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Old 02-15-2016, 10:45 PM   #1
svm49
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openSUSE Tumbleweed with XFCE: Laptop battery dies without warning at ~40%


As mentioned in the subject, my laptop battery dies around the 40% mark, and generally the power management icon on the panel says >1 hr of battery life is remaining. When I then plug it in and start it, it starts charging from 0%.
Overall, I hardly get an hour from 100% till this. Now, I am new to Linux, so not really sure how to tackle this. Any and all help shall be appreciated.

Cheers!
 
Old 02-15-2016, 11:35 PM   #2
rokytnji
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Compare your battery readout in terminal against your battery monitor that says 40% or whatever with

Code:
harry@biker:~$ acpi -b
Battery 0: Discharging, 98%, 02:10:30 remaining
I do not use a battery monitor in my Icewm Window Manager taskbar. I monitor my battery in conky.

Code:
${color}battery: ${color}$acpiacadapter, ${battery_percent BAT0}%
Conky is my white system monitor on the r/h of the screen. Opensuse should have it. I don't run rpm distros so I cannot help much further than this.

http://postmyimage.com/img2/339_screenshot.jpg
 
Old 02-16-2016, 12:13 AM   #3
svm49
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Hi, I tried something similar using a different command and this is what I got:

Code:
svm@linux-s7ly:~> upower -i /org/freedesktop/UPower/devices/battery_BAT1
  native-path:          BAT1
  vendor:               SANYO
  model:                PABAS024
  serial:               3658Q
  power supply:         yes
  updated:              Tue 16 Feb 2016 14:06:16 HKT (44 seconds ago)
  has history:          yes
  has statistics:       yes
  battery
    present:             yes
    rechargeable:        yes
    state:               discharging
    warning-level:       none
    energy:              43.956 Wh
    energy-empty:        0 Wh
    energy-full:         48.84 Wh
    energy-full-design:  48.84 Wh
    energy-rate:         14.208 W
    voltage:             11.715 V
    time to empty:       3.1 hours
    percentage:          90%
    capacity:            100%
    technology:          lithium-ion
    icon-name:          'battery-full-symbolic'
  History (charge):
    1455602776	90.000	discharging
  History (rate):
    1455602776	14.208	discharging
Now, the % and time to empty shown in this output matches that shown by the icon in the panel. But again, it never lasts that long since it dies at ~40%.
 
Old 02-16-2016, 01:44 PM   #4
ondoho
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have you looked into "Linux Battery Calibration"?
 
Old 02-16-2016, 05:39 PM   #5
svm49
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@ondoho, I hadn't looked it up that much, thanks for the suggestion!
Found this re-calibration procedure, going to try it out and see if it works:

Quote:
Assuming it has some charge you can unplug it. Let it run till it die. (you should be able to disable certain functions of power management while its unplugged. At lest I can in KDE, I dont use any of the other enviroments)

Try to turn it on again (without pluging it in)
Put it in BIOS let it sit till it dies. Repeat this as much as you can till it wont turn on at all. Wait 30 minutes to an hour. Do it again (All without pluging it in)
Make sure its dead as a door nail.
Plug it in but dont power it on, give it atlest 6-8 hours to charge. Hell plug it back on leaveing it off before bedtime.Let it charge while you sleep.
Check it out in the morning.

All the charge data is stored on the battery not the OS. if it where you run into allot issues if you ever had to reinstall an OS or when switching to another OS.
So I find using software to cycle a battery not really needed.all it dose is tell the computer to put a load on the battery and drain it.

Infact I am due to do the same for my laptop. It likes to bounce between 97-99% and say that its charged. So i need to Cycle my battery.
If this dont work I say the battery is defectived. If windows somehow fixes it I would be like ok "confused?" :lol: if my method fails which is what the software dose.
all software programs do is force drains the battery, and then recharges like normal. (that im aware of anyways)
In the meantime, if anyone has any other suggestions, please do post it.
 
  


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