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Bug#784262: linux-image-3.16.0-4-686-pae: System hangs at poweroff command



On Mon, 2015-05-04 at 19:23 +0200, Ruben Vorderman wrote:
> Package: src:linux
> Version: 3.16.7-ckt9-3~deb8u1
> Severity: important
> 
> Dear Maintainer,
> 
> I have installed debian jessie last week on my laptop. Since then my system
> hangs when I order it to shutdown. Because of the new init-system I first
> checked whether systemd was to blame using this guide:
> http://freedesktop.org/wiki/Software/systemd/Debugging/
> 
> I started up in recovery mode and issued the "shutdown" command. All services
> were shutdown, all processes were killed etc. But the system hanged at the very
> end, when it needed to go off. I then disabled the system by keeping the power
> button pressed. I restarted again in recovery mode. This time I issued the
> "poweroff -f" command. The system failed to poweroff again and kept hanging.
> The cursor blinked, but I could not ctrl+c and issue new commands.
> 
> According to the guide this is a kernel issue and not systemd's fault. I did
> not have this problem on debian wheezy using the default 3.2 linux-kernel. I
> have attached a sysinfo file in case it may be related to my hardware.
> 
> Could you please look into this issue? Shutting down is a function I use
> multiple times per day using this laptop.

Try suspending, it generally works these days.

> When the laptop refuses to poweroff
> it drains the battery and I can't help but feel that forcing it to poweroff
> with the power button is not healthy for the system.

If you hold down the power button, the embedded controller should shut
off power in just the same way as it would if the OS successfully
commanded it to do so through ACPI.

> I therefore flagged the
> bug as "important" and I hope the fix can help other users who are experiencing
> the same problem. If there is any more information you need I will be glad to
> help. Thank you very much for considering this problem!
[...]

Anyway: you are right that this is important, as it is a regression.

Ben.

-- 
Ben Hutchings
If you seem to know what you are doing, you'll be given more to do.

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