I’m working on BeagleBone Black, and the kernel version is 3.8.13-bone70. I want to bring the BBB to sleep mode and then wake up by the following commands:
echo mem > /sys/power/state, and results in “echo: write error: No such device”
On the other hand, when I configure RTC wakeup, such as “rtcwake -d /dev/rtc0 -m mem -s 10”, it also shows error.
What should I do with these issues? Please give me a hint.
Thanks a lot…