[Bug 223944] Impossible to add battery while laptop is running

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=223944

            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 at FreeBSD.org
          Reporter: vermaden at 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 You
boot without it and then insert it as laptop is running already its not used 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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