The original use of power_on_after_fail was for HPC server nodes that we wanted to power on after an external power failure without having to go to 1024 nodes and touch a button (this was a real issue at Los Alamos and IIRC the fix came from Linux NetworX). This is LONG before laptops were a gleam in our eye.
I'm not surprised that it doesn't fit the laptop use case that well.
ron
On Sat, May 2, 2015 at 4:44 AM Iru Cai mytbk920423@gmail.com wrote:
Hi,
After I set CONFIG_USE_OPTION_TABLE, my laptop will power on when I plug in the AC adapter. Then I find disabling `power_on_after_fail' will prevent my laptop from booting when AC is plugged in. So I wonder why this setting is called `power_on_after_fail' instead of `power on AC attach' as with the vendor BIOS?
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ron minnich