linux-kernel - 4.13 breaks suspend to ram wakeup

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Message-ID: <20170920143656.zuwr5wogjkdrgeav@burischnitzel.preining.info>
Date:   Wed, 20 Sep 2017 23:36:56 +0900
From:   Norbert Preining <norbert@...ining.info>
To:     linux-kernel@...r.kernel.org
Subject: 4.13 breaks suspend to ram wakeup

Hi,

(please Cc)

I recently upgraded my Lenovo X260 from 4.12 to 4.13 and with the very
same software (Debian/sid) 4.13 does not properly wake up from 
suspend to ram.

It wakes up, shows X very quickly, but it seems that the hard disk is 
sleeping and not reacting. I can move the mouse, but the unlock screen 
is not shown.

Switching to the console I can enter the user name, but then I am waiting
for the prompt indefinitely.

Callng Sysrq-s to sync the disks never returns that the sync completed.

Waiting long enough it completely freezes and only Sysrq-b helps.

I have tried to capture any output, but due to the circumstances 
described, nothing can be saved to persist.

I am happy to provide details if someone explains me how to grab them
(sorry, no serial console!), or test patches/suggestions with the kernel.

Thanks

Norbert

please Cc.

--
PREINING Norbert                               http://www.preining.info
Accelia Inc.     +    JAIST     +    TeX Live     +    Debian Developer
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