On Wed, Mar 25, 2015 at 11:35 PM, Matt DeVillier <[email protected]> wrote:
> Greetings all! > > I was wondering if it's possible to have Panther (Asus ChromeBox - > Haswell/Lynxpoint) power on when AC power connected regardless of the > previous power state. Currently, the box will power on if AC power is lost > and the device was powered on, but not if powered off. I have a use case > where it would be convenient to be able to power on the boxes by toggling > AC power (eg, the boxes are not within physical reach). I modified the > CMOS default setting for 'power_on_after_fail' to be enabled and verified > its status with nvramtool. I also tried modifying lpc.c/smihandler.c in > the southbridge code to force MAINBOARD_POWER_ON (rather than > MAINBOARD_POWER_KEEP) in all cases, to no avail. > > Am I approaching this from the wrong angle, or is it perhaps not possible > with these boxes? > > This might be due to the SuperIO instead of the Southbridge. Panther does call it8772f_ac_resume_southbridge() which *should* be making the southbridge the one responsible for the power behavior when AC is applied, but as a first test you could try removing that call to see if the default SuperIO behavior is closer to what you want. -duncan
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