Acpi suspend to ram on Acer Aspire 5672

Acpi suspend to ram on Acer Aspire 5672

[Tomas Salfischberger]

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.

Re: Acpi suspend to ram on Acer Aspire 5672

[Roman Rumisek]

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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> the body of a message to majordomo@vger.kernel.org
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Re: Acpi suspend to ram on Acer Aspire 5672

[Tomas Salfischberger]

Hi,

Roman Rumisek wrote:
> 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.
>   

I also received an off-list reply from Peter Pregler about his Acer TM
3200 having the same issues.

What we need to debug this is some method of first finding out whether
the kernel-code is actually reached during the resume process. If it is
actually executing kernel-code, we need to debug at which point in
hardware initialization it gets stuck.

Peter mentioned we need serial-port access (or a special firewire-cable)
to debug. Do you have a docking-station?

An other approach would be to patch the kernel to use the system-speaker
to output some debug beeps. I'll look into that the next moment I have a
few spare hours, probably Thursday.

Just to get more details: Is the "Acer Extensa 5220" a dual core model?

Thanks for your reply,

Tomas

Re: Acpi suspend to ram on Acer Aspire 5672

[Roman Rumisek]

Hi,

Tomas Salfischberger wrote:

> Hi,
> 
> Roman Rumisek wrote:
>> 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.
>>   
> 
> I also received an off-list reply from Peter Pregler about his Acer TM
> 3200 having the same issues.
> 
> What we need to debug this is some method of first finding out whether
> the kernel-code is actually reached during the resume process. If it is
> actually executing kernel-code, we need to debug at which point in
> hardware initialization it gets stuck.
> 
> Peter mentioned we need serial-port access (or a special firewire-cable)
> to debug. Do you have a docking-station?

No, only notebook.

> 
> An other approach would be to patch the kernel to use the system-speaker
> to output some debug beeps. I'll look into that the next moment I have a
> few spare hours, probably Thursday.
> 
> Just to get more details: Is the "Acer Extensa 5220" a dual core model?

May be, but I have notebook with D530 Celeron.

Roman


> 
> Thanks for your reply,
> 
> Tomas
> -
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