTL: rom_version status=0 version=3
[    4.093985] Bluetooth: hci0: RTL: loading rtl_bt/rtl8822cu_fw.bin
[    4.094858] Bluetooth: hci0: RTL: loading rtl_bt/rtl8822cu_config.bin
[    4.094926] Bluetooth: hci0: RTL: cfg_sz 6, total sz 31422
[    4.196048] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[    4.196051] Bluetooth: BNEP filters: protocol multicast
[    4.196057] Bluetooth: BNEP socket layer initialized
[    4.371968] Bluetooth: hci0: RTL: fw version 0x09993aa1

Trying to bring the device up via 'hciconfig hci0 up' gives me the following
error message: 
Can't init device hci0: Protocol not supported (93)`

Does anyone have any Ideas what I can do to get this working?

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