Re: Acpi suspend to ram on Acer Aspire 5672

[Roman Rumisek <romrum@cbox.cz>]

Hi Tomas,

I have this problem on ACER Extensa 5220.
The "save to disk" is OK,but after "save to RAM" the notebook hangs
and seems (for example when i press CapsLock key - nothing) one is dead.

Roman.

Tomas Salfischberger wrote:

> Hi list,
> 
> I don't know what the correct approach to this is, but I need some help
> :-)
> 
> I have been trying to get my Acer Aspire 5672 to suspend to ram, using
> kernel version 2.6.22 patched by Gentoo (r8). The ACPI functions work
> for shutting down the machine, and (but I'm not sure of this) for
> suspend to disk. When I set /sys/power/state to "disk" the power-led
> switches to orange (which it also does when switching to suspend in
> Windows).
> 
> From the above I think that ACPI is working as it should, but when I try
> to suspend to ram the machine switches to the correct state (orange
> power-led) but is unable to resume. When resuming the machine hangs,
> disk spins up but it's not reacting to for example the num-lock key.
> 
> I've read a lot about how suspend to ram is supposed to work, and if I
> understand it correctly the ACPI functions from the BIOS are supposed to
> jump to kernel code when resuming and the kernel should initialize all
> hardware correct? Is there some way to check whether it is actually
> reaching kernel-code, and thus if this might be fixable in kernel?
> 
> I have already tried to patch the DSDT, but to no avail. The errors:
> Some reserved symbols being used and some methods that didn't return a
> value for all controlpaths (notably _WAK which I changed to return
> 0x00,0x00 on the last line).
> 
> Is there anything else I can try?
> 
> Regards,
> Tomas
> 
> P.S. I'm not a native English speaker, so sorry for some weird grammar
> choices.
> 
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