linux-kernel - 3.18.3->4 : external monitor is black after wakeup of a docked system after s2ram

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Date:	Sat, 31 Jan 2015 16:47:45 +0100
From:	Toralf Förster <toralf.foerster@....de>
To:	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: 3.18.3->4 : external monitor is black after wakeup of a docked system
 after s2ram

Happened 2 times here (but not always) that a docked Lenovo T440s (intel graphic) doesn't show anything at the external display (KDE 4.13.3). System is a hardened stable 64 bit Gentoo Linux

Nothing suspicious in the log however.

Known issue ?

-- 
Toralf
pgp key: 7B1A 07F4 EC82 0F90 D4C2  8936 872A E508 0076 E94E

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