So this seems to be a kernel issue. The hid-logitech-hidpp kernel driver supports 2 battery reporting modes:
1. Status reporting, here the device basically reports 3 levels low / normal / high 2. mileage reporting, this is where an actual percentage left gets reported. I would expect at least the master mx to support this, but the info shown by upower where there is an "ignore" next to the percentage suggests that that is not the case (when only low/normal/high reporting is supported upower makes up a percentage for apps which rely on that part of the dbus API, which no modern app does). So I believe that the problem here is that the kernel is using method 1, where as solaar seems to using 2. (mileage style reporting). Can you provide full "solaar show" output please? -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to upower in Ubuntu. https://bugs.launchpad.net/bugs/1903995 Title: upower report wrong battery percentage for Logitech Unify devices Status in upower package in Ubuntu: Triaged Bug description: The battery percentage reported by upower for Logitech devices connected using Unify receiver are wrong. Below are the results for two devices: Mouse and Keyboard: * Battery percentages reported by Unify receiver using Solaar: $ solaar show | grep -iP "^(( \d: )|(.*batt.*))" 1: Wireless Keyboard K270(unifying) 4: BATTERY STATUS {1000} Battery: 70%, discharging. 2: Wireless Mouse MX Master 7: BATTERY STATUS {1000} Battery: 20%, discharging. * Battery percentages reported by upower: $ upower -i /org/freedesktop/UPower/devices/keyboard_hidpp_battery_0 native-path: hidpp_battery_0 model: Wireless Keyboard K270 serial: 4003-1a-39-5f-c1 power supply: no updated: Thu 12 Nov 2020 13:59:18 CET (119 seconds ago) has history: yes has statistics: yes keyboard present: yes rechargeable: yes state: discharging warning-level: none battery-level: normal percentage: 55% (should be ignored) icon-name: 'battery-low-symbolic' $ upower -i /org/freedesktop/UPower/devices/mouse_hidpp_battery_1 native-path: hidpp_battery_1 model: Wireless Mouse MX Master serial: 4071-f8-eb-bf-d1 power supply: no updated: Thu 12 Nov 2020 14:03:14 CET (27 seconds ago) has history: yes has statistics: yes mouse present: yes rechargeable: yes state: discharging warning-level: low battery-level: low percentage: 10% (should be ignored) icon-name: 'battery-caution-symbolic' Basically the difference is big so I'm getting a lot of notifications related to low battery even if the battery is OK: * Mouse, upower: 10% real (Solaar): 20% * Keyboard: upower: 70% real (Solaar): 55% ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: upower 0.99.11-1build2 ProcVersionSignature: Ubuntu 5.4.0-53.59-generic 5.4.65 Uname: Linux 5.4.0-53-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu27.11 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Thu Nov 12 13:58:35 2020 InstallationDate: Installed on 2020-04-19 (206 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Beta amd64 (20200417) SourcePackage: upower UpgradeStatus: No upgrade log present (probably fresh install) mtime.conffile..etc.apport.crashdb.conf: 2020-06-17T11:02:56.934699 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/upower/+bug/1903995/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
