Ubuntu

Gnome Power Manager does not update battery data

Asked by HillerD

Running Hardy Heron with up to date packages (06-July-08).
gnome-power-manager does not update residual battery life time (stays fixed at 3:30h) and power consumption.
The bug was described and resolved in https://bugs.launchpad.net/ubuntu/+source/hal/+bug/194719 in April, but on my system the issue is still there.
I imagine bug was reintroduced in last HAL update .

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Bajtalan Hunor (cerebellum) said : 		#1

Hello HillerD

You mentioned that the bug was solved, I also checked and it seems it is solved, and if your system is up to date than it means you have got the fix.
But I suppose the problem is connected to your hardware. How old is your laptop? Did you experience anything similar to this under your previous Ubuntu or any other OS? I have just one idea, if your computer is a bit older, maybe battery life is decreasing and Gnome Power Manager does not recognize the status of your battery.
Anyway contact GNOME developers and post your bug here http://www.gnome.org/projects/gnome-power-manager/bugs.html

I am sorry I could not give some useful information

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HillerD (hillerd-deactivatedaccount) said : 		#2

Hallo Bajtalan Hunor,

thanks for the response, I will discuss on http://www.gnome.org/projects/gnome-power-manager/bugs.html.

FYI:
The laptop is an Acer Travelmate 4000, bought 2004.
Main operating system is still (until I get Hardy running): Feisty Fawn. There is also WXP SP2. Both read battery status correctly. I learned, that with Hardy the battery is not read via acpi any more (command acpi -b gives correct values) but with sysfs. Maybe this is where the problem lies.
Battery live is drastically decreased (new: 5:30h, now 1:30h) I will check with a new battery as well. But the gnome-power-manager indicates a power consumption of 0 to 1.8W (any value it showed last time when the battery was charged). So it's not just the interpretation of the battery status but also the reading of the instant values, that does not work.

Is there anything I can do to verify, that my system has all those patches that resolved the problem (just to make sure)?
Where can I verify what sysfs is doing?

Dietmar (=hillerd)

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Bajtalan Hunor (cerebellum) said : 		#3

Hy Dietmar!

So it seems that the problem is Hardy! Try to discuss the problem with the Gnome Developer Community, if not post it again here! I am sorry but that was all my idea, if you updated your system regularly, you should have all the latest packages.

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HillerD (hillerd-deactivatedaccount) said : 		#4

filed a bug for HAL:
https://answers.launchpad.net/ubuntu/+question/38362