Mailinglist Archive: opensuse (4343 mails)

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Re: [SLE] Shorter battery life on laptop with SuSE 8.1 ?
  • From: Radule Soskic <rms@xxxxxxxxxx>
  • Date: Sat, 02 Nov 2002 10:16:20 +0100
  • Message-id: <3DC397E4.9080804@xxxxxxxxxx>
John Andersen wrote:
On Friday 01 November 2002 04:40 am, Radule Soskic wrote:

Now, I can not believe myself, but it seems that my laptop's battery
life decreased significantly after this upgrade. Here, by
"significantly", I mean: it's not above 3 hours any more, but just about
2 hours, or even less. Thus, it is more than 30% decrease.

I think I remember someone on this list mentioned power consumption of
ReiserFS. May that be the cause of the problem, since I used ext before?
If that is true, what could be the file system of choice for laptops,
regarding battery consumption.

I sincerly doubt reiser has much to do with your battery run time.
The only thing it affects is periodic syncing the disk and all
the other FSs do that too.
You can set your mail check time longer and achieve savings in disk useage if you feel its useds too much.

But you might need to find out if that machine supports acpi and
if so get it setup properly so as to allow throttling.
If only apm make sure apmd is loaded and configured.

I missed apmd.

Sorry for this posting. I really remember there was some discussion about " HDD doesn't sleep with reiserfs..." or something like that in the past. This encouraged me to post before thorough investigation.

As I said, I did some experimenting with boot. Acpi=on did not work, but apm=on worked, so I mistakingly presumed this was enough for apm to get started. Also, the battery indicator in system tray became alive after this, making me believe that my apm actually works.

Now, I checked it and found that apmd was not running at all.

Mr.Anderson, thank you for the hints. I hope my battery will do OK now. :-)

Best regards,

Radule Soskic

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