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Date:      Mon, 5 Jan 2015 00:17:12 +1100 (EST)
From:      Ian Smith <smithi@nimnet.asn.au>
To:        juris <juris.kaminskis@gmail.com>
Cc:        freebsd-acpi@freebsd.org
Subject:   Re: [Bug 162859] [acpi] ACPI battery/acline monitoring partialy working (switching)
Message-ID:  <20150104234107.Q82172@sola.nimnet.asn.au>
In-Reply-To: <bug-162859-13733-wjrXNSa1SW@https.bugs.freebsd.org/bugzilla/>
References:  <bug-162859-13733@https.bugs.freebsd.org/bugzilla/> <bug-162859-13733-wjrXNSa1SW@https.bugs.freebsd.org/bugzilla/>

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On Sat, 3 Jan 2015 11:45:05 +0000, bugzilla-noreply@freebsd.org wrote:

Please excuse this off-'zilla merely speculative response.  No time, but 
I've spent (wasted?) some time chasing a couple of these outside the PR.

 > https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=162859
 > 
 > --- Comment #14 from juris <juris.kaminskis@gmail.com> ---
 > Problem on /head/ branch is introduced with revision 216942.

If true (in all cases) this is great news for those with a variety of HP 
laptops that have been experiencing partial - or in some cases complete 
after boot - failures in CMBAT monitoring since 9.0.  And a Macbook Pro.

So, reverting rev 216942 fixes it for you?  On what FreeBSD version?

If so, with scant comprehension of the code, questions that occur:

a) did that revision fix some existing problem, the reverting of which 
might reestablish problem/s in other machines?  jkim?

b) what is it in various HP ACPI implementations that don't seem to be a 
reported problem on other hardware, particularly concerning EC handling?

c) if this was wrong (for HPs), what would be right?  (the hard one :)

cheers, Ian



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