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Date:      Sat, 29 Apr 2017 13:50:17 +0200
From:      Manuel =?iso-8859-15?Q?St=FChn?= <freebsdnewbie@freenet.de>
To:        freebsd-current@freebsd.org
Subject:   regression suspend/resume on Lenovo T420
Message-ID:  <20170429115017.GA98553@freebsd-t420.fritz.box>

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Hi,
I'd been sucessfully running CURRENT on my Lenovo T420 with functional 
suspend/resume since some time. But after updating to CURRENT r317032 
respectively r317559 suspend/resume does not work anymore. Putting it 
into suspend results only in a black screen, but no further action is 
possible (only pressing the powerbutton for some time to switch it off 
completely). The LEDs are not indicating any suspend mode.
If i try to suspend it with X (intel-driver) stopped, the laptop does 
switch into suspend, but does not resume. It runs into some kind of 
resuming endless loop, where it tries to start the laptop again but at a 
certain point it restarts again. The screen stays dark all the time.

I tried this with and without the following options but the same result.
hw.acpi.reset_video=1
dev.acpi_ibm.0.handlerevents='0x04'

Booting a Bootenvironment with an older CURRENT(r315141), all is 
working.  Was there any change between these commits concerning 
suspend/resume?

BR
Manuel



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