* [Bug 221637] Regression for Intel Corporation Device a876 (rev 10)
2026-06-10 19:46 [Bug 221637] New: Regression for Intel Corporation Device a876 (rev 10) bugzilla-daemon
@ 2026-06-10 20:03 ` bugzilla-daemon
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From: bugzilla-daemon @ 2026-06-10 20:03 UTC (permalink / raw)
To: linux-bluetooth
https://bugzilla.kernel.org/show_bug.cgi?id=221637
Bianca Fürstenau (furstenau+kernelbugWGvWw1PW1l@posteo.net) changed:
What |Removed |Added
----------------------------------------------------------------------------
Regression|No |Yes
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^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug 221637] Regression for Intel Corporation Device a876 (rev 10)
2026-06-10 19:46 [Bug 221637] New: Regression for Intel Corporation Device a876 (rev 10) bugzilla-daemon
2026-06-10 20:03 ` [Bug 221637] " bugzilla-daemon
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From: bugzilla-daemon @ 2026-06-11 14:29 UTC (permalink / raw)
To: linux-bluetooth
https://bugzilla.kernel.org/show_bug.cgi?id=221637
Pierre-Olivier Vallès (nibheis@gmail.com) changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |nibheis@gmail.com
--- Comment #1 from Pierre-Olivier Vallès (nibheis@gmail.com) ---
FYI, same bug on same hardware was also reported downstream here:
https://gitlab.archlinux.org/archlinux/packaging/packages/linux-firmware/-/work_items/45
From https://gitlab.com/kernel-firmware/linux-firmware.git:
commit 99a2479f94e13da021288b016ec55243ac31fae5 (2026-01-16): works
commit ed10eae8facb3b4bf2da7104cec95afdf0209114 (2026-03-13): fails
commit 7df47664dd1d94111858b3224c15908517c73e73 (2026-04-23): fails
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^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug 221637] Regression for Intel Corporation Device a876 (rev 10)
2026-06-10 19:46 [Bug 221637] New: Regression for Intel Corporation Device a876 (rev 10) bugzilla-daemon
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From: bugzilla-daemon @ 2026-06-11 14:36 UTC (permalink / raw)
To: linux-bluetooth
https://bugzilla.kernel.org/show_bug.cgi?id=221637
--- Comment #2 from Pierre-Olivier Vallès (nibheis@gmail.com) ---
I added in CC one of the author of the last 2 commits.
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From: bugzilla-daemon @ 2026-06-11 14:41 UTC (permalink / raw)
To: linux-bluetooth
https://bugzilla.kernel.org/show_bug.cgi?id=221637
--- Comment #3 from Pierre-Olivier Vallès (nibheis@gmail.com) ---
Author of commit ed10eae8facb3b4bf2da7104cec95afdf0209114 is ravindra@intel.com
but there are no corresponding bugzilla.kernel.org account.
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^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug 221637] Regression for Intel Corporation Device a876 (rev 10)
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From: bugzilla-daemon @ 2026-06-11 17:18 UTC (permalink / raw)
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https://bugzilla.kernel.org/show_bug.cgi?id=221637
Paul Menzel (pmenzel+bugzilla.kernel.org@molgen.mpg.de) changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pmenzel+bugzilla.kernel.org
| |@molgen.mpg.de
--- Comment #4 from Paul Menzel (pmenzel+bugzilla.kernel.org@molgen.mpg.de) ---
I also commented on the [Linux firmware merge
request](https://gitlab.com/kernel-firmware/linux-firmware/-/merge_requests/955).
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^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug 221637] Regression for Intel Corporation Device a876 (rev 10)
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From: bugzilla-daemon @ 2026-06-12 6:57 UTC (permalink / raw)
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https://bugzilla.kernel.org/show_bug.cgi?id=221637
The Linux kernel's regression tracker (Thorsten Leemhuis) (regressions@leemhuis.info) changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |regressions@leemhuis.info
--- Comment #5 from The Linux kernel's regression tracker (Thorsten Leemhuis) (regressions@leemhuis.info) ---
This bugzilla is likely the wrong place for this and most other bugs.
Last time it iirc was a mail CCed to the linux-firmware maintainers that got
things rolling:
https://lore.kernel.org/all/f689f4a3-e5fa-40d3-9038-8ddc12eec241@leemhuis.info/
Ideally someone affected would do that (please CC me) -- while specifying the
exact commit that needs to be reverted.
