#1110325 Bluetooth: hci0: Reading supported features failed

Package:
src:linux
Source:
src:linux
Submitter:
Francesco Ariis
Date:
2025-08-03 13:03:03 UTC
Severity:
normal
Tags:
#1110325#5
Date:
2025-08-03 11:19:54 UTC
From:
To:
Dear Maintainer,

    I have a kernel-related problem with Bluetooth.

After updating to trixie, during boot, I see this message:

    [   15.025264] Bluetooth: hci0: Reading supported features failed (-16)

If I run `vmlinuz-6.1.0-37-amd64` instead, the problem goes away.

Here the relevant portion of `dmesg`

    [   15.000237] Bluetooth: hci0: Waiting for firmware download to complete
    [   15.000309] Bluetooth: hci0: Firmware loaded in 1558311 usecs
    [   15.000402] Bluetooth: hci0: Waiting for device to boot
    [   15.013320] Bluetooth: hci0: Device booted in 12663 usecs
    [   15.019508] Bluetooth: hci0: Found Intel DDC parameters: intel/ibt-12-16.ddc
    [   15.022282] Bluetooth: hci0: Applying Intel DDC parameters completed
    [   15.023382] Bluetooth: hci0: Firmware revision 0.1 build 19 week 44 2021
    [   15.025264] Bluetooth: hci0: Reading supported features failed (-16)
    [   15.025271] Bluetooth: hci0: Error reading debug features
    [   15.025278] Bluetooth: hci0: HCI LE Coded PHY feature bit is set, but its usage is not supported.
    [   15.043597] Console: switching to colour frame buffer device 240x67
    [   15.063110] i915 0000:00:02.0: [drm] fb0: i915drmfb frame buffer device
    [   15.079867] Bluetooth: MGMT ver 1.23
    [   15.105175] NET: Registered PF_ALG protocol family
    [   15.195903] Bluetooth: RFCOMM TTY layer initialized
    [   15.196342] Bluetooth: RFCOMM socket layer initialized
    [   15.196348] Bluetooth: RFCOMM ver 1.11

Possibly related Kernal bug:
https://bugzilla.kernel.org/show_bug.cgi?id=219387

Thanks
—F