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<div>Hi Valdis,</div>
<div>Actually i am trying to understand linux kernel power management stuff,what i am trying to do is simply i want my lcd light never go into sleep state, without bothering about whether my system is in freeze state or S2RAM state simply kind of resume/suspend
mechanism as i am very new to linux pm i need bit info about it.</div>
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<div><font size="2"><span style="font-size:11pt">i am checking following but i didnt find any clue<br>
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<div><font size="2"><span style="font-size:11pt">$ grep . /sys/class/wakeup/wakeup*/device/power/wakeup</span></font><br>
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<div>/sys/class/wakeup/wakeup16/device/power/wakeup:enabled
<div>/sys/class/wakeup/wakeup17/device/power/wakeup:enabled</div>
<div>/sys/class/wakeup/wakeup18/device/power/wakeup:enabled</div>
<div>/sys/class/wakeup/wakeup19/device/power/wakeup:enabled</div>
<div>/sys/class/wakeup/wakeup20/device/power/wakeup:enabled</div>
<div>/sys/class/wakeup/wakeup21/device/power/wakeup:enabled</div>
<div>/sys/class/wakeup/wakeup22/device/power/wakeup:enabled</div>
<div>/sys/class/wakeup/wakeup24/device/power/wakeup:enabled</div>
<div>/sys/class/wakeup/wakeup32/device/power/wakeup:enabled</div>
<div>/sys/class/wakeup/wakeup7/device/power/wakeup:enabled</div>
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Thanks!<br>
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<b>From:</b> Valdis Kletnieks on behalf of Valdis Klštnieks<br>
<b>Sent:</b> Tuesday, November 3, 2020 12:28 PM<br>
<b>To:</b> Pankaj Vinadrao Joshi<br>
<b>Cc:</b> kernelnewbies@kernelnewbies.org<br>
<b>Subject:</b> Re: power management
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<div class="PlainText">On Tue, 03 Nov 2020 06:45:29 +0000, "Pankaj Vinadrao Joshi" said:<br>
> with this my whole system is going into supend state but specifically i want my<br>
> lcd backlight or wifi in Active state without considering the state of system<br>
<br>
What use will the lcd backlight be when your graphics subsystem is powered down?<br>
<br>
And unless your wifi supports wake-on-lan, leaving it active won't do anything, because<br>
any received packets won't be processed.<br>
<br>
What problem are you trying to solve here?<br>
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