Bug 223944

Summary:	Impossible to add battery while laptop is running
Product:	Base System	Reporter:	Slawomir Wojciech Wojtczak <vermaden>
Component:	kern	Assignee:	freebsd-acpi (Nobody) <acpi>
Status:	Closed Feedback Timeout
Severity:	Affects Many People	CC:	allanjude
Priority:	---
Version:	11.1-RELEASE
Hardware:	amd64
OS:	Any

Description Slawomir Wojciech Wojtczak 2017-11-28 16:54:38 UTC

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

Comment 1 Allan Jude freebsd_committer

2018-05-24 12:45:11 UTC

I have also seen this on my T530 with the extra battery attached via the bottom docking port.

Comment 2 Slawomir Wojciech Wojtczak 2019-07-16 11:30:37 UTC

Any updates for 11.3-RELEASE on that topic?

Comment 3 Slawomir Wojciech Wojtczak 2020-10-28 19:17:07 UTC

Laptop vendors mostly do not offer live replace batteries anymore.