Bug#812196: linux-image-4.4.0-trunk-amd64: Laptop reboot after suspend system

From	Ben Hutchings <ben@decadent.org.uk>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#812196: linux-image-4.4.0-trunk-amd64: Laptop reboot after suspend system
Date	2016-02-16 00:40 +0100
Message-ID	<r2AUi-7WI-9@gated-at.bofh.it> (permalink)
References	<qTn0d-5nD-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Thu, 2016-01-21 at 13:49 +0100, Alexandre wrote:
> Package: src:linux
> Version: 4.4-1~exp1
> Severity: grave
> Justification: renders package unusable
> 
> Dear Maintainer,
> 
> After suspend my laptop (hibernation) i have this message in syslog :
[...]
> Jan 21 12:16:58 debian systemd[1]: Reached target Sleep.
> Jan 21 12:16:58 debian systemd[1]: Starting Suspend...
> Jan 21 12:16:58 debian systemd-sleep[4293]: Suspending system...

That indicates suspend-to-RAM, not hibernation.

> When i try to resume my laptop reboot with this message in syslog :
> 
> Jan 21 13:41:51 debian kernel: [    0.657877] PM: Hibernation image not present
> or could not be loaded.

This is unsurprising because it was never hibernated.  But of course it
should have resumed from RAM, not rebooted.

Could you please follow the instructions in
https://www.kernel.org/doc/Documentation/power/basic-pm-debugging.txt
to find out which step goes wrong?

[...]
> Jan 21 13:41:51 debian kernel: [    0.661340] ------------[ cut here
> ]------------
> Jan 21 13:41:51 debian kernel: [    0.661343] WARNING: CPU: 2 PID: 1 at /build
> /linux-tEELBQ/linux-4.4/arch/x86/mm/dump_pagetables.c:225
> note_page+0x5e1/0x790()
> Jan 21 13:41:51 debian kernel: [    0.661344] x86/mm: Found insecure W+X
> mapping at address ffff88000005f000/0xffff88000005f000
[...]

This warning is known to appear on amd64 systems booting through UEFI,
and I've found a fix for that which should be included in version
4.4.2-1.

Ben.

-- 
Ben Hutchings
The most exhausting thing in life is being insincere. - Anne Morrow Lindberg

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Bug#812196: linux-image-4.4.0-trunk-amd64: Laptop reboot after suspend system Alexandre <ar.community@devnco.fr> - 2016-01-21 14:00 +0100
  Processed: Re: Bug#812196: linux-image-4.4.0-trunk-amd64: Laptop  reboot after suspend system owner@bugs.debian.org (Debian Bug Tracking System) - 2016-02-16 00:40 +0100
  Processed: Re: Bug#812196: linux-image-4.4.0-trunk-amd64: Laptop  reboot after suspend system owner@bugs.debian.org (Debian Bug Tracking System) - 2016-02-16 00:40 +0100
  Bug#812196: linux-image-4.4.0-trunk-amd64: Laptop reboot after suspend system Ben Hutchings <ben@decadent.org.uk> - 2016-02-16 00:40 +0100

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