22.04, battery reading is occasionally very off after a sleep

Leonid Yurchenko

4/1/24, 6:29 AM

Laptop is MacBook Pro 13 early 2015. When just booted, its fine, battery percentage shows accuratelly. But after a sleep it occasionally (like 80% of time) goes wrong, showing 4-10% left, while in reality its 40-100%.

$ upower -i /org/freedesktop/UPower/devices/battery_BAT0
  native-path:          BAT0
  vendor:               DP
  model:                bq20z451
  power supply:         yes
  updated:              сб, 01-кві-2023 09:22:28 +0300 (9 seconds ago)
  has history:          yes
  has statistics:       yes
  battery
    present:             yes
    rechargeable:        yes
    state:               discharging
    warning-level:       critical
    energy:              32,7526 Wh
    energy-empty:        0 Wh
    energy-full:         739,81 Wh
    energy-full-design:  74,9038 Wh
    energy-rate:         11,1002 W
    voltage:             11,42 V
    charge-cycles:       1775
    time to empty:       3,0 hours
    percentage:          4,42716%
    temperature:         24,3 degrees C
    capacity:            66,4431%
    technology:          lithium-ion
    icon-name:          'battery-caution-symbolic'
  History (charge):
    1680330147  4,427   discharging
    1680330144  4,429   discharging
    1680330140  4,430   discharging
    1680330109  4,438   discharging
    1680330106  4,440   discharging
    1680330102  4,441   discharging
    1680330071  4,463   discharging
    1680330068  4,464   discharging
    1680330064  4,466   discharging
  History (rate):
    1680330147  11,100  unknown
    1680330145  13,122  discharging
    1680330144  14,012  discharging
    1680330142  10,084  discharging
    1680330140  8,782   discharging
    1680330086  11,498  discharging

The line:

    energy-full:         739,81 Wh

Looks very wrong to me.

0 + 0

battery

macbook

22.04

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: 22.04, battery reading is occasionally very off after a sleep

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