On Thu, 11 Aug 2011, Sarah Sharp wrote: > Is there anything special I should need to do in order to make a key > press bring a system out of suspend? I was trying to test Andiry's > remote wakeup bug fixes, and I can't get a USB keyboard to wakeup the > system. > > In fact, I can't even get it to wake up the system when it's > plugged in under EHCI! But my PS2 keyboard does wakeup the system, so > I'm a bit stumped. > > I've looked in my BIOS settings, and there's some settings for what can > "power on" the system, but all of them (including the PS2 keyboard > setting) are disabled. I'm not sure if those apply to booting the > system for the first time, or bringing the system out of suspend, but I > suspect it's not the latter because my PS2 keyboard brings the system > out of suspend. > > I've tested with two different keyboards (verifying both times that > power/wakeup reads as enabled), and even tried to echo enabled to > power/wakeup for a mouse, but that didn't wake up the system either. > I've tried with two different boxes: one is a development platform, and > another is an off-the-shelf ASUS motherboard. The dev platform has an > integrated "rate matching" hub (so no companion controllers), but the > ASUS platform has UHCI companion controllers. > > I was running 3.0.0-rc7 on this box, but I also rebooted into a generic > Ubuntu 2.6.38 kernel, and that didn't work either. Can anyone else > cause USB remote wakeup to bring a system out of suspend? In principle, all you should need is to echo "enabled" to the power/wakeup attribute for the keyboard in question, possibly for the root hub ancestor device (it should be enabled by default), and for the PCI USB controller device. I won't have time to investigate very much during the rest of this week. If you haven't solved it by next week, I'll look into it some more. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
