Bug#1000881: firmware-iwlwifi: No Bluetooth controller detected with kernel 5.15

Léo Girardin

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Nov 30, 2021, 11:50:04 AM11/30/21

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Package: firmware-iwlwifi
Version: 20210818-1
Severity: important

Dear Maintainer,

* What led up to the situation?
Kernel upgrade from 5.14.0-4 to 5.15.0-1

* What exactly did you do (or not do) that was effective (or
ineffective)?
Open the Bluetooth window in Gnome preferences to pair my laptop with
an external device.

Also, enter `show` in bluetoothctl prompt.

* What was the outcome of this action?
In Gnome preferences, it is written (in French) "Pas de réseau
Bluetooth trouvé", which translates as "No detected Bluetooth network"
(I guess).

In bluetoothctl, `show` returns No default controller available.

* What outcome did you expect instead?
Before the kernel upgrade Bluetooth was working fine. My laptop has an
Intel AX200 wireless controller that requires firmware-iwlwifi. Wifi
is still functionning as usual.
If I reboot and select in Grub the previous kernel 5.14.0-4, Bluetooth
is working again.

-- System Information:
Debian Release: bookworm/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 5.15.0-1-amd64 (SMP w/8 CPU threads)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

firmware-iwlwifi depends on no packages.

firmware-iwlwifi recommends no packages.

Versions of packages firmware-iwlwifi suggests:
ii initramfs-tools 0.140

-- no debconf information

Salvatore Bonaccorso

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Nov 30, 2021, 5:00:03 PM11/30/21

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Control: tags -1 + moreinfo

On Tue, Nov 30, 2021 at 12:42:03PM +0100, Léo Girardin wrote:
> Package: firmware-iwlwifi
> Version: 20210818-1
> Severity: important
>
> Dear Maintainer,
>
> * What led up to the situation?
> Kernel upgrade from 5.14.0-4 to 5.15.0-1
>
> * What exactly did you do (or not do) that was effective (or
> ineffective)?
> Open the Bluetooth window in Gnome preferences to pair my laptop with
> an external device.
>
> Also, enter `show` in bluetoothctl prompt.
>
> * What was the outcome of this action?
> In Gnome preferences, it is written (in French) "Pas de réseau
> Bluetooth trouvé", which translates as "No detected Bluetooth network"
> (I guess).
>
> In bluetoothctl, `show` returns No default controller available.
>
> * What outcome did you expect instead?
> Before the kernel upgrade Bluetooth was working fine. My laptop has an
> Intel AX200 wireless controller that requires firmware-iwlwifi. Wifi
> is still functionning as usual.
> If I reboot and select in Grub the previous kernel 5.14.0-4, Bluetooth
> is working again.

I suspect this is the same as #1000403, please can you retest with
5.15.5-1 in unstable (and 5.16~rc3-1~exp1 from experimental)?

Regards,
Salvatore

Léo Girardin

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Dec 3, 2021, 2:30:04 PM12/3/21

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Le 30/11/2021 à 22:53, Salvatore Bonaccorso a écrit :
> I suspect this is the same as #1000403, please can you retest with
> 5.15.5-1 in unstable (and 5.16~rc3-1~exp1 from experimental)?

Sorry for the late reply and thank you. I can confirm that with
the new kernel 5.15.0-2 in testing, Bluetooth is back and working.

It must be the same as #1000403 indeed.

Salvatore Bonaccorso

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Dec 4, 2021, 7:40:03 AM12/4/21

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Control: reassign -1 src:linux
Control: forcemerge 1000403 -1

Hi Léo,

Thanks for confirming!

Regards,
Salvatore