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From: greg@kroah.com (Greg KH)
To: kernelnewbies@lists.kernelnewbies.org
Subject: USB keyboard can NOT wakeup from S3( suspend to RAM )
Date: Wed, 30 Aug 2017 08:09:55 +0200	[thread overview]
Message-ID: <20170830060955.GE3035@kroah.com> (raw)
In-Reply-To: <2017081618032184773520@cpu-os.ac.cn>

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

  reply	other threads:[~2017-08-30  6:09 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-16 10:03 USB keyboard can NOT wakeup from S3( suspend to RAM ) jingyun at cpu-os.ac.cn
2017-08-30  6:09 ` Greg KH [this message]
2017-08-30  6:55   ` valdis.kletnieks at vt.edu
2017-08-30 22:38   ` jingyun at cpu-os.ac.cn
2017-08-31  7:16     ` Greg KH
2017-09-05  1:51       ` jingyun at cpu-os.ac.cn
2017-08-30  7:45 ` Andrey Skvortsov
2017-08-30 23:06   ` jingyun at cpu-os.ac.cn
2017-09-05  6:32     ` Martin Kepplinger
2017-09-05  2:20       ` jingyun at cpu-os.ac.cn

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