Re: Debugging spurious wakeup

[Gianluca Anzolin <gianluca@sottospazio.it>]

On Wed, May 13, 2015 at 08:30:41AM +0000, Zhang, Rui wrote:
> 04:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection
> 	Kernel driver in use: e1000e
> 	Kernel modules: e1000e
> PXSX	  S4	*enabled   pci:0000:04:00.0
> 
> Please run "echo PXSX > /proc/acpi/wakeup" before shutdown and then checks if
> the problem still exists.

Thank you for directions. Here follows what I did:

root@zanac:~$ echo PXSX > /proc/acpi/wakeup
root@zanac:~$ cat /proc/acpi/wakeup | grep PX
PXSX      S4    *disabled
PXSX      S4    *disabled
PXSX      S4    *disabled
PXSX      S4    *disabled
PXSX      S4    *disabled
PXSX      S4    *enabled   pci:0000:04:00.0
PXSX      S4    *enabled   pci:0000:06:00.0
root@zanac:$ poweroff

Then after 2-3 seconds the system turns on.

The echo command didn't work: infact I double checked, it didn't change the
wakeup status.

But if I disabled the wakeup would WOL packets still work?

I ask because if I disable 'Wake-up by PCIe' in the BIOS the system stays off,
but I need the WOL functionality.

Currently ethtool eth0 says:

        Supports Wake-on: pumbg
        Wake-on: g
        Current message level: 0x00000007 (7)
                               drv probe link

This should only allow magic-packets to wake up the system. To be sure I even
disconnected the cable from the NIC. Unfortunately it still turns on by itself.

Thanks,

Gianluca

> 
> Thanks,
> Rui
> 
> > -----Original Message-----
> > From: Gianluca Anzolin [mailto:gianluca@sottospazio.it]
> > Sent: Wednesday, May 13, 2015 4:26 PM
> > To: Zhang, Rui
> > Cc: linux-acpi@vger.kernel.org
> > Subject: Re: Debugging spurious wakeup
> > Importance: High
> > 
> > On Wed, May 13, 2015 at 08:13:46AM +0000, Zhang, Rui wrote:
> > > Hmm, none of them seems to be NIC related, can you please attach the
> > output of lspci -vvxx as well?
> > >
> > 
> > file attached (with I blanked the mac address)
> > 
> > Gianluca