Am 31.08.2017 01:06 schrieb jingyun@xxxxxxxxxxxx: > Hi, Andrey > > Q: > Do you mean that wakeup by keyboard doesn't work only if PC was > suspended by pressing special suspend key on your keyboard? > > Answer： > No. > Wakeup by keyboard doesn't work only if I pressing the keyboard (fast > enough) during the suspend. > It has nothing to do with suspending method. > > Q: > And if it was suspended by from operating system or by pressing button > on case wakeup by keyboard does work? > > Answer: > The problem has nothing to do with suspending method. > Whatever the suspending method is( from desktop or echo mem > > /sys/power/stat ), if I do NOT hit the keyboard during the suspend, > then > wakeup by keyboard does work. > But if I hit the keyboard fast enough during the suspend, then after > the suspend the keyboard seems dead. > And wakeup by keyboard does NOT work any more. > > Thanks for your time. > > Jim > > ------------------------- > >> FROM: Andrey Skvortsov >> DATE: 2017-08-30 15:45 >> TO: jingyun@xxxxxxxxxxxx >> CC: kernelnewbies >> SUBJECT: Re: USB keyboard can NOT wakeup from S3( suspend to RAM ) >> >> On 17-08-16 18:03, jingyun@xxxxxxxxxxxx wrote: >>> hi, there >>> >>> thx in advance; >>> >>> I encounter a strange (maybe) bug: >>> During the suspending of my linux box(which runs debian 9), I hit >> the key of the USB interfaced keyboard; >>> after making sure the box enter suspend state for a while ( which >> I can tell from the power LED blinks), >>> I can NOT wakeup it by hit that keyboard any more. >>> But if I do NOT hit the key during the suspending, I CAN wake it >> up by hitting the keyboard. >> >> Do you mean that wakeup by keyboard doesn't work only if PC was >> suspended by pressing special suspend key on your keyboard? >> And if it was suspended by from operating system or by pressing >> button >> on case wakeup by keyboard does work? >> >>> After that I tried Ubuntu 16.04(runs 4.4 version kernel ) and >> Ubuntu 14.04 ( 3.13 kernel). >>> And I found all of them got the same problem; >>> >>> Do not know if this is the right place to ask. Just a try. >>> >>> Thanks again. Sounds like a bug. Doesn't *have* to be in the kernel though. At least it sounds like pressing buttons "during" suspending resets a state to resumed before it actually suspended - preventing to resume... Is it an ordanary usb keyboard? Could you append the output of lsmod, the modules you are using and lsusb? _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
