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Bug#1028116: linux-image-6.0.0-4-amd64: Bluetooth no longer working with Mediatek MT7921K chipset

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Sorry for my mistake. I upgraded to 6.0.12-1 and still no bluetooth. I 
additionally downgraded to 5.10.149-2, and that version had no bluetooth 
and no wifi support either. I wasn't able to even install 5.19.11-1; I 
suspect 5.19 may have been the last version I had installed where 
bluetooth actually worked.

I don't know how to install experimental kernel versions on testing, but 
I'm willing to try it out or compile it myself.

Matthew

On 1/7/23 1:40 AM, Salvatore Bonaccorso wrote:
> Control: tags -1 + moreinfo
>
> Hi Matthew,
>
> On Fri, Jan 06, 2023 at 09:24:11PM -0800, Matthew McAllister wrote:
>> Package: src:linux
>> Version: 6.0.8-1
>> Severity: normal
>> Tags: upstream
>> X-Debbugs-Cc: matthew.mcallister.0@gmail.com
>>
>> Dear Maintainer,
>>
>> Bluetooth is no longer usable with this chipset on this kernel version.
>> /sys/class/bluetooth is not present after booting or rebooting. There are no
>> lines relating to bluetooth in dmesg. Here is the relevant part of lsmod:
>> mt7921e                32768  0
>> mt7921_common          94208  1 mt7921e
>> mt76_connac_lib        73728  2 mt7921e,mt7921_common
>> mt76                  106496  3 mt7921e,mt7921_common,mt76_connac_lib
>> mac80211             1159168  3 mt76,mt7921_common,mt76_connac_lib
>> cfg80211             1118208  4 mt76,mac80211,mt7921_common,mt76_connac_lib
>>
>> WiFi *does* continue to work with this chipset. Only bluetooth seems to be
>> affected.
> As 6.0.8-1 is not the most recent kernel in testing, can you test with
> 6.0.12-1 as well, or ideally even better with 6.1.2-1~exp1? Does the
> problem persist there?
>
> If yes, would you be able to bisect against an older known working
> kernel version to identify where the problem arise and got introduced?
>
> Regards,
> Salvatore

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Bug#1028116: linux-image-6.0.0-4-amd64: Bluetooth no longer working with Mediatek MT7921K chipset Salvatore Bonaccorso <carnil@debian.org> - 2023-01-07 10:50 +0100
  Bug#1028116: linux-image-6.0.0-4-amd64: Bluetooth no longer working with Mediatek MT7921K chipset Matthew McAllister <matthew.mcallister.0@gmail.com> - 2023-01-07 20:00 +0100
    Bug#1028116: linux-image-6.0.0-4-amd64: Bluetooth no longer working with Mediatek MT7921K chipset Salvatore Bonaccorso <carnil@debian.org> - 2023-01-07 21:50 +0100
      Bug#1028116: linux-image-6.0.0-4-amd64: Bluetooth no longer working with Mediatek MT7921K chipset Matthew McAllister <matthew.mcallister.0@gmail.com> - 2023-01-27 07:50 +0100

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