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! 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? :) But even if that's the case, why there's a difference between "just" power-off and power-off when suspending? The kernel is 2.6.31 vanilla. Thanks! /mjt _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
