Possible workaround for buggy S5

Possible workaround for buggy S5

[Phillip Susi]

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A user has reported in debian bug #694926 that their laptop battery
discharges rapidly when they shutdown, unless they disable hwclock
- --systohc in the shutdown scripts.  I am not sure why that triggers
it, but I can only assume that their acpi firmware is buggy and
remaining in standby to allow for wakeups.

Is there a way to bypass the acpi firmware S5 transition and force the
system to truly power off as a workaround?

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Re: Possible workaround for buggy S5

[Aaron Lu]

On 02/12/2014 10:31 PM, Phillip Susi wrote:
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> Hash: SHA1
> 
> A user has reported in debian bug #694926 that their laptop battery
> discharges rapidly when they shutdown, unless they disable hwclock
> - --systohc in the shutdown scripts.  I am not sure why that triggers
> it, but I can only assume that their acpi firmware is buggy and
> remaining in standby to allow for wakeups.
> 
> Is there a way to bypass the acpi firmware S5 transition and force the
> system to truly power off as a workaround?

No idea about this. Long time ago, François Boisson reported a similar
issue on kernel bugzilla:
https://bugzilla.kernel.org/show_bug.cgi?id=47811

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