Hi All, Thank for your work on power stuff and it really helps me a lot. I'm very excited about it. Here I'm stuck with an issue when I try to do some power related things on my own. As we know, ACPI defines power savings states of device as: D0--on, D3--off, D2--intermediate. Just like the way we get access to C-states and P-states of CPU via /proc/acpi/ directory, I want to get access to the state of monitor, in some way. The issue occurred to me when I tried to get current state of monitor, that is, to get to know if the monitor is on or off. Furthermore, I want to know if the monitor is set to dimmed or not. The current state of monitor is used by a management programme I'm working on. Specifically, the programme use it to decide to close the monitor to save energy. I know this is already done in powertop by listening to idle state of system for some specified time. But that does not fit my goal very much, so I wonder if getting the current state of monitor is feasible or not.
I will be appreciated if anybody could figure this out for me. Both Feasible way and code snippet will be great. Thank you for your time! -- Best wishes! Simon Gong No pain No gain
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