[ltp] radeonfb sleep patch for kernel 2.6.15

[Laurent Gilson]

Hello,

> 1) I've read that APM might offer significant savings in power lost  
> during than ACPI S3.  Is this something that might have been truein the  
> past, but not so much these days?

ACPI and APM will reach the same levels, but in a different way: APM  
auto-handles stuff like putting the radeon to sleep and removing power  
 from the CPU. With ACPI the drivers have to do that themselfs. If the  
drivers do it right: everythings OK with ACPI. If you don't have good  
drivers: use APM and pray the BIOS-writters got it right.

> 2) Since it seems I'm sometimes in a position to "over-sleep" my  
> laptop.  it
> would be nice to convert my sleep into a Suspend2 hibernation.  I was  
> talking
> to someone in #suspend2 who mentioned that his Acer laptop automatically
> wakes up from an ACPI S3 when the battery reaches a certain limit.  He  
> says
> he couldn't find anywhere in the BIOS that might control this behavior;  
> maybe
> it's some weird Acer-specific behavior.

No, it's not. The Thinkpads can do that too (under windows), but i have no  
idea how.

ACPI let's you specify all kinds of wired things, i would not be suprised  
if that's a normal ACPI-function.

cu