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^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug 221637] Regression for Intel Corporation Device a876 (rev 10)
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To: linux-bluetooth
https://bugzilla.kernel.org/show_bug.cgi?id=221637
--- Comment #6 from Paul Menzel (pmenzel+bugzilla.kernel.org@molgen.mpg.de) ---
Bianca sent a message to the mailing list: [REGRESSION] Intel Corporation
Device a876 (rev 10) firmware crashes since ed10eae8 [1].
[1]:
https://lore.kernel.org/all/635e5e63-dc67-4dac-8590-d613582c94c8@posteo.net/
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From: bugzilla-daemon @ 2026-06-14 23:41 UTC (permalink / raw)
To: linux-bluetooth
https://bugzilla.kernel.org/show_bug.cgi?id=221637
Kiran (kiran.k@intel.com) changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kiran.k@intel.com
--- Comment #7 from Kiran (kiran.k@intel.com) ---
Hi Biance, Paul,
Appreciate if you can test and feedback with the below patch.
https://kernel.googlesource.com/pub/scm/linux/kernel/git/bluetooth/bluetooth-next/+/5917dd39db2bfc8b1b4c6ea8ed99adb4badef707
Seeing the error pattern in dmesg, appears like the issue has been fixed
already and the patch is present in bluetooth-next,
Thanks,
Kiran
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To: linux-bluetooth
https://bugzilla.kernel.org/show_bug.cgi?id=221637
--- Comment #8 from The Linux kernel's regression tracker (Thorsten Leemhuis) (regressions@leemhuis.info) ---
Krian:
> the below patch.
FWIW a quick reminder, "[…] updated firmware files must not cause any
regressions for users of older kernel releases." -- that is a quote from
https://docs.kernel.org/driver-api/firmware/firmware-usage-guidelines.html
So fixing this with a kernel patch is nice, but by kernel standards this from
what I see still qualifies as a regression where the firmware change needs to
be reverted to avoid the problem.
That being said: if we assume that this is a corner case that only Bianca and
maybe one or two others hits, then using a patch is fine if it's fine for the
affected people. Is that the case?
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^ permalink raw reply [flat|nested] 11+ messages in thread* [Bug 221637] Regression for Intel Corporation Device a876 (rev 10)
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From: bugzilla-daemon @ 2026-06-15 14:49 UTC (permalink / raw)
To: linux-bluetooth
https://bugzilla.kernel.org/show_bug.cgi?id=221637
--- Comment #9 from Bianca Fürstenau (furstenau+kernelbugWGvWw1PW1l@posteo.net) ---
I applied the patch and it mostly worked.
Quick note: I was unable to figure out how to non-manually get a patch file
from the googlesource site and this incurred several hours of delay while I did
something else before I had the idea of trying to find the patch on kernel.org:
https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/patch/?id=5917dd39db2bfc8b1b4c6ea8ed99adb4badef707
When I applied the patch to 7.0.11, the Bluetooth worked with the current
firmware and the dmesg logs looked the same as with the old firmware except for
timings and version identifiers. When I applied the patch to 7.0.12, the
Bluetooth still worked but there were a lot of gp1 mailbox interrupts and new
warnings in the dmesg logs. This seems unexpected to me, but if it seems
expected to Kiran et al., I do not have any further issue with this. If it
seems unexpected to you, too, it might warrant further investigation.
Am I seeing correctly that the patch is already in 7.1.0? If so, it seems
unnecessary to revert anything for me as my understanding of the release
strategy of NixOS for the configuration I am running is that my next kernel
will be 7.1.0 anyway. If I am wrong about that, the consequence is only that
applying updates takes me an hour instead of a few minutes at most if one of
the updates was to the kernel. Definitely quite annoying, but also not terribly
prohibitive, as the device stays usable during the update process. (Still,
nothing I would look forward to doing a dozen times until 7.2.0 releases or
something.)
