On 5/18/2011 2:03 AM, Gong Simon wrote: > 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.
for laptops, PowerTOP 1.98 already has this.... _______________________________________________ Power mailing list [email protected] https://bughost.org/mailman/listinfo/power
