Hello, I have a udoo quad board with official android 6.0 img file, and I am trying to use the suspend to ram function by running this command in usb console : "echo mem > /sys/power/state" But the result is weird, after print some output from console the system just reboot in the normal way instead of sleeping. Here is the console output : [ 1132.213544] PM: suspend entry 2016-01-01 00:18:47.751679134 UTC [ 1132.219486] PM: Syncing filesystems ... done. [ 1132.226601] Freezing user space processes ... (elapsed 0.001 seconds) done. [ 1132.235057] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done. [ 1132.267857] PM: suspend of devices complete after 23.734 msecs [ 1132.273727] PM: suspend devices took 0.030 seconds [ 1132.278900] PM: late suspend of devices complete after 0.374 msecs [ 1132.285580] PM: noirq suspend of devices complete after 0.478 msecs [ 1132.291850] Disabling non-boot CPUs ... [ 1132.296327] CPU1: shutdown [ 1132.300234] CPU2: shutdown [ 1132.304014] CPU3: shutdown Is this situation normal?