suspend works until core pm_test, but the still fails

suspend works until core pm_test, but the still fails

[Ákos Maróy]

Hi,

I'm still trying to make power management work on my HP Envy 15.

I'm experimenting with unloading as many modules as possible, testing
the suspend feature using various levels of /sys/power/pm_test

I managed to get the number of modules as low as these:

Module                  Size  Used by
binfmt_misc             7454  1
bnep                   11287  2
btusb                  12729  2


then I was going through these steps;

echo freezer > /sys/power/pm_test
echo mem > /sys/power/state
echo devices > /sys/power/pm_test
echo mem > /sys/power/state
echo platform > /sys/power/pm_test
echo mem > /sys/power/state
echo processors > /sys/power/pm_test
echo mem > /sys/power/state
echo core > /sys/power/pm_test
echo mem > /sys/power/state

and all these worked fine - meaning that I got back to the console
screen. I also ran dmesg, and didn't see anything suspicious.

but, when I do:

echo none > /sys/power/pm_test
echo mem > /sys/power/state


the machine will still hang :(


what am I doing wrong?

this is all on a 2.6.32.9 kernel


Akos

Re: suspend works until core pm_test, but the still fails

[Ákos Maróy]

so, nobody would have any pointers on how to move forward with the issue
below?

Ákos Maróy wrote:
> Hi,
> 
> I'm still trying to make power management work on my HP Envy 15.
> 
> I'm experimenting with unloading as many modules as possible, testing
> the suspend feature using various levels of /sys/power/pm_test
> 
> I managed to get the number of modules as low as these:
> 
> Module                  Size  Used by
> binfmt_misc             7454  1
> bnep                   11287  2
> btusb                  12729  2
> 
> 
> then I was going through these steps;
> 
> echo freezer > /sys/power/pm_test
> echo mem > /sys/power/state
> echo devices > /sys/power/pm_test
> echo mem > /sys/power/state
> echo platform > /sys/power/pm_test
> echo mem > /sys/power/state
> echo processors > /sys/power/pm_test
> echo mem > /sys/power/state
> echo core > /sys/power/pm_test
> echo mem > /sys/power/state
> 
> and all these worked fine - meaning that I got back to the console
> screen. I also ran dmesg, and didn't see anything suspicious.
> 
> but, when I do:
> 
> echo none > /sys/power/pm_test
> echo mem > /sys/power/state
> 
> 
> the machine will still hang :(
> 
> 
> what am I doing wrong?
> 
> this is all on a 2.6.32.9 kernel
> 
> 
> Akos
> _______________________________________________
> linux-pm mailing list
> linux-pm@lists.linux-foundation.org
> https://lists.linux-foundation.org/mailman/listinfo/linux-pm

Re: suspend works until core pm_test, but the still fails

[Rafael J. Wysocki]

On Thursday 11 March 2010, Ákos Maróy wrote:
> so, nobody would have any pointers on how to move forward with the issue
> below?

Perhaps no one has had the time to look into it yet.

Thanks,
Rafael

Re: suspend works until core pm_test, but the still fails

[Ákos Maróy]

Hi,

I did some additional debugging on my issue below, namely booted the
kernel with the no_console_suspend and initcall_debug options and then:

echo 8 > /proc/sys/kernel/printk
rmmod xhci
echo mem > /sys/power/state

and then I got to the console, the last screen had messages like:

ACPI: Preparing to enter sleep state S3
Broke affinit for irq 25 (same for 26, 27 and 28)
CPU 1 is now offline (same for CPUs 1...8)
SMP alternatives: switching to UP mode
Extended CMOS year: 2000


and then the machine hangs, it doesn't power off.

this is on kernel 2.6.32.9

what could I do to make this work - e.g. the machine power off on
shutdown, and power off on suspend?


Akos