Bug#1149377: linux-image-6.12.111+deb13-amd64: Bluetooth no longer works after kernel upgrade

From	Salvatore Bonaccorso <carnil@debian.org>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1149377: linux-image-6.12.111+deb13-amd64: Bluetooth no longer works after kernel upgrade
Date	2026-10-01 09:40 +0200
Message-ID	<NJjyx-2S00-1@gated-at.bofh.it> (permalink)
References	(3 earlier) <NJ969-2Mqd-5@gated-at.bofh.it> <NIKr7-2zfo-7@gated-at.bofh.it> <NJjyx-2S00-3@gated-at.bofh.it> <NIKr7-2zfo-7@gated-at.bofh.it> <NJjyx-2S00-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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Hi Erik,

On Wed, Sep 30, 2026 at 10:51:54PM +0200, Erik Brangs wrote:
> Hi,
> 
> 4a23ce935f74 does not apply cleanly to v6.12.111
> 
> diff --cc drivers/bluetooth/btrtl.c
> index 6bb068dee6d2,5603b282f9bc..000000000000
> --- a/drivers/bluetooth/btrtl.c
> +++ b/drivers/bluetooth/btrtl.c
> @@@ -1317,7 -1317,7 +1317,11 @@@ void btrtl_set_quirks(struct hci_dev *h
>         case CHIP_ID_8922A:
>         case CHIP_ID_8852BT:
>         case CHIP_ID_8761C:
> ++<<<<<<< HEAD
>  +              set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
> ++=======
> +               hci_set_quirk(hdev, HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED);
> ++>>>>>>> 4a23ce935f74 (Bluetooth: btrtl: Add the support for RTL8761CUV)
>                 /* RTL8852C needs to transmit mSBC data continuously without
>                  * the zero length of USB packets for the ALT 6 supported chips
> 
> 
> or to the first bad commit f05baf6e0680d8c10d2fbbc5953848fc3e3db957
> 
> diff --cc drivers/bluetooth/btrtl.c
> index 49b74827344c,5603b282f9bc..000000000000
> --- a/drivers/bluetooth/btrtl.c
> +++ b/drivers/bluetooth/btrtl.c
> @@@ -1306,7 -1316,8 +1317,12 @@@ void btrtl_set_quirks(struct hci_dev *h
>         case CHIP_ID_8851B:
>         case CHIP_ID_8922A:
>         case CHIP_ID_8852BT:
> ++<<<<<<< HEAD
>  +              set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
> ++=======
> +       case CHIP_ID_8761C:
> +               hci_set_quirk(hdev, HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED);
> ++>>>>>>> 4a23ce935f74 (Bluetooth: btrtl: Add the support for RTL8761CUV)
>                 /* RTL8852C needs to transmit mSBC data continuously without
>                  * the zero length of USB packets for the ALT 6 supported chips

Apologies, this is my error. The mentioned commit 4a23ce935f74 *is*
already part of 6.12.111 upstream, so we have here a different issue
to report upstream caused by the
f05baf6e0680d8c10d2fbbc5953848fc3e3db957 commit.

I'm looping in Ben, who said yesterday in the kernel-team meeting to
look into this issue as well.

but I think we should bring this new problem to upstream regressions
list as wel.

Regards,
Salvatore

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Bug#1149377: linux-image-6.12.111+deb13-amd64: Bluetooth no longer works after kernel upgrade Salvatore Bonaccorso <carnil@debian.org> - 2026-09-30 17:10 +0200
  Processed: Re: Bug#1149377: linux-image-6.12.111+deb13-amd64:  Bluetooth no longer works after kernel upgrade "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-09-30 17:10 +0200
  Bug#1149377: linux-image-6.12.111+deb13-amd64: Bluetooth no longer works after kernel upgrade Salvatore Bonaccorso <carnil@debian.org> - 2026-09-30 22:30 +0200
    Processed: Re: Bug#1149377: linux-image-6.12.111+deb13-amd64:  Bluetooth no longer works after kernel upgrade "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-09-30 22:30 +0200
    Bug#1149377: linux-image-6.12.111+deb13-amd64: Bluetooth no longer works after kernel upgrade Salvatore Bonaccorso <carnil@debian.org> - 2026-10-01 09:40 +0200

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