After first reboot with BIOS 1.12.2 all seems fine, the update seems even to have made the process of hooking up the docking station and activating the external monitors faster.
After first sleep and wakeup, no battery pinging that I can see with udevadm monitor, not even at a slow pace (but the battery is more than full). Should I retry during battery recharge? -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1944409 Title: Systemd uses CPU after wakeup due to power_supply BAT0 (battery) continued polling Status in OEM Priority Project: New Status in systemd package in Ubuntu: Confirmed Bug description: My setup: - Dell Latitude 7520 - Dell WD15 USB C docking station - Ubuntu 20.04.3 - systemd 245.4-4ubuntu3.13 - uname -a: Linux CLIFMI085 5.13.0-1012-oem #16-Ubuntu SMP Tue Sep 7 09:23:08 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux I leave my laptop docked and, after waking it up from sleep, the fans start blowing. After a quick inspection with top/htop, I always see /usr/lib/systemd/systemd-udev consuming 50+% of my CPU. After a quick search, I discover that I can use `udevadm monitor` to check what device is making all this fuss, and this is the output: UDEV [92591.827159] change /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply) UDEV [92591.873819] change /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply) UDEV [92591.920022] change /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply) UDEV [92591.967005] change /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply) UDEV [92592.018200] change /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply) UDEV [92592.068351] change /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply) UDEV [92592.115100] change /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply) UDEV [92592.166201] change /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply) UDEV [92592.213318] change /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply) UDEV [92592.261046] change /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply) UDEV [92592.308824] change /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply) UDEV [92592.356577] change /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply) UDEV [92592.403766] change /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply) UDEV [92592.451164] change /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply) As you can see, the battery status is being polled every 0.05s. To fix this, I just need to restart the service with: sudo systemctl restart systemd-udevd systemd-udevd-kernel.socket systemd-udevd-control.socket Afterwards, this is the output of `udevadm monitor`: KERNEL[92739.612371] change /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply) UDEV [92739.646888] change /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply) KERNEL[92741.076823] change /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply) UDEV [92741.099370] change /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply) KERNEL[92742.539438] change /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply) UDEV [92742.573812] change /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply) As you can see, the battery is now being polled every ~1.5s, which is fine. To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1944409/+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
