[ltp] Re: T430s restarts after shutdown

[Peter Gantner]

Hello,

A couple of things to try:

1. Sometimes BIOSes have a setting what to do after "power loss". 
Typical options are power on, power off, restore whatever was the 
previous power level...

I don't think I have seen it on Thinkpads or laptops in general but it 
can't hurt to check.

2. There is a way to tell Linux which ACPI level to use for "power off". 
This is typically used for hardware which doesn't do WOL or NVRAM or 
even keyboard wakeup in a "deep power-off" level, but does in a higher 
one.
It's normally used for hibernate, but it may be related. See under 
"reboot=" and "acpi_sleep=" in 
<linux-source>/Documentation/kernel-parameters.txt .

3. Are using acpi_osi= or friends as a kernel parameter? Possibly the 
BIOS does something strange depending on OSI identification?

HTH, good luck

   Peter

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