Re: [ACPI-sppt] clock stops during S4 suspend

On Fri, Jan 09, 2004 at 01:05:44PM -0600, Rockefeller, Harry wrote:
> > Try running
> > echo 4 > /proc/acpi/sleep && hwclock --hctosys
> 
> I use a perl script and attempted the equivalent of the above:
> 
> system('echo 4 > /proc/acpi/sleep') and resume_from_S4();
> 

If I am not mistaken you need
(! system('echo 4 > /proc/acpi/sleep')) and resume_from_S4();
or
resume_from_S4() unless system('echo 4 > /proc/acpi/sleep');

since system returns 0 on success.

> It didn't work.
> 
> This did.
> 
> system('echo 4 > /proc/acpi/sleep');
> resume_from_S4();
> 

This will run resume_from_S4() regardless of whether succeeded.

> Thank you all for your insight and suggestions.
> 
> 
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