Bug 837345

$ upower --dump 

and 

$ solid-hardware details /org/freedesktop/UPower/devices/battery_BAT0

Same here (Fedora 17 + kde-workspace-4.8.95-1.fc17.x86_64). Oddly enough, if I run the plasmoid in its own window ("plasma-windowed battery"), it shows the correct charge value of the battery.

More info:

[christian@laptop ~]$ upower --dump 
Device: /org/freedesktop/UPower/devices/line_power_ADP1
  native-path:          /sys/devices/LNXSYSTM:00/device:00/ACPI0003:00/power_supply/ADP1
  power supply:         yes
  updated:              Tue Jul  3 10:40:49 2012 (1174 seconds ago)
  has history:          no
  has statistics:       no
  line-power
    online:             yes

Device: /org/freedesktop/UPower/devices/battery_BAT1
  native-path:          /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:0f/PNP0C09:00/PNP0C0A:00/power_supply/BAT1
  vendor:               SAMSUNG Electronics
  power supply:         yes
  updated:              Tue Jul  3 10:40:54 2012 (1169 seconds ago)
  has history:          yes
  has statistics:       yes
  battery
    present:             yes
    rechargeable:        yes
    state:               fully-charged
    energy:              27.75 Wh
    energy-empty:        0 Wh
    energy-full:         27.75 Wh
    energy-full-design:  44.4 Wh
    energy-rate:         15.1071 W
    voltage:             12.301 V
    percentage:          100%
    capacity:            62.5%
    technology:          lithium-ion

Daemon:
  daemon-version:  0.9.17
  can-suspend:     yes
  can-hibernate    yes
  on-battery:      no
  on-low-battery:  no
  lid-is-closed:   no
  lid-is-present:  yes
  is-docked:       no


[christian@laptop ~]$ solid-hardware details /org/freedesktop/UPower/devices/battery_BAT0
udi = '/org/freedesktop/UPower/devices/battery_BAT0'
  parent = ''  (string)
  vendor = ''  (string)
  product = ''  (string)
  description = ''  (string)


[christian@laptop ~]$ solid-hardware details /org/freedesktop/UPower/devices/battery_BAT1
udi = '/org/freedesktop/UPower/devices/battery_BAT1'
  parent = '/org/freedesktop/UPower'  (string)
  vendor = 'SAMSUNG Electronics'  (string)
  product = 'Lithium Ion Battery'  (string)
  description = 'Lithium Ion Battery'  (string)
  Battery.plugged = true  (bool)
  Battery.type = 'PrimaryBattery'  (0x3)  (enum)
  Battery.chargePercent = 100  (0x64)  (int)
  Battery.rechargeable = true  (bool)
  Battery.chargeState = 'NoCharge'  (0x0)  (enum)

Christian, can you do the same "dump" when running on battery please?

Sure, here is it:

[christian@laptop ~]$ upower --dump 
Device: /org/freedesktop/UPower/devices/line_power_ADP1
  native-path:          /sys/devices/LNXSYSTM:00/device:00/ACPI0003:00/power_supply/ADP1
  power supply:         yes
  updated:              Tue Jul  3 11:34:10 2012 (137 seconds ago)
  has history:          no
  has statistics:       no
  line-power
    online:             no

Device: /org/freedesktop/UPower/devices/battery_BAT1
  native-path:          /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:0f/PNP0C09:00/PNP0C0A:00/power_supply/BAT1
  vendor:               SAMSUNG Electronics
  power supply:         yes
  updated:              Tue Jul  3 11:36:10 2012 (17 seconds ago)
  has history:          yes
  has statistics:       yes
  battery
    present:             yes
    rechargeable:        yes
    state:               discharging
    energy:              26.64 Wh
    energy-empty:        0 Wh
    energy-full:         27.75 Wh
    energy-full-design:  44.4 Wh
    energy-rate:         19.314 W
    voltage:             11.912 V
    time to empty:       1.4 hours
    percentage:          96%
    capacity:            62.5%
    technology:          lithium-ion
  History (charge):
    1341329770  96.000  discharging
    1341329720  97.000  discharging
  History (rate):
    1341329770  19.314  discharging
    1341329750  22.233  discharging
    1341329720  19.625  discharging
    1341329695  21.900  discharging

Daemon:
  daemon-version:  0.9.17
  can-suspend:     yes
  can-hibernate    yes
  on-battery:      yes
  on-low-battery:  no
  lid-is-closed:   no
  lid-is-present:  yes
  is-docked:       no

so, I think there is a correlation between some plasmoids not updating, but only after a suspend->resume cycle.  I'm seeing some oddness with plasma-nm too recently (the applet displays incorrect signal strength).

