[4.6-rcX regression] closing and opening LID on thinkpad x200s freezes X

From: Jiri Kosina
Date: Wed Apr 06 2016 - 18:00:44 EST


Hi,

after updating to 4.6-rcX (where X is 1 or 2, doesn't really matter) on
thinkpad x200s notebook with

00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)

closing and opening the lid freezes the computer completely (after opening
the LID, I can see either the complete original contents of the screen, or
silouhette of xscreensaver window decorations, but the machine is dead by
then (neither ctrl-alt-backspace-backspace nor switching to text console
doesn't work).

It definitely worked with older kernels, but I unfortunately don't have
all the data needed for bisection, as the old kernels have been wiped off
the machine in the meantime.

Is this a known issue?

Thanks,

--
Jiri Kosina
SUSE Labs