From mboxrd@z Thu Jan  1 00:00:00 1970
From: greg@kroah.com (Greg KH)
Date: Wed, 30 Aug 2017 08:09:55 +0200
Subject: USB keyboard can NOT wakeup from S3( suspend to RAM )
In-Reply-To: <2017081618032184773520@cpu-os.ac.cn>
References: <2017081618032184773520@cpu-os.ac.cn>
Message-ID: <20170830060955.GE3035@kroah.com>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

On Wed, Aug 16, 2017 at 06:03:22PM +0800, jingyun at cpu-os.ac.cn 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.
> 
> 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.

Sounds like your system does not support USB wakeup, which is very
common, sorry.

good luck!

greg k-h