[solved] A20 How to disable sleep/susend/hibernate?

[erkobg]

 Hello,
while using through SSH, A20 goes into a sleep mode, and connection ( which is thorough wifi) stops,
and I am not able to start board until I restart it...

This is annoying ...

Is there a way to make board always awake?
Any instructions will be very helpful

[erkobg]

This never happens when board is connected with cable to the LAN,
only happens when connected over wifi with USB stick.

[igorpec]

iwconfig wlan0 power off

Not working on all but you can try.

https://www.raspberrypi.org/forums/viewtopic.php?t=46569&p=666920

[erkobg]

I was able to disable it, following
https://www.raspberrypi.org/forums/viewtopic.php?t=51543&p=397663

The 8192cu kernel module has power management enabled by default:

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$ cat /sys/module/8192cu/parameters/rtw_power_mgnt
1


I was able to disable power management completely by creating /etc/modprobe.d/8192cu.conf with the following contents:

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# Disable power saving
options 8192cu rtw_power_mgnt=0


After creating the file, you will need to reboot. You can confirm that power management is disabled after rebooting by verifying that the value of the rtw_power_mgnt parameter is now 0.

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~ $ cat /sys/module/8192cu/parameters/rtw_power_mgnt
0