Ubuntu
gnome-power-manager package

Power Manager reports incorrect times

Bug #92037 reported by Daniel A. Freer on 2007-03-13

This bug report is a duplicate of: Bug #120258: Laptop Battery Time Remaining Outrageously Inaccurate. Edit Remove

Affects		Status	Importance	Assigned to	Milestone
	gnome-power-manager (Ubuntu)	Invalid	Undecided	Unassigned

Bug Description

Binary package hint: gnome-power-manager

On my HP dv6000t laptop the Gnome Power Manager frequently reports incorrect battery life remaining (in time). The percentage of battery life remaining is correct. This has occured on the same laptop in Edgy 32, Edgy 64, and Feisty 64.
Time remaining can fluctate anywhere from 5 minutes left on a fully charged battery to 10 hours remaining (my battery can only last roughly 3 hours).

ProblemType: Bug
Architecture: amd64
Date: Tue Mar 13 16:58:05 2007
DistroRelease: Ubuntu 7.04
Uname: Linux danlaptop 2.6.20-9-generic #2 SMP Sun Feb 25 22:59:06 UTC 2007 x86_64 GNU/Linux

Revision history for this message

Daniel A. Freer (dfreer) wrote on 2007-03-16:

Screenshot of Power History Edit (104.0 KiB, image/png)

Screenshot of my Power History (reported by gnome-power-manager). Note how it spikes...

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Thomas M. Hinkle (thomas-hinkle) wrote on 2007-04-07:

Tom's Charge History Graph Edit (44.9 KiB, image/png)

I have the same issue.

Battery info as reported by the power manager applet is:

Vendor: Hewlett-Packard
Technology: Lithium Ion
Serial Number: 2168913098
Model: JM-12

My graph of charge history shows a steady, predictable decline (though it looks like a discrete function -- declining in steps rather than continuously). My graph of remaining time is all over the place. I would expect that you could extrapolate from the charge history graph to create a nice smooth remaining-time graph.

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Thomas M. Hinkle (thomas-hinkle) wrote on 2007-04-07:

Screenshot-Power History - Estimated Time History.png Edit (61.6 KiB, image/png)

And here is my estimated time history graph (generated at the same time as the charge history graph). Notice that it is not the inverse of the charge history.

I assume this data would be more useful as a table of some kind -- is there a way for me to get a dump of that data to attach here?

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Bryce Harrington (bryce) wrote on 2007-06-14:

I believe this may be a duplicate of bug 120258. Can someone confirm by checking if this fixes it?
In gconf-editor, set apps->gnome-power-manager->use_profile_time to FALSE (unchecked).

Changed in gnome-power-manager:
status:	Unconfirmed → Needs Info

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Matthew Nuzum (newz) wrote on 2007-07-26:

power manager inconsistency screenshot Edit (39.2 KiB, image/png)

I'm having the same problem in a clean install of Gutsy Tribe 3. unchecking apps->gnome-power-manager->general->use_profile_time does fix the problem for me.

I'm attaching a screenshot that demonstrates the problem pretty clearly. I ran the acpi program and also pointed at the power manager icon so you could see the different responses.

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Launchpad Janitor (janitor) wrote on 2007-09-21:

[Expired for gnome-power-manager (Ubuntu) because there has been no activity for 60 days.]