11.04 on MBP 7,1:*short battery time

[albiurs]

Hi,

I Installed Ubuntu 11.04 on my MacBook Pro 7,1 and configured it according to:
https://help.ubuntu.com/community/MacBookPro7-1/Natty

Now I have the following difficulty in configuration:

• With optimal settings (brigtness, W-LAN, bluetooth,...) the battery time shows about 10 hours in OS X if the battery is completely charged, but only about 4 hours when running Ubuntu. My be dependent on the heat control issue (http://ubuntuforums.org/showthread.php?t=1769455) which I posted before? Or is there any other reason? How can I optimise the battery time?

Any suggestions?

Thanks!

[yello_downunder]

Have you tried a program called powertop? It can help you find power wasters.

I think that Linux is not there yet in terms of battery usage. I have little luck getting my macbook over 4 hours of heavy use. In OS X, I can get 5-6 hours of constant use (MBP 8,1).

[nevius]

This is entirely conjecture, but the macbook pro is probably using the discreet graphics card 100% of the time under Ubuntu causing a shorter battery life.

There may be some useful information here: http://ubuntuforums.org/showthread.php?t=1215928

Hi,

I Installed Ubuntu 11.04 on my MacBook Pro 7,1 and configured it according to:
https://help.ubuntu.com/community/MacBookPro7-1/Natty

Now I have the following difficulty in configuration:

• With optimal settings (brigtness, W-LAN, bluetooth,...) the battery time shows about 10 hours in OS X if the battery is completely charged, but only about 4 hours when running Ubuntu. My be dependent on the heat control issue (http://ubuntuforums.org/showthread.php?t=1769455) which I posted before? Or is there any other reason? How can I optimise the battery time?

Any suggestions?

Thanks!

[2F4U]

Are you aware of the power bug in kernel 2.6.38 and therefore in Ubuntu 11.04?

http://www.phoronix.com/scan.php?pag...item&px=OTM3NQ

[Neds Moar Salt]

Use ubuntu classic and add the cpu scaling module to your panel and put it on powersave.