Intel submits 50 ACPI patches for kernel 3.3

[Christopher Svanefalk]

This might not be news to all of you, but I thought it was worth sharing. I
really appreciate the work Intel has been doing and keep doing for power
management in the Linux kernel, and hopefully things will only keep getting
better. The > 1 hour difference in battery life between Windows and Linux
reported by one subscriber to this list, although it perhaps isn't
representative, is still completely unacceptable.

The article is here:
http://www.phoronix.com/scan.php?page=news_item&px=MTA0NDE

Best,

Christopher

[Kok, Auke-jan H]

On Fri, Feb 17, 2012 at 3:06 AM, Christopher Svanefalk

Post by Christopher Svanefalk
This might not be news to all of you, but I thought it was worth sharing. I
really appreciate the work Intel has been doing and keep doing for power
management in the Linux kernel, and hopefully things will only keep getting
better. The > 1 hour difference in battery life between Windows and Linux
reported by one subscriber to this list, although it perhaps isn't
representative, is still completely unacceptable.

Right, but there is a catch - no matter how good we are at putting
power savings code upstream, it doesn't mean that manufacturers will
not completely undo all the good work when they ship their devices
with Windows only (and put bios/firmware on it that we have no control
over at Intel).

I'm the sad owner of an Acer Aspire S3 that runs for maybe 2.5 hours
on battery, even though they claim 6 under windows.

Did it mean Intel or Intel's Linux engineers failed? Hell no. (I wish
we had failed, because that would mean that we would be in a position
to fix it).

Once OEM's ship product with Linux we'll be in a position to really
fix the issue....

Auke

[Christopher Svanefalk]

On Fri, Feb 17, 2012 at 8:41 PM, Kok, Auke-jan H

Post by Kok, Auke-jan H
On Fri, Feb 17, 2012 at 3:06 AM, Christopher Svanefalk

Post by Christopher Svanefalk
This might not be news to all of you, but I thought it was worth

sharing. I

Post by Christopher Svanefalk
really appreciate the work Intel has been doing and keep doing for power
management in the Linux kernel, and hopefully things will only keep

getting

Post by Christopher Svanefalk
better. The > 1 hour difference in battery life between Windows and Linux
reported by one subscriber to this list, although it perhaps isn't
representative, is still completely unacceptable.

Right, but there is a catch - no matter how good we are at putting
power savings code upstream, it doesn't mean that manufacturers will
not completely undo all the good work when they ship their devices
with Windows only (and put bios/firmware on it that we have no control
over at Intel).
I'm the sad owner of an Acer Aspire S3 that runs for maybe 2.5 hours
on battery, even though they claim 6 under windows.
Did it mean Intel or Intel's Linux engineers failed? Hell no. (I wish
we had failed, because that would mean that we would be in a position
to fix it).
Once OEM's ship product with Linux we'll be in a position to really
fix the issue....
Auke

I echo that experience with my HP Probook 4510s. Great laptop which
otherwise plays great with my Fedora install, but still has marked
difference in terms battery life when running XP (havent measured just how
much, but it cant be missed).

I was looking into flashing with an open BIOS a while back, but the entire
process seems too risky, and I do not really know if there would be actual
gains, so I refrained for now. It would be great if there was a way to
interact with the hardware that was less dependent on company builds for
their machines.

[Christopher Svanefalk]

On Fri, Feb 17, 2012 at 10:42 PM, Christopher Svanefalk <

Post by Christopher Svanefalk

Post by Kok, Auke-jan H
On Fri, Feb 17, 2012 at 3:06 AM, Christopher Svanefalk

Post by Christopher Svanefalk
This might not be news to all of you, but I thought it was worth

sharing. I

Post by Christopher Svanefalk
really appreciate the work Intel has been doing and keep doing for power
management in the Linux kernel, and hopefully things will only keep

getting

Post by Christopher Svanefalk
better. The > 1 hour difference in battery life between Windows and

Linux

Post by Christopher Svanefalk
reported by one subscriber to this list, although it perhaps isn't
representative, is still completely unacceptable.

Right, but there is a catch - no matter how good we are at putting
power savings code upstream, it doesn't mean that manufacturers will
not completely undo all the good work when they ship their devices
with Windows only (and put bios/firmware on it that we have no control
over at Intel).
I'm the sad owner of an Acer Aspire S3 that runs for maybe 2.5 hours
on battery, even though they claim 6 under windows.
Did it mean Intel or Intel's Linux engineers failed? Hell no. (I wish
we had failed, because that would mean that we would be in a position
to fix it).
Once OEM's ship product with Linux we'll be in a position to really
fix the issue....
Auke

I echo that experience with my HP Probook 4510s. Great laptop which
otherwise plays great with my Fedora install, but still has marked
difference in terms battery life when running XP (havent measured just how
much, but it cant be missed).
I was looking into flashing with an open BIOS a while back, but the entire
process seems too risky, and I do not really know if there would be actual
gains, so I refrained for now. It would be great if there was a way to
interact with the hardware that was less dependent on company builds for
their machines.

On that note, has anyone had any hands-on experience with Coreboot (or
equivalent)? How much does it affect power consumption, if at all?