[Bug 209717] New: Bluetooth mouse Logitech M720 doesn't work

[Bug 209717] New: Bluetooth mouse Logitech M720 doesn't work

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209717

            Bug ID: 209717
           Summary: Bluetooth mouse Logitech M720 doesn't work
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.9.0
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Bluetooth
          Assignee: linux-bluetooth@vger.kernel.org
          Reporter: mathieu.ahtec@gmail.com
        Regression: No

My bluetooth mouse stopped working when I moved from the kernel 5.8 to 5.9.

When I tried to pair the mouse without touching it, it didn't work. 

But if I keep on moving the mouse while pairing it, it works.

If I shutdown the computer or the mouse, I have to pair it again.


My Hardware :
Laptop : ASUS Zephyrus G14
CPU : AMD Ryzen 9 4900HS
Mouse : Logitech M720 Triathlon

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[Bug 209717] Bluetooth mouse Logitech M720 doesn't work

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209717

Leho Kraav (leho@kraav.com) changed:

           What    |Removed                     |Added
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                 CC|                            |leho@kraav.com

--- Comment #1 from Leho Kraav (leho@kraav.com) ---
Yes, something is wrong with 5.9 bluetooth stack.

My DELL keyboard and MX Ergo mouse both stop connecting after upgrading from
5.8.

I managed to somehow reconnect them once, but after they disconnect in idle,
they fail to reconnect on their own and no amount of bluetooth toggling gets
them back.

BT toggling shows "[13543.597906] Bluetooth: hci0: HCI reset during shutdown
failed" in demsg.

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[Bug 209717] Bluetooth mouse Logitech M720 doesn't work

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https://bugzilla.kernel.org/show_bug.cgi?id=209717

--- Comment #2 from Leho Kraav (leho@kraav.com) ---
(In reply to Leho Kraav from comment #1)
> Yes, something is wrong with 5.9 bluetooth stack.

PS I went straight to 5.9.1.

00:14.3 Network controller: Intel Corporation Killer Wi-Fi 6 AX1650i 160MHz
Wireless Network Adapter (201NGW) (rev 30) on XPS 7390 2-in-1 Ice Lake.

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[Bug 209717] Bluetooth mouse Logitech M720 doesn't work

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209717

mskmsk (lithium@live.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |lithium@live.com

--- Comment #3 from mskmsk (lithium@live.com) ---
(In reply to Leho Kraav from comment #2)
> (In reply to Leho Kraav from comment #1)
> > Yes, something is wrong with 5.9 bluetooth stack.
> 
> PS I went straight to 5.9.1.
> 
> 00:14.3 Network controller: Intel Corporation Killer Wi-Fi 6 AX1650i 160MHz
> Wireless Network Adapter (201NGW) (rev 30) on XPS 7390 2-in-1 Ice Lake.

Same issue persists on 5.9.1 

03:00.0 Network controller: Intel Corporation Wi-Fi 6 AX200 (rev 1a)
ThinkPad T14 Gen 1 w/ Logitech MX Master 2S

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[Bug 209717] Bluetooth mouse Logitech M720 doesn't work

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https://bugzilla.kernel.org/show_bug.cgi?id=209717

--- Comment #4 from Leho Kraav (leho@kraav.com) ---
I downgraded to 5.8.16 and everything seems to be working fine again across my
home / work locations.

So this does not seem to be about BleedingTooth patches, but something deeper
changed during 5.8 -> 5.9 cycle. Unfortunately I don't have to bandwidth to
bisect.

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[Bug 209717] Bluetooth mouse Logitech M720 doesn't work

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https://bugzilla.kernel.org/show_bug.cgi?id=209717

Mat (mathieu.ahtec@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Regression|No                          |Yes

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[Bug 209717] Bluetooth mouse Logitech M720 doesn't work

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--- Comment #5 from Mat (mathieu.ahtec@gmail.com) ---
Update with the kernel 5.9.2

No need to move the mouse anymore while pairing.

But I still need to repair the mouse everytime the computer/mouse restart.

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[Bug 209717] Bluetooth mouse Logitech M720 doesn't work

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https://bugzilla.kernel.org/show_bug.cgi?id=209717

--- Comment #6 from Leho Kraav (leho@kraav.com) ---
Upgraded to 5.8.16 -> 5.9.6.

Something is definitely not right. Both my mouse and keyboard had to be
re-paired in order to get them to work.

After I left machine idling for 1h+, keyboard wouldn't automatically reconnect,
had to be re-paired again.

I never had any issues with 5.8 and earlier, for as long as I remember.

Is noone knowledgeable about 5.9 BT stack changes really seeing any suspicious
behavior with their devices? Something is clearly off, I'm fairly certain I'm
not imagining things here.

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[Bug 209717] Bluetooth mouse Logitech M720 doesn't work

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https://bugzilla.kernel.org/show_bug.cgi?id=209717

Abhishek Pandit-Subedi (abhishekpandit@chromium.org) changed:

           What    |Removed                     |Added
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                 CC|                            |abhishekpandit@chromium.org

--- Comment #8 from Abhishek Pandit-Subedi (abhishekpandit@chromium.org) ---
This may be a dupe of https://bugzilla.kernel.org/show_bug.cgi?id=209745

A fix was provided recently:
https://patchwork.kernel.org/project/bluetooth/patch/20201029074821.29950-1-sathish.narasimman@intel.com/

If this works for you, please duplicate this bug against the one above.

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