Write "Now you can turn off your computer" if hardware does not support apm or acpi

[Alfredo Pironti]

Binary package hint: usplash

If hardware does not support apm or acpi, then the usplash should tell the user when it is safe to turn off the computer.
Instead of issuing the "power off" command to the apm/acpi module, it could write something like
"Now you can turn off your computer" (like it writes "Remove CD form tray (if any)...")

It is true that when the orange bar is over, then it is assumed that you can turn off your computer,
but explicitly reading it would make it more confident.

This whislist also applies to xubuntu e kubuntu splash screeens.

[Charlie Kravetz (cjkgeek)]

Thanks for helping improve Ubuntu. I am confirming this with a suggestion that perhaps something like wording used in the LiveCD could be used. I have at least one older system that does not shut itself off, but instead must be turned off after the OS shuts down. It would be nice to see a message saying it is now safe to power the computer off.

This should perhaps be wishlist.

[Scott James Remnant (Canonical) (canonical-scott)]

The obvious problem with is that we don't actually know that the machine is not going to halt until the machine fails to halt - by which time, we've already effectively exited the kernel.

We could prepare in advance, by changing the video mode to text, writing a message on screen, then attempting to power off - but that would massively disadvantage the majority of people whose machines _do_ support ACPI.