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i6000 Gets Hotter in Ubuntu Than When I Ran Windows

post #1 of 5
Thread Starter 
Hey all, i've been sorta concerned about my laptop.

I installed Ubuntu a month or so ago and I've noticed, that even while it idles, it runs pretty hot to the touch. It never really got hot in Windows unless i was doing something that was pretty intense on the system.

The fans seem to run at the same speed as it did with windows, but it gets hot as if the cpu and memory were at 100%... which it clearly isn't according to the system monitor.

Also, in windows i could get 4 hours easy on my battery. With Ubuntu, i only get like 2 1/2. Is this because the processor and the videocard don't underclock themselves when i unplug the system? Is there a way to enable that feature in linux?

Any thoughts or comments would be greatly appreciated, thanks!
post #2 of 5
cpu throttling for the P-M as well as Dell Laptop extras are already compiled and included with teh kernel...best you can do is make sure the proper modules are loaded. Also make sure that you're in "ondemand" settings rather than "Performance" so that it only throttles up as needed (vs Performance that keeps it @ full speed regardless of what happens). When you unplug it should auto-switch to lowest speed (forget what the profile is called). video card is another story, fglrx is a rather craptacular driver so i wouldn't expect it to throttle. its natural to expect slightly lesser battery life in linux than in windows, but over an hour discrepancy you're reporting is way too much and something ain't working right. to control fans and other fancy dell bios stuff you need to install i8kutils
Code:
sudo aptitude install i8kutils
post #3 of 5
Thread Starter 
how do you find the throttling settings for the processor?

and i installed i8kutils, but i dont know where to go to run it. how do i run the program?

thanks.
post #4 of 5
Quote:
Originally Posted by abf
its natural to expect slightly lesser battery life in linux than in windows, but over an hour discrepancy you're reporting is way too much and something ain't working right.

Veto.

I had a similar problem with my i6000 which could run 4-4.5 hours using windows (and undervolting) but only 3.5-4 hours running kernel 2.6.15 or 2.6.16, but with 2.6.17 and linux-phc (undervolting for linux) I get about 4.25- 4.75 hours with linux.

But I don't have the crappy ati card as I went for the chipset graphics for longer runtimes.
post #5 of 5
there is about a 5-10 minute difference for me in win vs lin... and i am sure it pretty much has to do with graphics (ati) more than anything else.
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