My system is: Intel CC820 motherboard (which supports PME# wake up for wake on LAN) 3com 3C905C which also supports wake on LAN via PME# Linux 5.5
The motherboard BIOS is later than one that reports an issue with WOL and this particular network card was fixed.
But when I turn off the PC (shutdown or poweroff commands or front panel button), it cannot be restarted via WOL. The network light on the Ethernet card goes off so it looks like power is not being retained on the card.
Although both the card and the motherboard have WOL headers my understanding is that these are not necessary if using PME# - is that correct? (I don't happen to have a WOL cable so can't just try one to confirm).
How can I make Linux shutdown and leave the Ethernet power on?
The common suggestion on the 'net is to remove the "-i" switch from the shutdown script, but it was not present to start with.
At Wed, 06 Oct 2010 21:33:25 +0100 CentOS mailing list centos@centos.org wrote:
My system is: Intel CC820 motherboard (which supports PME# wake up for wake on LAN) 3com 3C905C which also supports wake on LAN via PME# Linux 5.5
The motherboard BIOS is later than one that reports an issue with WOL and this particular network card was fixed.
But when I turn off the PC (shutdown or poweroff commands or front panel button), it cannot be restarted via WOL. The network light on the Ethernet card goes off so it looks like power is not being retained on the card.
Although both the card and the motherboard have WOL headers my understanding is that these are not necessary if using PME# - is that correct? (I don't happen to have a WOL cable so can't just try one to confirm).
Wondering if there is a BIOS setting for enabling PME# (and/or a setting/jumper on the NIC for this as well -- maybe ethtools or the 3COM tool (I believe there is a Linux port available) can set this.
How can I make Linux shutdown and leave the Ethernet power on?
I believe you need configure the power management setting in the BIOS to leave the system in 'standby' mode or something like that, rather than 'power off'. That is, the ACPI 'power off' command yields 'standby' mode (or something like that).
The common suggestion on the 'net is to remove the "-i" switch from the shutdown script, but it was not present to start with. _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
on 10-6-2010 2:27 PM Robert Heller spake the following:
At Wed, 06 Oct 2010 21:33:25 +0100 CentOS mailing list centos@centos.org wrote:
My system is: Intel CC820 motherboard (which supports PME# wake up for wake on LAN) 3com 3C905C which also supports wake on LAN via PME# Linux 5.5
The motherboard BIOS is later than one that reports an issue with WOL and this particular network card was fixed.
But when I turn off the PC (shutdown or poweroff commands or front panel button), it cannot be restarted via WOL. The network light on the Ethernet card goes off so it looks like power is not being retained on the card.
Although both the card and the motherboard have WOL headers my understanding is that these are not necessary if using PME# - is that correct? (I don't happen to have a WOL cable so can't just try one to confirm).
Wondering if there is a BIOS setting for enabling PME# (and/or a setting/jumper on the NIC for this as well -- maybe ethtools or the 3COM tool (I believe there is a Linux port available) can set this.
If the card goes dark when the system is off but still plugged in, the card does not get its power and signal from the pci bus and will need the header cable plugged in. There is no other way... The card HAS to be powered from somewhere at all times so it can activate the system.
On Fri, 08 Oct 2010 16:25:26 -0700, you wrote:
on 10-6-2010 2:27 PM Robert Heller spake the following:
At Wed, 06 Oct 2010 21:33:25 +0100 CentOS mailing list centos@centos.org wrote:
My system is: Intel CC820 motherboard (which supports PME# wake up for wake on LAN) 3com 3C905C which also supports wake on LAN via PME# Linux 5.5
The motherboard BIOS is later than one that reports an issue with WOL and this particular network card was fixed.
If the card goes dark when the system is off but still plugged in, the card does not get its power and signal from the pci bus and will need the header cable plugged in. There is no other way... The card HAS to be powered from somewhere at all times so it can activate the system.
I have now purchased a WOL cable but that has not helped.
There are no options in the BIOS for WOL and I have updated to the latest.
I have found this page http://ubuntuforums.org/showthread.php?t=951563 which refers to using pci-config to force the bus power to be left on for the card prior to shutting down. Could this be the problem and if so where do I get pci-config (or the equivalent) for Centos as I can't identify a package to install that.
On 10/20/2010 01:53 PM, Peter Crighton wrote:
On Fri, 08 Oct 2010 16:25:26 -0700, you wrote:
on 10-6-2010 2:27 PM Robert Heller spake the following:
At Wed, 06 Oct 2010 21:33:25 +0100 CentOS mailing listcentos@centos.org wrote:
My system is: Intel CC820 motherboard (which supports PME# wake up for wake on LAN) 3com 3C905C which also supports wake on LAN via PME# Linux 5.5
The motherboard BIOS is later than one that reports an issue with WOL and this particular network card was fixed.
If the card goes dark when the system is off but still plugged in, the card does not get its power and signal from the pci bus and will need the header cable plugged in. There is no other way... The card HAS to be powered from somewhere at all times so it can activate the system.
I have now purchased a WOL cable but that has not helped.
There are no options in the BIOS for WOL and I have updated to the latest.
I have found this page http://ubuntuforums.org/showthread.php?t=951563 which refers to using pci-config to force the bus power to be left on for the card prior to shutting down. Could this be the problem and if so where do I get pci-config (or the equivalent) for Centos as I can't identify a package to install that. _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
To get mine to work under fedora I had to run ethtool and turn on the wol option. Also it seemed to get reset after used wol to start it up so in my rc.local I put /sbin/ethtool -s eth1 wol g /sbin/ethtool -s eth0 wol g
HTH, Steve
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Peter Crighton -
Robert Heller -
Scott Silva -
Steve Clark