Any of you seeing this on a fresh boot without ever having suspended?

$ solid-hardware details /org/freedesktop/UPower/devices/battery_BAT1

too please :)

[christian@laptop ~]$ solid-hardware details /org/freedesktop/UPower/devices/battery_BAT1
udi = '/org/freedesktop/UPower/devices/battery_BAT1'
  parent = '/org/freedesktop/UPower'  (string)
  vendor = 'SAMSUNG Electronics'  (string)
  product = 'Lithium Ion Battery'  (string)
  description = 'Lithium Ion Battery'  (string)
  Battery.plugged = true  (bool)
  Battery.type = 'PrimaryBattery'  (0x3)  (enum)
  Battery.chargePercent = 91  (0x5b)  (int)
  Battery.rechargeable = true  (bool)
  Battery.chargeState = 'Discharging'  (0x2)  (enum)

Rex, you are right. The problem is triggered by a suspend->resume cycle. After a reboot, the battery plasmoid is working as expected.

BTW, I've seen the plasma-nm bug as well. Is there another bug report for this?

For me, battery applet is stuck at 94% , but


$ upower -d
Device: /org/freedesktop/UPower/devices/line_power_AC
  native-path:          /sys/devices/LNXSYSTM:00/device:00/ACPI0003:00/power_supply/AC
  power supply:         yes
  updated:              Mon Jul  2 16:00:50 2012 (69692 seconds ago)
  has history:          no
  has statistics:       no
  line-power
    online:             yes

Device: /org/freedesktop/UPower/devices/battery_BAT0
  native-path:          /sys/devices/LNXSYSTM:00/device:00/PNP0C0A:00/power_supply/BAT0
  vendor:               SMP
  model:                DELL PD6858
  serial:               297
  power supply:         yes
  updated:              Mon Jul  2 16:00:57 2012 (69685 seconds ago)
  has history:          yes
  has statistics:       yes
  battery
    present:             yes
    rechargeable:        yes
    state:               fully-charged
    energy:              86.58 Wh
    energy-empty:        0 Wh
    energy-full:         86.58 Wh
    energy-full-design:  86.58 Wh
    energy-rate:         0.0111 W
    voltage:             12.448 V
    percentage:          100%
    capacity:            97.2051%
    technology:          lithium-ion

Daemon:
  daemon-version:  0.9.17
  can-suspend:     yes
  can-hibernate    yes
  on-battery:      no
  on-low-battery:  no
  lid-is-closed:   no
  lid-is-present:  yes
  is-docked:       no



$ solid-hardware details /org/freedesktop/UPower/devices/battery_BAT0
udi = '/org/freedesktop/UPower/devices/battery_BAT0'
  parent = '/org/freedesktop/UPower'  (string)
  vendor = 'SMP'  (string)
  product = 'DELL PD6858'  (string)
  description = 'Lithium Ion Battery'  (string)
  Battery.plugged = true  (bool)
  Battery.type = 'PrimaryBattery'  (0x3)  (enum)
  Battery.chargePercent = 100  (0x64)  (int)
  Battery.rechargeable = true  (bool)
  Battery.chargeState = 'NoCharge'  (0x0)  (enum)



So, seems upower/solid are correct, the applet just isn't getting the update.

Ah, found https://bugs.kde.org/show_bug.cgi?id=287952  
for this particular issue.

Yup, looks like it :/ The problem with suspend is that the devices "vanish" from the system (get removed internally) and they reappear upon the resume and the Plasma dataengine holds reference to the stale objects, therefore not receiving any updates.

Created attachment 596049 [details]
upower dump

Created attachment 596050 [details]
solid battery details

Just to be sure, is it just the charge percent that isn't getting updated? What about the AC plug state, does the plasmoid correctly react to plugging/unplugging the cable?

For me, the AC plug state gets displayed just fine. It's only the charge value that is wrong.

It looks like this is more related to KDE bug #287952

The bug is in the battery applet (QML) itself, the powermanagement engine itself is correctly updating the battery charge percent and state, even after suspend/resume.

%changelog
* Mon Jul 09 2012 Rex Dieter <rdieter> 4.8.95-3
- Battery Monitor widget stops tracking charging state changes after suspend/resume cycle (#837345, kde#287952)