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Old 01-21-2011, 08:11 AM   #1
Registered: Jul 2007
Posts: 33

Rep: Reputation: 15
Power Management not working on embedded MIPS when using /sys/power/state


I am attempting to suspend an embedded device running MIPS Linux using:

# echo -n mem > /sys/power/state
-sh: echo: write error: Invalid argument

Any idea's why this is failing?

If I try:
# cat /sys/power/state

there is no output, so something is not quite right and I am not sure where to start looking. From the kernel config screen the Power Management features are on.

Old 01-21-2011, 08:18 AM   #2
Registered: Jul 2007
Posts: 33

Original Poster
Rep: Reputation: 15
Oh, and CONFIG_HOTPLUG=y is defined and the kernel version is 2.6.31.


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