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Bug 673220 - 'Critical capacity' warning on laptop with multiple batteries broken
'Critical capacity' warning on laptop with multiple batteries broken
Status: RESOLVED FIXED
Product: gnome-settings-daemon
Classification: Core
Component: power
3.2.x
Other Linux
: Normal normal
: ---
Assigned To: GNOME Power Manager Maintainer(s)
GNOME Power Manager Maintainer(s)
Depends on:
Blocks:
 
 
Reported: 2012-03-31 03:50 UTC by Amit Shah
Modified: 2014-05-30 08:36 UTC
See Also:
GNOME target: ---
GNOME version: ---


Description Amit Shah 2012-03-31 03:50:26 UTC 
I have two batteries on my ThinkPad T420s, one a 6-cell and the other a 3-cell.  The power manager applet calculates the combined capacity, which is what is desired.  However, when the 3-cell one is completely drained out and the 6-cell one is at 30 or 40% capacity, the combined capacity is dropped to below 15%, and the 'system battery critically low' thing triggers.

This is undesirable: I still have a good hour's worth of battery left, but the laptop is forced into hibernation/shutdown.

Please find a way to correct this.
Comment 1 Amit Shah 2012-03-31 03:57:26 UTC 
BTW, across system suspend-to-ram, sometimes, after the 3-cell battery has completely discharged, the battery remaining calculation only considers the 6-cell battery's capacity (i.e. it shows 20% if that battery is at 20% capacity, and the other one at 0%).  This doesn't happen all the time.  If this isn't a related issue, I can open another bug.  Let me know if I should do so.
Comment 2 Amit Shah 2013-11-18 18:46:24 UTC 
This is resolved with 3.10.