On Thursday 01 October 2009, Michael Tokarev wrote: > Rafael J. Wysocki wrote: > > On Wednesday 30 September 2009, Michael Tokarev wrote: > >> Hello. > >> > >> I've several PCs here which are able to wakeup - > >> among others - from PS/2 and/or USB keyboard. > >> Here for testing I'm using PS/2 keyboard and > >> Asus M3A78-EM motherboard. > >> > >> When I do poweroff from linux, the keyboard > >> stays powered up as it should (according to > >> the BIOS settings). But when I do suspend, > >> keyboard is NOT powered anymore, and hence > >> the system can't be woken up from it but only > >> by using the power button. > >> > >> This happens consistently for many kernel > >> versions. To be fair, I don't even know if > >> there was any kernel which does not show this > >> behaviour: old versions was unable to do > >> suspend/resume cycle on this platform at all. > >> > >> Any hints for this please? > > > > With USB, I think keyboard wake-up is off by default as it causes some > > systems to wake up immediately after suspending. Alan and Oliver can provide > > more info about that. > > Actually I wasn't able to get any machine to resume based on > USB devices - notable keyboard, be it sleep/power button (on > the keyboards that have it) or any other combination of keys > configured in the BIOS. Most motherboards I tried are from > Asus, one or two from Gigabyte and one more from Biostar. > > That's why I use PS/2=>USB adaptor, to connect an USB keyboard > to a PS/2 port - this one works just fine, with all the mobos > I tried (provided the appropriate BIOS settings are turned on > and ever exists, to start with). > > > I don't know about PS/2. > > > > Can you post the contents of /proc/acpi/wakeup from one of these systems, > > please? > > Hm. That's.. curious. Here we go, my home machine whihc I turn > on every day from a PS/2-connected keyboard: > > Device S-state Status Sysfs node > PCE2 S4 disabled > PCE3 S4 disabled > PCE4 S4 disabled > PCE5 S4 disabled > PCE6 S4 disabled pci:0000:00:06.0 > RLAN S4 disabled pci:0000:02:00.0 > PCE7 S4 disabled > PCE9 S4 disabled > PCEA S4 disabled > PCEB S4 disabled > PCEC S4 disabled > SBAZ S4 disabled pci:0000:00:14.2 > PS2K S4 disabled pnp:00:09 > UAR1 S4 disabled pnp:00:0a > P0PC S4 disabled pci:0000:00:14.4 > UHC1 S4 disabled pci:0000:00:12.0 > UHC2 S4 disabled pci:0000:00:12.1 > UHC3 S4 disabled pci:0000:00:12.2 > USB4 S4 disabled pci:0000:00:13.0 > UHC5 S4 disabled pci:0000:00:13.1 > UHC6 S4 disabled pci:0000:00:13.2 > UHC7 S4 disabled pci:0000:00:14.5 > > It's all disabled! Thanks. In fact, the 'disabled' column doesn't really mean totally disabled. It means one of the mechanisms one can use is disabled. For PCI, 'disabled' in this column shouldn't really matter any more. > But I *know* it wakes up > from network and from ps/2 keyboard at least! > In the corresponding BIOS menu almost everything > is enabled (excluding RTC alarm, but including > USB events). This is an Asus motherboard, M3A-78EM, > with latest BIOS. > > Here's another one, Gigabyte's GA-MA74GM-S2H, > which definitely wakes on network: > > Device S-state Status Sysfs node > PCI0 S5 disabled no-bus:pci0000:00 > USB0 S3 disabled pci:0000:00:12.0 > USB1 S3 disabled pci:0000:00:12.1 > USB2 S3 disabled pci:0000:00:12.2 > USB3 S3 disabled pci:0000:00:13.0 > USB4 S3 disabled pci:0000:00:13.1 > USB5 S3 disabled pci:0000:00:13.2 > USB6 S3 disabled pci:0000:00:14.5 > SBAZ S4 disabled pci:0000:00:14.2 > P2P S5 disabled pci:0000:00:14.4 > PCE2 S4 disabled > PCE3 S4 disabled > PCE4 S4 disabled > PCE5 S4 disabled > PCE6 S4 disabled pci:0000:00:06.0 > PCE7 S4 disabled > PCE8 S4 disabled > > hmm. Blaming BIOS, as usual? :) Nope. For the majority of devices we disable wake-up by default. > But even if that's the case, why there's a difference > between "just" power-off and power-off when suspending? These two cases are handled differently by BIOSes. Can you please check if /sys/devices/.../power/wakeup contains 'enabled' for the PCI devices called USB0 - USB6 above? > The kernel is 2.6.31 vanilla. Better use 2.6.32-rc for debugging this. Thanks, Rafael _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
