Find out wakeup reason

nunojpg · 09-23-2019, 02:36 AM

After wakeup from sleep (echo mem > /sys/power/state), is there a reliable way, beside parsing dmesg, of finding it the wakeup was due to Button, RTC, or USB power?

OS is 5.12 (Linux 4.1).

Thanks!

knc1 · 09-23-2019, 08:50 AM

What all have you tried and with what result?
(5.12.anything is rather new, you may be the first to have tried its behavior in this case.)

NiLuJe · 09-23-2019, 10:28 AM

An rtc wakeup may trigger some extra logging from some of Amazon's stuff. But then again, maybe not if it wasn't setup by Amazon stuff ^^.

Otherwise, I don't think there's anything relevant in sysfs on those older kernels, but it can't hurt to take a look.

yparitcher · 09-23-2019, 03:20 PM

try:

Code:

	
POWERD_STATES=`lipc-get-prop -s com.lab126.powerd state`
if [ "$POWERD_STATES" == "screenSaver" ] || [ "POWERD_STATES" == "suspended" ] ; then
	  # caused by RTC not by button press
fi

see https://www.mobileread.com/forums/showthread.php?t=322900 for more details, tested on 5.11

knc1 · 09-26-2019, 09:10 AM

Quote:

Originally Posted by yparitcher

. . . .
see https://www.mobileread.com/forums/showthread.php?t=322900 for more details, tested on 5.11

It has been almost a month now and you still haven't "attached the script".
(Use the "go advanced" editor choice to find and use the attachment functions.)

09-23-2019, 02:36 AM	#1
nunojpg Junior Member Posts: 6 Karma: 10 Join Date: Sep 2019 Device: KT4	Find out wakeup reason After wakeup from sleep (echo mem > /sys/power/state), is there a reliable way, beside parsing dmesg, of finding it the wakeup was due to Button, RTC, or USB power? OS is 5.12 (Linux 4.1). Thanks!

09-23-2019, 08:50 AM	#2
knc1 Going Viral Posts: 17,212 Karma: 18210809 Join Date: Feb 2012 Location: Central Texas Device: No K1, PW2, KV, KOA	What all have you tried and with what result? (5.12.anything is rather new, you may be the first to have tried its behavior in this case.) Last edited by knc1; 09-23-2019 at 08:53 AM.

09-23-2019, 03:20 PM	#4
yparitcher Connoisseur Posts: 52 Karma: 616590 Join Date: Feb 2019 Device: K4 KT4 PW4 PW5	try: Code: POWERD_STATES=`lipc-get-prop -s com.lab126.powerd state` if [ "$POWERD_STATES" == "screenSaver" ] \|\| [ "POWERD_STATES" == "suspended" ] ; then # caused by RTC not by button press fi see https://www.mobileread.com/forums/showthread.php?t=322900 for more details, tested on 5.11

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09-23-2019, 10:28 AM	#3
NiLuJe BLAM! Posts: 13,506 Karma: 26047202 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	An rtc wakeup may trigger some extra logging from some of Amazon's stuff. But then again, maybe not if it wasn't setup by Amazon stuff ^^. Otherwise, I don't think there's anything relevant in sysfs on those older kernels, but it can't hurt to take a look.

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