On 3/26/2015 9:49 AM, Duncan Laurie wrote: > On Wed, Mar 25, 2015 at 11:35 PM, Matt DeVillier <[email protected] > <mailto:[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.
Hi Duncan, I tried removing the call as suggested, but it didn't change the behavior at all. Any thoughts as to where to look next? thanks! -Matt > > -duncan >
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