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 ... :o :o :o :o
Is there a way to make board always awake?
Any instructions will be very helpful
This never happens when board is connected with cable to the LAN,
only happens when connected over wifi with USB stick.
iwconfig wlan0 power off
Not working on all but you can try.
https://www.raspberrypi.org/forums/viewtopic.php?t=46569&p=666920
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:
$ 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:
# 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.
~ $ cat /sys/module/8192cu/parameters/rtw_power_mgnt
0