On Mon, 2009-08-24 at 01:12 +0200, Rafael J. Wysocki wrote: > Hi, > > Recently we've had a bug report indicating that WoL doesn't work with e100, > although the driver does everything needed to support it. Apparently, the user > had to echo PCI0 to /proc/acpi/wakeup to make it work. > > After some debugging it turned out that PCI0 is the PCI host bridge > (no-bus:pci0000:00), so apparently echoing PCI0 to /proc/acpi/wakeup causes > a wake-up GPE to be set up for the host bridge which triggers wake-up once > eth0 signals PME#. > > So, it looks like we need to set up wake-up GPE for a host bridge for PME# > from add-on cards to work, at least on this particular box. > > First, I wonder if that's the case in general (anybody knows?). Second, if > that is the case, would it be a good idea to set up the host bridge wake-up GPE > by default? > > Rafael > This is very known problem (at least for me) On my desktop, /proc/acpi/wakeup controls all the wakeup sources, and if disabled, nether addon cards (ethernet) nor internal devices (usb,ethernet) will wake up the system. I think that proc/acpi/wakeup should be synced with power/wakeup attribute. Also, I would be really happy to see bogus (empty) power/wakeup attributes be gone. Also, something is broken in regards to PME from addon cards: http://www.spinics.net/lists/netdev/msg104460.html Best regards, Maxim Levitsky -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
