Description of problem: Using gnome-power-manager the estimated time remaining on battery varies from minutes to many hours even though the discharge rate as shown by the charge history seems fairly constant. Version-Release number of selected component (if applicable): 2.16.0 How reproducible: Every time Steps to Reproduce: 1.Run computer on battery power. 2. 3. Actual results: Graph and tool tip on gnome power manager showing time remaining varies so much as to be meaningless. Expected results: Should produces a fairly accurate estimate of battery time remaining. Additional info:
Created attachment 145168 [details] Graph of charge history showing gradual decrease in power
Created attachment 145169 [details] Estimated time graph for the same period varies wildly
gnome-power-manager uses hal. If you execute the following command in a terminal, you should get the remaining time in seconds as estimated by hal: lshal | grep battery.remaining_time If this is wrong too, the bug is in hal.
Also, what does the "rate" graph look like? I've fixed this in 2.19.x, but this is very new code.
Created attachment 152580 [details] gnome-power-manager "rate graph"
Executing: lshal | grep battery.remaining_time does seem to show random values that are reflected in gnome-power-manager resulting in low power warnings just after I've unplugged from AC and have 99% battery left. I'll look into assigning the bug to HAL in this case. Re the "rate" graph, it's always shown 0W no matter if I'm on AC power or battery, it never changes. Here's the graph anyway even though it's a bit boring ;-)
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Using Fedora 8 now and the time remaining seems stable and correct. Closing the bug.