linux-kernel - Re: [Regression] Bluetooth mouse broken in 6.12-rc3

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Message-ID: <403e0c87-4619-4349-96fa-36f56f15b8aa@molgen.mpg.de>
Date: Mon, 14 Oct 2024 23:59:43 +0200
From: Paul Menzel <pmenzel@...gen.mpg.de>
To: "Rafael J. Wysocki" <rafael@...nel.org>
Cc: Luiz Augusto von Dentz <luiz.von.dentz@...el.com>,
 Kiran K <kiran.k@...el.com>,
 "Thorsten Leemhuis (regressions address)" <regressions@...mhuis.info>,
 linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-bluetooth@...r.kernel.org, Marcel Holtmann <marcel@...tmann.org>
Subject: Re: [Regression] Bluetooth mouse broken in 6.12-rc3

Dear Rafael,


Thank you for reporting the regression.


Am 14.10.24 um 20:27 schrieb Rafael J. Wysocki:

> Unfortunately, commit 610712298b11 ("Bluetooth: btusb: Don't fail
> external suspend requests") from you that appeared in 6.12-rc3
> prevents my Logitech Bluetooth mouse from connecting to the host
> (btusb).  The LED activity on the mouse indicates that it tries to
> associate, but there is no response.  It looks like the host is
> suspended before the device can connect to it and it cannot be woken
> up for some reason.
> 
> It worked no problem in 6.12-rc2 and the above commit is the only BT
> one in 6.12-rc3.  Also reverting it makes things work again.
> 
> In the "good" case (for example, in 6.12-rc3 with the above commit
> reverted), the following messages are present in the kernel log:
> 
> [  251.748734] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
> [  251.748763] Bluetooth: HIDP socket layer initialized
> [  251.773010] hid-generic 0005:046D:B016.0001: unknown main item tag 0x0
> [  251.774432] input: Bluetooth Mouse M336/M337/M535 Mouse as /devices/pci0000:00/0000:00:14.0/usb1/1-7/1-7:1.0/bluetooth/hci0/hci0:1/0005:046D:B016.0001/input/input14
> [  251.775733] input: Bluetooth Mouse M336/M337/M535 Consumer Control as /devices/pci0000:00/0000:00:14.0/usb1/1-7/1-7:1.0/bluetooth/hci0/hci0:1/0005:046D:B016.0001/input/input15
> [  251.777163] input: Bluetooth Mouse M336/M337/M535 Keyboard as /devices/pci0000:00/0000:00:14.0/usb1/1-7/1-7:1.0/bluetooth/hci0/hci0:1/0005:046D:B016.0001/input/input18
> [  251.815905] hid-generic 0005:046D:B016.0001: input,hidraw0: BLUETOOTH HID v12.03 Mouse [Bluetooth Mouse M336/M337/M535] on 9c:b6:d0:96:8e:c8
> 
> In the "bad" case (for example, in unmodified 6.12-rc3) they are not
> there at all.

This regression has been reported three times already [1][2][3].


Kind regards,

Paul



[1]: 
https://lore.kernel.org/linux-bluetooth/020c69d7-ad86-44d3-a508-22ff949ee7ec@gmail.com/T/#t
[2]: 
https://lore.kernel.org/linux-bluetooth/a34d2761-dad4-4ae7-8787-6bbf05538318@panix.com/T/#t
[3]: https://bugzilla.kernel.org/show_bug.cgi?id=219385