[Bug 223435] [acpi] FreeBSD 12-CURRENT r325397: Battery not charging on HP EliteBook 1040 G1

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=223435

            Bug ID: 223435
           Summary: [acpi] FreeBSD 12-CURRENT r325397: Battery not
                    charging on HP EliteBook 1040 G1
           Product: Base System
           Version: CURRENT
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: neel at neelc.org

When I run FreeBSD 12-CURRENT r325397 on a HP EliteBook 1040 G1, the battery is
not able to charge. If I plug in the laptop, "acpiconf -i 0" shows "high" even
if the battery is not 100% charge, and it stays this way. To fix this, I have
to reboot into Windows, and follow these steps:

https://h30434.www3.hp.com/t5/Notebook-Operating-System-and-Recovery/Laptop-plugged-in-not-charging/td-p/5122059

To do this, I need to have a Torx T9 screwdriver handy to unscrew the bottom
cover. CURRENT r324754 does not have this issue.

I will update a DSDT file shortly.

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