kernel since 2.6.35.8 has issue. When system suspend to ram, it can't be wake up by moveing the USB mouse. USB keyboard has no such issue. and other PS/2 Keyboard/Mouse works well.
I guess plugging/unplugging the USB mouse can wakeup the system, right?
> kernel since 2.6.35.8 has issue Does that mean that moving the USB mouse woke the system in 2.6.35.7?
Lots of USB mice have this problem, especially optical mice. During suspend they don't have enough power to illuminate the LED, so they can't tell when they are moved. On the other hand, you may find that pressing the mouse buttons once or twice will wake up the computer.
so this doesn't sound like a real bug, right? :p
(In reply to comment #3) > Lots of USB mice have this problem, especially optical mice. During suspend > they don't have enough power to illuminate the LED, so they can't tell when > they are moved. > > On the other hand, you may find that pressing the mouse buttons once or twice > will wake up the computer. About the USB mice issue with kernel later than 2.6.35.8, i don't try the kernel 2.6.35.7. but have tried 2.6.36.2, the USB mouse can't wake up the system from suspend. Not only moving the mouse, pressing the mouse button even plug/unplug the USB mouse ,it can't wake up system from suspend too. With kernel 2.6.33 , there is no such issue. Is the ACPI spec changed or other issues with the kernel ?
A recent change may account for these problems: You now have to enable wakeup explicitly for USB controllers. For example, if the mouse is attached to bus 2 then you have to do: echo enabled >/sys/bus/usb/devices/usb2/../power/wakeup
(In reply to comment #6) > A recent change may account for these problems: You now have to enable wakeup > explicitly for USB controllers. For example, if the mouse is attached to bus > 2 > then you have to do: > > echo enabled >/sys/bus/usb/devices/usb2/../power/wakeup Tried this method, also tried to set all the USB settings to enabled in /proc/acpi/wakeup. the move or click the USB mouse button, Still can't wake up from suspend. Is the kernel issue ?
I don't know if it is a kernel issue. Can you post the relevant wakeup settings in your sysfs files? I want to verify that they are all set correctly. And attach a copy of your /sys/kernel/debug/usb/devices file. Also, can you build a 2.6.36.y kernel with CONFIG_USB_DEBUG enabled? I'd like to see the dmesg log following a suspend where you unplug the mouse while the system is asleep. We can also try some runtime-suspend testing. But let's do this other stuff first. If we are unable to find the cause, you can still track it down by doing a git bisect search between the 2.6.33 and 2.6.35.8 kernels.