Description of problem: I've noticed this error when browsing journalctl -b -o /usr/lib/systemd/system/plymouth-start.service:15: Unit configured to use KillMode=none. This is unsafe, as it disables systemd's process lifecycle management for the service. Please update your service to use a safer KillMode=, such as 'mixed' or 'control-group'. Support for KillMode=none is deprecated and will eventually be removed. Version-Release number of selected component (if applicable): Linux 5.11.13-200.fc33.x86_64 #1 SMP Sun Apr 11 02:08:26 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux How reproducible: setup Full Disk Encryption
Thank you for your bug-report. This is already fixed in Fedora 34. I've prepared an update to bring the F34 changes back for Fedora 33 to also fix this in Fedora 33.
FEDORA-2021-e50f4a64ac has been submitted as an update to Fedora 33. https://bodhi.fedoraproject.org/updates/FEDORA-2021-e50f4a64ac
FEDORA-2021-e50f4a64ac has been pushed to the Fedora 33 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2021-e50f4a64ac` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2021-e50f4a64ac See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2021-e50f4a64ac has been pushed to the Fedora 33 stable repository. If problem still persists, please make note of it in this bug report.