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Subject: [Bug 201239] Resume fails in 10-stable after 248034 on some systems
Date: Wed, 01 Jul 2015 03:20:27 +0000
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X-Bugzilla-Product: Base System
X-Bugzilla-Component: kern
X-Bugzilla-Version: 10.1-STABLE
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X-Bugzilla-Severity: Affects Some People
X-Bugzilla-Who: rkoberman@gmail.com
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=201239

            Bug ID: 201239
           Summary: Resume fails in 10-stable after 248034 on some systems
           Product: Base System
           Version: 10.1-STABLE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs@FreeBSD.org
          Reporter: rkoberman@gmail.com

r284034 broke resume on at least some Lenovo ThinkPads including the x220 and
T520. The failure started after the commit of r284034. When a resume is
requested, the system starts powering up. The disks spin up and the fans start,
but nothing else happens. The power LED continues to pulse, indicating the
system is still suspended. No network as the network card is not restarted.
This occurred when the suspend was done with X running (i915).

After the attempt the system was essentially dead and had to be hard powered
off. After a reboot, nothing had been logged after the suspend.

I manually merged all of the head commits included in this MFC except for
r281874 and the system resumed normally again. 

I have now updated everything to r284916 except for the files modified by
r281874 and everything is working.

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