On 10/4/26 18:29, Sasha Levin wrote:
>> In Debian Erik Brangs reported that after the update from 6.12.107 to
>> 6.12.111, specifically with the backport of 980084de4d9b ("Bluetooth:
>> btusb: Add ASUS USB-BT540 for Realtek 8761CU") Bluetooth is not
>> anymore working, the full report is found at
>> https://bugs.debian.org/1149377 .
>>
>> | [ 38.138881] Bluetooth: hci0: RTL: firmware file rtl_bt/rtl8761cu_fw not
>> found
>
> The stable code matches mainline. The failure is a missing firmware file:
> rtl_bt/rtl8761cu_fw.bin has been in linux-firmware only since 20251111,
> and Debian trixie's firmware-realtek 20250410-2 does not have it.
>
> Marcel, Luiz: could you, or Christoph Zwerschke as the author of the ID
> commit, send an upstream revert, or a fallback to ROM firmware when
> rtl8761cu_fw.bin is missing? Stable will take it for 7.2, 6.18 and 6.12
> through the normal Cc: stable route once it is in mainline.
Hmmm, that was a week (granted: with the LPC) ago and nothing happened.
Anyone working on this?
If not: Should we revert 980084de4d9b and its backports? Or only the
backports to older stable series?
Strictly speaking it should be the former due to our policies wrt to
firmware -- but I guess most users of a more recent kernels also have a
newer firmware, so I wonder if reverting the change might do more harm
then good now.
Ciao, Thorsten
