Arch Linux

balbao

Member

Registered: 2022-01-12

Posts: 2

Bluetooth Regression: linux-firmware-intel 20260410-1 breaks Bluetooth

Hello,

I have identified a Bluetooth regression in linux-firmware-intel version 20260410-1.

SUMMARY
-------
The Bluetooth service starts without errors but does not function at all in version 20260410-1, whereas it works perfectly in version 20260309-1.

HARDWARE
--------
- Laptop: Dell 2-in-1
- Processor: Intel Core Ultra 7 258V (8 cores @ 2.1GHz)
- GPU: Intel Arc Graphics 130V/140V (integrated)
- Bluetooth Chipset: Intel Device a876 (revision 10) - PCI ID: 00:14.7

AFFECTED VERSIONS
-----------------
- ✅ Works: linux-firmware-intel 20260309-1
- ❌ Broken: linux-firmware-intel 20260410-1

OBSERVED BEHAVIOR
-----------------
With version 20260410-1:
- The bluetoothd service starts without errors
- No error messages in dmesg or journalctl logs
- Bluetooth devices do not appear
- No pairing or scanning is possible
- No Bluetooth controller is detected by BlueZ

With version 20260309-1:
- Everything works normally
- Bluetooth devices connect without issues
- Audio headsets, mice, and other BT devices work properly

DIAGNOSIS
---------
The issue is clearly a regression in the Intel Device a876 firmware file between these two versions of the linux-firmware-intel package.

WORKAROUND
----------
I have temporarily downgraded to 20260309-1 and added the following line to /etc/pacman.conf:
IgnorePkg = linux-firmware-intel

REQUEST
-------
Could you investigate what changed in linux-firmware-intel that caused this regression and fix it in a future release?

Thank you in advance.

loqs

Member

Registered: 2014-03-06

Posts: 18,894

Re: Bluetooth Regression: linux-firmware-intel 20260410-1 breaks Bluetooth

Please bisect linux-firmware between the two releases you mention and report the results upstream so the issue can be fixed. Please do not use a large language model when posting.