From owner-freebsd-bugs@freebsd.org  Tue Nov 28 16:54:38 2017
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Subject: [Bug 223944] Impossible to add battery while laptop is running
Date: Tue, 28 Nov 2017 16:54:38 +0000
X-Bugzilla-Reason: AssignedTo
X-Bugzilla-Type: new
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X-Bugzilla-Product: Base System
X-Bugzilla-Component: kern
X-Bugzilla-Version: 11.1-RELEASE
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: Affects Many People
X-Bugzilla-Who: vermaden@interia.pl
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D223944

            Bug ID: 223944
           Summary: Impossible to add battery while laptop is running
           Product: Base System
           Version: 11.1-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs@FreeBSD.org
          Reporter: vermaden@interia.pl

ThinkPad T420s (and many other laptops) support a UltraBay battery instead =
of a
CD or HDD drive.

If You boot FreeBSD with this battery inside, everything works ok, but If Y=
ou
boot without it and then insert it as laptop is running already its not use=
d by
FreeBSD.

The error says its not configured:

% acpiconf -i 1
acpiconf: get battery info (1) failed: Device not configured

Similar problem when You switch that UltraBay battery to other ultrabay
battery, the change is not detected.

Regards,
vermaden

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