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Re: power management problems
Date: Thu Sep 13 2007 - 05:17:12 EDT
Florian Reitmeir wrote:
> Ritesh Raj Sarraf wrote:
> > Linux => 5-10 minutes
> > Windows => 1.5 hrs
Wow. I can't imagine how much current must be drawn in order to drain a battery that fast.
> maybe it would be a goog look, to see how much power does your laptop need.
> on my thinkpad i can look at:
> /proc/acpi/battery/...
cat /proc/acpi/battery/*/state
cat /proc/acpi/battery/*/info
> and it tells me, how many milliwatts are drawn from the laptop.
> And Capacity/Milliwatts = Time Your Laptop Will Work
>
> And you are sure, the lifetime is 10minutes? not the display from your
> battery?
This is a very good question. It is not uncommon for the acpi to report buggy values. This might simply be a reporting problem. How long does your laptop actually run before the battery drops off?
On the other hand if your laptop actually does stop running after 5-10 minutes then I have to wonder if it is not a different problem entirely? Such as are the cooling fans running? If it simply dies quickly then perhaps the battery is fine but that it is overheating? In that case 5-10 minutes may be about right for it to generate a lot of heat and fail due to over-temperature. I have heard various reports from people of machines that overheat when running Linux due either higher cpu utilization or broken acpi fan controls.
Just brainstorming something to think about...
Bob
-- To UNSUBSCRIBE, email to debian-laptop-REQUEST@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.orgReceived on Thu Sep 13 05:17:40 2007
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