Linux 7.0.11 with 5917dd39, Firmware 20260519 $ sudo dmesg | grep -i bluetooth
[ 31.058834] Bluetooth: Core ver 2.22
[ 31.058854] NET: Registered PF_BLUETOOTH protocol family
[ 31.058855] Bluetooth: HCI device and connection manager initialized
[ 31.058860] Bluetooth: HCI socket layer initialized
[ 31.058862] Bluetooth: L2CAP socket layer initialized
[ 31.058864] Bluetooth: SCO socket layer initialized
[ 31.085847] Bluetooth: hci0: Device revision is 0
[ 31.085852] Bluetooth: hci0: Secure boot is enabled
[ 31.085854] Bluetooth: hci0: OTP lock is disabled
[ 31.085855] Bluetooth: hci0: API lock is enabled
[ 31.085855] Bluetooth: hci0: Debug lock is disabled
[ 31.085856] Bluetooth: hci0: Minimum firmware build 1 week 10 2014
[ 31.085858] Bluetooth: hci0: Bootloader timestamp 2023.33 buildtype 1 build
45995
[ 31.086590] Bluetooth: hci0: Found device firmware:
intel/ibt-0190-0291-iml.sfi
[ 31.086594] Bluetooth: hci0: Boot Address: 0x30098800
[ 31.086595] Bluetooth: hci0: Firmware Version: 99-13.26
[ 31.142382] Bluetooth: hci0: Waiting for firmware download to complete
[ 31.142386] Bluetooth: hci0: Firmware loaded in 54485 usecs
[ 31.144680] Bluetooth: hci0: Waiting for device to boot
[ 31.144682] Bluetooth: hci0: Device booted in 2235 usecs
[ 31.144683] Bluetooth: hci0: Waiting for device transition to d0
[ 31.144683] Bluetooth: hci0: Device moved to D0 in 0 usecs
[ 31.144815] Bluetooth: hci0: dsbr: enable: 0x01 value: 0x0b
[ 31.148426] Bluetooth: hci0: Found device firmware:
intel/ibt-0190-0291-pci.sfi
[ 31.148435] Bluetooth: hci0: Boot Address: 0x10000800
[ 31.148436] Bluetooth: hci0: Firmware Version: 99-13.26
[ 31.684955] Bluetooth: hci0: Waiting for firmware download to complete
[ 31.684977] Bluetooth: hci0: Firmware loaded in 523972 usecs
[ 31.721113] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 31.721318] Bluetooth: hci0: Waiting for device to boot
[ 31.721770] Bluetooth: hci0: Device booted in 35918 usecs
[ 31.721773] Bluetooth: hci0: Waiting for device transition to d0
[ 31.721837] Bluetooth: hci0: Device moved to D0 in 61 usecs
[ 31.722508] Bluetooth: hci0: Found Intel DDC parameters:
intel/ibt-0190-0291-pci.ddc
[ 31.722682] Bluetooth: hci0: Applying Intel DDC parameters completed
[ 31.723019] Bluetooth: hci0: Firmware timestamp 2026.13 buildtype 1 build
117603
[ 31.723022] Bluetooth: hci0: Firmware SHA1: 0xde043160
[ 31.723308] Bluetooth: hci0: Fseq status: Success (0x00)
[ 31.723311] Bluetooth: hci0: Fseq executed: 00.00.04.202
[ 31.723312] Bluetooth: hci0: Fseq BT Top: 00.00.04.202
[ 33.048540] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 33.048544] Bluetooth: BNEP socket layer initialized
[ 33.049844] Bluetooth: MGMT ver 1.23
[ 43.952601] Bluetooth: RFCOMM TTY layer initialized
[ 43.952611] Bluetooth: RFCOMM socket layer initialized
[ 43.952613] Bluetooth: RFCOMM ver 1.11
Linux 7.0.12 with 5917dd39, Firmware 20260519 $ sudo dmesg | grep -i bluetooth
[ 235.299907] Bluetooth: Core ver 2.22
[ 235.299924] NET: Registered PF_BLUETOOTH protocol family
[ 235.299925] Bluetooth: HCI device and connection manager initialized
[ 235.299929] Bluetooth: HCI socket layer initialized
[ 235.299932] Bluetooth: L2CAP socket layer initialized
[ 235.299935] Bluetooth: SCO socket layer initialized
[ 235.340849] Bluetooth: hci0: Device revision is 0
[ 235.340854] Bluetooth: hci0: Secure boot is enabled
[ 235.340854] Bluetooth: hci0: OTP lock is disabled
[ 235.340855] Bluetooth: hci0: API lock is enabled
[ 235.340855] Bluetooth: hci0: Debug lock is disabled
[ 235.340856] Bluetooth: hci0: Minimum firmware build 1 week 10 2014
[ 235.340857] Bluetooth: hci0: Bootloader timestamp 2023.33 buildtype 1 build
45995
[ 235.341842] Bluetooth: hci0: Found device firmware:
intel/ibt-0190-0291-iml.sfi
[ 235.341845] Bluetooth: hci0: Boot Address: 0x30098800
[ 235.341846] Bluetooth: hci0: Firmware Version: 99-13.26
[ 235.403312] Bluetooth: hci0: Waiting for firmware download to complete
[ 235.403315] Bluetooth: hci0: Firmware loaded in 60029 usecs
[ 235.405554] Bluetooth: hci0: Waiting for device to boot
[ 235.405579] Bluetooth: hci0: Device booted in 2206 usecs
[ 235.405580] Bluetooth: hci0: Waiting for device transition to d0
[ 235.405580] Bluetooth: hci0: Device moved to D0 in 0 usecs
[ 235.405731] Bluetooth: hci0: dsbr: enable: 0x01 value: 0x0b
[ 235.408475] Bluetooth: hci0: Found device firmware:
intel/ibt-0190-0291-pci.sfi
[ 235.408482] Bluetooth: hci0: Boot Address: 0x10000800
[ 235.408482] Bluetooth: hci0: Firmware Version: 99-13.26
[ 235.653214] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.653367] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.653539] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.653673] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.654661] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.654798] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.654998] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.655161] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.656670] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.656790] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.676405] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.676593] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.680410] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.680540] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.680908] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.681047] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.684592] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.684693] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.684817] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.684924] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.685464] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.685583] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.685708] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.685831] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.689008] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.689155] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.690617] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.690721] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.694404] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.694523] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.694671] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.694785] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.695897] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.696005] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.696186] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.696299] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.699381] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.699483] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.701368] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.701469] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.702431] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.702535] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.703859] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.703953] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.704123] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.704230] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.704426] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.704528] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.704714] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.704803] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.705816] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.705899] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.706020] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.706147] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.706801] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.706905] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.710379] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.710481] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.710639] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.710747] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.716898] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.717012] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.718284] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.718378] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.718593] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.718679] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.719490] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.719575] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.719732] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.719816] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.721102] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.721200] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.721444] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.721541] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.723024] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.723163] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.724594] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.724685] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.725061] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.725141] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.725816] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.725918] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.878235] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.878324] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.878449] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.878530] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.885430] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.885514] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.886566] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.886633] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.886755] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.886847] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.914645] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.914746] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1003)
[ 235.963268] Bluetooth: hci0: Waiting for firmware download to complete
[ 235.963274] Bluetooth: hci0: Firmware loaded in 541794 usecs
[ 235.999442] Bluetooth: hci0: Received gp1 mailbox interrupt
[ 235.999526] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db100f)
[ 235.999536] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db100f)
[ 235.999659] Bluetooth: hci0: Waiting for device to boot
[ 236.000092] Bluetooth: hci0: Device booted in 35942 usecs
[ 236.000093] Bluetooth: hci0: Waiting for device transition to d0
[ 236.000158] Bluetooth: hci0: Controller device warning (boot_stage:
0xa0db1007)
[ 236.000162] Bluetooth: hci0: Device moved to D0 in 67 usecs
[ 236.001511] Bluetooth: hci0: Found Intel DDC parameters:
intel/ibt-0190-0291-pci.ddc
[ 236.001689] Bluetooth: hci0: Applying Intel DDC parameters completed
[ 236.002010] Bluetooth: hci0: Firmware timestamp 2026.13 buildtype 1 build
117603
[ 236.002012] Bluetooth: hci0: Firmware SHA1: 0xde043160
[ 236.002292] Bluetooth: hci0: Fseq status: Success (0x00)
[ 236.002293] Bluetooth: hci0: Fseq executed: 00.00.04.202
[ 236.002294] Bluetooth: hci0: Fseq BT Top: 00.00.04.202
[ 236.035455] Bluetooth: hci0: Controller device warning (boot_stage:
0xa09b1047)
[ 237.596110] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 237.596115] Bluetooth: BNEP socket layer initialized
[ 237.598181] Bluetooth: MGMT ver 1.23
[ 250.315840] Bluetooth: RFCOMM TTY layer initialized
[ 250.315848] Bluetooth: RFCOMM socket layer initialized
[ 250.315852] Bluetooth: RFCOMM ver 1.11
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