Re: [REGRESSION] rtl8822cu: BLE disconnects with firmware 0x0673_0EDC

[To/Cc: +Hilda, linux-firmware@, Josh]

Dear Hilda, dear Josh,


Hilda, unfortunately, you do not have a Linux Kernel Bugzilla account, 
so I am replying here.

Am 02.04.26 um 01:57 schrieb [email protected]:
> https://bugzilla.kernel.org/show_bug.cgi?id=221309
> 
>              Bug ID: 221309
>             Summary: rtl8822cu: BLE disconnects with firmware 0x0673_0EDC
>                      regression
>             Product: Drivers
>             Version: 2.5
>            Hardware: AMD
>                  OS: Linux
>              Status: NEW
>            Severity: normal
>            Priority: P3
>           Component: Bluetooth
>            Assignee: [email protected]
>            Reporter: [email protected]
>          Regression: No
> 
> Created attachment 309794
>    --> https://bugzilla.kernel.org/attachment.cgi?id=309794&action=edit
> stability log after downgrade
> 
> Overview
> 
> After updating linux-firmware-realtek to 20260221-1 (which includes commit fbf93476,
> "update rtl8822c bt usb and uart firmware to 0x0673"), the RTL8822CU USB Bluetooth adapter
> (0bda:b00c) begins dropping BLE connections every few minutes. Each disconnect
> lasts several seconds before the device reconnects. The adapter itself never resets and
> the USB device remains active throughout. Only the BLE link is lost.

[… Linux 6.19.10-arch1-1 …]

It looks like, the linux-firmware commit [1][2] caused a regression. 
(Also linux-bluetooth@ wasn’t in Cc?) Could you please look into it? I 
recommend to revert it for the time being and cut a new linux-firmware 
release.


Kind regards,

Paul


PS: Josh, do you have a pointer how to reach the commit from the merge 
request?

https://gitlab.com/kernel-firmware/linux-firmware/-/merge_requests/900 
shows 
https://gitlab.com/kernel-firmware/linux-firmware/-/commit/1f806c75e479fea9f222579deb6e69d285b614fc, 
but I do not see a way to get to 
https://gitlab.com/kernel-firmware/linux-firmware/-/commit/fbf93476.


[1]: 
https://lore.kernel.org/all/[email protected]/
[2]: https://gitlab.com/kernel-firmware/linux-firmware/-/commit/fbf93476