On my desktop computer with Fedora-25 (also in fedora-23 was similar) the battery indicator on the status bar flashes constantly with a red icon and shows a message "0% Plugged in, not Charging" The only devices that I have with batteries are the APC ups and an Apple Wireless keyboard. When I click the icon it displays two entries "Apple keyboard with battery level 33%" and an additional entry "Battery not present" In Fedora-23 I could eliminate the red warning by restarting the upower.service. Not any more in fedora-25 The upower reports the following: The ups for some reason appears twice as ups_hiddev0 and as DisplayDevice, but both reported fully-charged, however the updated time for the ups_hiddev0 as updated in 1970 (0s unix time), on the Display entry is correct. Most probably there is a problem either with upowerd or apcupsd, but why kde is reporting 0%? $ upower -d Device: /org/freedesktop/UPower/devices/keyboard_hid_e4o8bo7fo20oc1o29_battery native-path: hid-e4:8b:7f:20:c1:29-battery model: Apple Wireless Keyboard power supply: no updated: Wed Jan 11 09:15:18 2017 (6 seconds ago) has history: yes has statistics: yes keyboard present: yes rechargeable: yes state: discharging warning-level: none percentage: 33% icon-name: 'battery-good-symbolic' Device: /org/freedesktop/UPower/devices/ups_hiddev0 native-path: /sys/devices/pci0000:00/0000:00:14.0/usb3/3-7/3-7:1.0/usbmisc/hiddev0 vendor: American Power Conversion model: Smart-UPS 1500 FW:COM 02.1 / UPS.05.I serial: AS1048120739 power supply: yes updated: Thu Jan 1 01:00:00 1970 (1484122524 seconds ago) has history: yes has statistics: yes ups present: yes state: fully-charged warning-level: none time to empty: 1.9 hours percentage: 100% icon-name: 'battery-full-charged-symbolic' Device: /org/freedesktop/UPower/devices/DisplayDevice power supply: yes updated: Wed Jan 11 08:53:15 2017 (1329 seconds ago) has history: no has statistics: no ups present: yes state: fully-charged warning-level: none time to empty: 1.9 hours percentage: 100% icon-name: 'battery-full-charged-symbolic'
Can you check the "powermanagement" dataengine with plasmaengineexplorer (part of plasma-sdk). I suspect the "Battery" source (that is created by combining the power supply ones) is buggy. Please check what it says in "Battery" for "Has Cumulative" and "Has Battery" and the "Percent". I don't have an UPS, unfortunately, can you perhaps test a patch?
Ok I think I have it. The combined source uses the energy (Wh) of the batteries to determin percentage. "This property is only valid if the property type has the value "battery"." And battery != ups, so this is why it breaks for you.
However, I already have a case for exactly this here: if (count == 1) { // Energy is sometimes way off causing us to show rubbish; this is a UPower issue // but anyway having just one battery and the tooltip showing strange readings // compared to the popup doesn't look polished. (we don't count the display device, so this code path should be hit on your machine :/)
Can you reproduce this issue with the latest Fedora version?
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This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!