[Bug 215776] New: Unable to reconnect Bluetooth keyboard after disconnection

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=215776

            Bug ID: 215776
           Summary: Unable to reconnect Bluetooth keyboard after
                    disconnection
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.13.0-37
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Bluetooth
          Assignee: linux-bluetooth@vger.kernel.org
          Reporter: zacmarco@gmail.com
        Regression: No

Good morning,

kernel 5.13.0-37.

zacmarco@ZacBuild:~$ uname -a
Linux ZacBuild 5.13.0-37-generic #42~20.04.1-Ubuntu SMP Tue Mar 15 15:44:28 UTC
2022 x86_64 x86_64 x86_64 GNU/Linux

I have a bluetooth keyboard that goes automatically in power save mode after a
few minutes IDLE (I think 3). After this happens, a key press is enough to wake
the keyboard up again. In these conditions, I am not able to reconnect the
keyboard, I see the bluetooth subsystem trying to connect, but it keeps
disconnecting immediately, without even a chance of typing a single char.
Whenever this happens, I see the following in the kernel logs:

[ 1004.980840] Lockdown: systemd-logind: hibernation is restricted; see man
kernel_lockdown.7
[ 1009.107227] evdi: [I] (card0) Connector state: connected
[ 1009.107297] evdi: [I] (card0) Edid property set

Matter of fact, the only way I have to restore normal functionality is to pair
the keyboard again, like it was connected for the first time.

The issue appears in all the following cases:

- I don't use the keyboard for a few minutes (going to power-save mode)
- I do a keyboard power cycle
- I reboot the PC

Looking at existing issues, this seems similar to the following:

https://bugzilla.kernel.org/show_bug.cgi?id=204765

That however has been resolved a couple of years back.

I use this keyboard on a Windows PC as well, and there I don't have any issues
(so it should not be a keyboard problem).

Please let me know if you need additional debug information.
Thank you

  Marco

-- 
You may reply to this email to add a comment.

You are receiving this mail because:
You are the assignee for the bug.