ACPI failures on non-Intel hardware

ACPI failures on non-Intel hardware

[Matthew Garrett]

http://bugzilla.kernel.org/show_bug.cgi?id=3691 describes a fairly
serious ACPI failure. Attempting to wake up from S3 suspend seems to
result in the system rebooting without any wakeup code being run. I've
seen this behaviour on two machines, and had it described to me on a
third. Interestingly, all the machines in question were non-Intel
hardware - one is a VIA C3, and the other two are Athlon XPs (not
Athlon64s). On the test machine I have here, FreeBSD behaves identically
to Linux (seemingly successful suspend, reboot on wake) and Windows
suspends and resumes correctly.

The fact that I've only seen this on systems that didn't have Intel
motherboard chipsets makes me wonder whether there's something going
wrong during the suspend code that happens to work by chance on Intel
(and a few other) chipsets, or alternatively whether these chipsets
manage to fall outside the specs slightly. Any ideas?

-- 
Matthew Garrett | mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org



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Re: ACPI failures on non-Intel hardware

[Nate Lawson]

Matthew Garrett wrote:
> http://bugzilla.kernel.org/show_bug.cgi?id=3691 describes a fairly
> serious ACPI failure. Attempting to wake up from S3 suspend seems to
> result in the system rebooting without any wakeup code being run. I've
> seen this behaviour on two machines, and had it described to me on a
> third. Interestingly, all the machines in question were non-Intel
> hardware - one is a VIA C3, and the other two are Athlon XPs (not
> Athlon64s). On the test machine I have here, FreeBSD behaves identically
> to Linux (seemingly successful suspend, reboot on wake) and Windows
> suspends and resumes correctly.
> 
> The fact that I've only seen this on systems that didn't have Intel
> motherboard chipsets makes me wonder whether there's something going
> wrong during the suspend code that happens to work by chance on Intel
> (and a few other) chipsets, or alternatively whether these chipsets
> manage to fall outside the specs slightly. Any ideas?

Very interesting!  (Thanks for testing FreeBSD also.)  I hadn't noticed 
the common thread in S3 error complaints except that the three classes 
are 1. goes to sleep and immediately wakes, 2. resets while going to 
sleep or waking up, and 3. goes to sleep and never wakes.

One thing you should try is disabling various methods (like _SST) and 
see what happens.  I think _BFS should be run before _SST since the 
7.3.5 says no other method should be run before _BFS.  Also, enabling BM 
arb after sleep may affect things.

I'll test suspend/resume on my new EPIA-M at some point soon.

-- 
Nate


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Re: ACPI failures on non-Intel hardware

[Pavel Machek]

Hi!

> The fact that I've only seen this on systems that didn't have Intel
> motherboard chipsets makes me wonder whether there's something going
> wrong during the suspend code that happens to work by chance on Intel
> (and a few other) chipsets, or alternatively whether these chipsets
> manage to fall outside the specs slightly. Any ideas?

See some Acer machine if you want to see similar failure on Intel
system...
								Pavel
-- 
People were complaining that M$ turns users into beta-testers...
...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl!


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Re: ACPI failures on non-Intel hardware

[Matthew Garrett]

On Sun, 2004-12-12 at 17:41 +0100, Pavel Machek wrote:
> Hi!
> 
> > The fact that I've only seen this on systems that didn't have Intel
> > motherboard chipsets makes me wonder whether there's something going
> > wrong during the suspend code that happens to work by chance on Intel
> > (and a few other) chipsets, or alternatively whether these chipsets
> > manage to fall outside the specs slightly. Any ideas?
> 
> See some Acer machine if you want to see similar failure on Intel
> system...

I thought that case crashed /inside/ the wakeup code, rather than
rebooting before any of it was run?

-- 
Matthew Garrett | mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org



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Re: ACPI failures on non-Intel hardware

[Pavel Machek]

Hi!

> > > The fact that I've only seen this on systems that didn't have Intel
> > > motherboard chipsets makes me wonder whether there's something going
> > > wrong during the suspend code that happens to work by chance on Intel
> > > (and a few other) chipsets, or alternatively whether these chipsets
> > > manage to fall outside the specs slightly. Any ideas?
> > 
> > See some Acer machine if you want to see similar failure on Intel
> > system...
> 
> I thought that case crashed /inside/ the wakeup code, rather than
> rebooting before any of it was run?

I saw some Acer (do not recall model #, sorry, and it was probably
prototype, anyway) where it died before wakeup.
								Pavel
-- 
People were complaining that M$ turns users into beta-testers...
...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl!


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Re: ACPI failures on non-Intel hardware

[Matthew Garrett]

On Sun, 2004-12-12 at 18:15 +0100, Pavel Machek wrote:

> > I thought that case crashed /inside/ the wakeup code, rather than
> > rebooting before any of it was run?
> 
> I saw some Acer (do not recall model #, sorry, and it was probably
> prototype, anyway) where it died before wakeup.

Do you remember whether it had an Intel motherboard chipset, or was an
Intel CPU on something like an ATI chipset?
							
-- 
Matthew Garrett | mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org



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Re: ACPI failures on non-Intel hardware

[Pavel Machek]

Hi!

> > > I thought that case crashed /inside/ the wakeup code, rather than
> > > rebooting before any of it was run?
> > 
> > I saw some Acer (do not recall model #, sorry, and it was probably
> > prototype, anyway) where it died before wakeup.
> 
> Do you remember whether it had an Intel motherboard chipset, or was an
> Intel CPU on something like an ATI chipset?

I think it was centrino (=> Intel chipset), but it was quite long
ago. Another Acer should pop up around me in ~1 month...
								Pavel
-- 
People were complaining that M$ turns users into beta-testers...
...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl!


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RE: ACPI failures on non-Intel hardware

[Li, Shaohua]

>> > I thought that case crashed /inside/ the wakeup code, rather than
>> > rebooting before any of it was run?
>>
>> I saw some Acer (do not recall model #, sorry, and it was probably
>> prototype, anyway) where it died before wakeup.
>
>Do you remember whether it had an Intel motherboard chipset, or was an
>Intel CPU on something like an ATI chipset?
Instead chipset type, I wonder if it's related with BIOS. The two
victims in bug 3691 have AMI BIOS.

-Shaohua


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