[ltp] PowerButton 1s+ for event

[Henrique de Moraes Holschuh]

On Sat, 12 Feb 2011, Karsten König wrote:
> to get the acpi powerbutton event one needs to press the button for more then 
> a second, is this a thinkpad-acpi limit or a limit by the embedded controller?

It is standard to have to hold that button for a while, usually 3s, before
it will signal anything to the operating system.

Some BIOSes let you choose between delayed or instant-off, and what kind of
signal (shutdown or "sleep") the button should issue.

> If it is the former could this maybe be adjusted? I thought it was an acpi 
> problem that I got no shutdown when pressing it.

Look in the BIOS.  I don't recall if the thinkpad lets you change it.

And this is standard, generic ACPI functionality, controled by the acpi
"button" driver.

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh