Bug 223944 - Impossible to add battery while laptop is running
Summary: Impossible to add battery while laptop is running
Status: Closed Feedback Timeout
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: 11.1-RELEASE
Hardware: amd64 Any
: --- Affects Many People
Assignee: freebsd-acpi (Nobody)
Depends on:
Reported: 2017-11-28 16:54 UTC by vermaden
Modified: 2020-10-28 19:17 UTC (History)
1 user (show)

See Also:


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Description vermaden 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.

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 vermaden 2019-07-16 11:30:37 UTC
Any updates for 11.3-RELEASE on that topic?
Comment 3 vermaden 2020-10-28 19:17:07 UTC
Laptop vendors mostly do not offer live replace batteries anymore.