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<div><span></span>Hi, Greg</div><div><br></div><div>Thanks for your time.</div>
<div>First of all, if I do NOT hit the keyboard during the suspend.</div><div>Then my keyboard CAN wake the system up from suspend.</div><div>This has rule out that my system does NOT support USB wakeup. Right ?</div><div><br></div><div>Thanks again.</div><div><br></div><div>Jim</div><hr style="width: 210px; height: 1px; display: none;" color="#b5c4df" size="1" align="left">
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<blockquote style="margin-top: 0px; margin-bottom: 0px; margin-left: 0.5em;"><div> </div><div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm"><div style="PADDING-RIGHT: 8px; PADDING-LEFT: 8px; FONT-SIZE: 12px;FONT-FAMILY:tahoma;COLOR:#000000; BACKGROUND: #efefef; PADDING-BOTTOM: 8px; PADDING-TOP: 8px"><div><b>From:</b> <a href="mailto:greg@kroah.com">Greg KH</a></div><div><b>Date:</b> 2017-08-30 14:09</div><div><b>To:</b> <a href="mailto:jingyun@cpu-os.ac.cn">jingyun@cpu-os.ac.cn</a></div><div><b>CC:</b> <a href="mailto:kernelnewbies@kernelnewbies.org">kernelnewbies</a></div><div><b>Subject:</b> Re: USB keyboard can NOT wakeup from S3( suspend to RAM )</div></div></div><div><div>On Wed, Aug 16, 2017 at 06:03:22PM +0800, jingyun@cpu-os.ac.cn wrote:</div>
<div>> hi, there</div>
<div>> </div>
<div>> thx in advance;</div>
<div>> </div>
<div>> I encounter a strange (maybe) bug:</div>
<div>> During the suspending of my linux box(which runs debian 9), I hit the key of</div>
<div>> the USB interfaced keyboard;</div>
<div>> after making sure the box enter suspend state for a while ( which I can tell</div>
<div>> from the power LED blinks), </div>
<div>> I can NOT wakeup it by hit that keyboard any more.</div>
<div>> But if I do NOT hit the key during the suspending, I CAN wake it up by hitting</div>
<div>> the keyboard.</div>
<div>> </div>
<div>> After that I tried Ubuntu 16.04(runs 4.4 version kernel ) and Ubuntu 14.04 (</div>
<div>> 3.13 kernel).</div>
<div>> And I found all of them got the same problem;</div>
<div>> </div>
<div>> Do not know if this is the right place to ask. Just a try.</div>
<div> </div>
<div>Sounds like your system does not support USB wakeup, which is very</div>
<div>common, sorry.</div>
<div> </div>
<div>good luck!</div>
<div> </div>
<div>greg k-h</div>
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