Personal computing discussed

Moderators: SecretSquirrel, notfred

 
eckslax
Gerbil Elder
Topic Author
Posts: 5320
Joined: Sat Oct 05, 2002 4:22 pm
Location: Vast Right Wing Conspiracy HQ

Switching from XP to Ubuntu on laptop...battery life?

Sun Mar 01, 2009 9:04 pm

I think the topic says it all. I'll be using the latest version of Ubuntu and was wondering if anyone who has done a similar switch recently can comment on their battery life before and after the switch. I'm going to hold off for a couple weeks because I want to wait until after my current classes are done. Thanks and sorry if this topic has been covered somewhere else recently.
"God created man. Samuel Colt made them equal."

"Government does not tax to get the money it needs; government finds a need for the money it gets." - Ronald Reagan
 
hrsetrdr
Gerbil In Training
Posts: 9
Joined: Sat Jan 26, 2008 4:59 pm

Re: Switching from XP to Ubuntu on laptop...battery life?

Sat Mar 14, 2009 11:36 pm

There shouldn't be a whole lot of difference, if the same power saving features are enabled.
 
Skrying
Gerbil Jedi
Posts: 1792
Joined: Wed Jul 09, 2008 1:37 am
Location: Missouri

Re: Switching from XP to Ubuntu on laptop...battery life?

Sat Mar 14, 2009 11:54 pm

Anywhere from the same to far worse. My battery life on my Dell XPS M1330 is about cut in half in all pre 9.04 alpha builds compared to Vista, though those introduce other issues... So, best of luck.
 
Forge
Lord High Gerbil
Posts: 8140
Joined: Wed Dec 26, 2001 7:00 pm
Location: SouthEast PA

Re: Switching from XP to Ubuntu on laptop...battery life?

Sun Mar 15, 2009 12:49 am

Mine's quite a lot better on my Inspiron e1505, about the same on my IBM X41, and slightly worse on my Gateway M285-E. My HP 6730b runs much longer, but I think that's because Ubuntu gives much finer control of times to sleep/dim/suspend/etc than XP does. I've also noticed that Vista is better than XP at power management, but loads the machine more and thus chews more battery while running. All my observations, not necessarily scientific, so YMMV.
Behemoth - media server
Galactica - test lab server
Falling Outside the Normal Moral Constraints - MBP 15
Donnager - M4800 DTR
Rocinante - E5530 testing machine
Razorback - E6430 ultraportable
 
henry44
Gerbil Elite
Posts: 724
Joined: Fri May 31, 2002 9:07 pm
Location: Like you care.......

Re: Switching from XP to Ubuntu on laptop...battery life?

Sun Mar 15, 2009 12:57 am

My averatec 1150-EH1 gets the same 2.5-3 hours but runs cooler and faster. My Lenovo x200 gets 9 hours with xp pro, 6 with Vista 64-bit and 5 hours with ubuntu 32 or 64-bit.
 
thecoldanddarkone
Minister of Gerbil Affairs
Posts: 2316
Joined: Wed Mar 26, 2003 4:35 pm

Re: Switching from XP to Ubuntu on laptop...battery life?

Sun Mar 15, 2009 1:14 am

henry44 wrote:
My averatec 1150-EH1 gets the same 2.5-3 hours but runs cooler and faster. My Lenovo x200 gets 9 hours with xp pro, 6 with Vista 64-bit and 5 hours with ubuntu 32 or 64-bit.

Ehh, something is wrong with that. 3 hour difference?
I7 4930k, 32 GB Ballistix DDRL3@2133 , 1.2 TB Intel 750 AIC, 500 GB mx200, XFX r9-290, asus x79 ws, HP ZR24w, edifier s730
HP Pro x2 612- i5-4302Y, 8 gigs of memory, 256 ssd
 
just brew it!
Gold subscriber
Administrator
Posts: 45480
Joined: Tue Aug 20, 2002 10:51 pm
Location: Somewhere, having a beer

Re: Switching from XP to Ubuntu on laptop...battery life?

Sun Mar 15, 2009 11:45 am

thecoldanddarkone wrote:
henry44 wrote:
My averatec 1150-EH1 gets the same 2.5-3 hours but runs cooler and faster. My Lenovo x200 gets 9 hours with xp pro, 6 with Vista 64-bit and 5 hours with ubuntu 32 or 64-bit.

Ehh, something is wrong with that. 3 hour difference?

I also question how the averatec can be running cooler under Linux if the battery life is still the same. If it is using the same amount of power, it is dissipating the same amount of heat. Period.

I suppose the balance of power usage may shift (e.g. more power being dissipated in the screen versus the CPU) due to differences in power management strategies, giving the impression that it is running cooler. But that's probably a bit of a stretch.

Or perhaps Linux is simply getting the estimated battery life wrong, and telling you the battery is discharged when you've actually still got some life left.
The years just pass like trains. I wave, but they don't slow down.
-- Steven Wilson
 
notfred
Maximum Gerbil
Posts: 4225
Joined: Tue Aug 10, 2004 10:10 am
Location: Ottawa, Canada

Re: Switching from XP to Ubuntu on laptop...battery life?

Sun Mar 15, 2009 2:40 pm

just brew it! wrote:
I also question how the averatec can be running cooler under Linux if the battery life is still the same. If it is using the same amount of power, it is dissipating the same amount of heat. Period.
It could be something as simple as driving different cooling fan profiles. Yes, it will be dissipating the same amount of heat, but being actively cooled that doesn't necessarily mean that it will be doing it at the same temperature.

The difference in power draw due to the fan usage could be offset by more efficient use of some components or it may be Linux is not using some components e.g. internal modems can be a pain to find drivers for on Linux, or it could simply be lost in the noise.
 
just brew it!
Gold subscriber
Administrator
Posts: 45480
Joined: Tue Aug 20, 2002 10:51 pm
Location: Somewhere, having a beer

Re: Switching from XP to Ubuntu on laptop...battery life?

Sun Mar 15, 2009 2:44 pm

notfred wrote:
It could be something as simple as driving different cooling fan profiles. Yes, it will be dissipating the same amount of heat, but being actively cooled that doesn't necessarily mean that it will be doing it at the same temperature.

Ahh... I hadn't thought of that. Good point.
The years just pass like trains. I wave, but they don't slow down.
-- Steven Wilson

Who is online

Users browsing this forum: No registered users and 1 guest