Thanks for reporting this. I can confirm the bug and the proposed solution. I ran into issues with the 470 driver and hence uninstalled it. Since then my computer refused to suspend or hibernate. I always just got logged out.
After deleting the following files, it works so far: /etc/systemd/system/systemd-suspend-service.requires/nvidia-suspend.service /etc/systemd/system/systemd-suspend-service.requires/nvidia-resume.service /etc/systemd/system/systemd-hibernate-service.requires/nvidia-suspend.service /etc/systemd/system/systemd-hibernate-service.requires/nvidia-resume.service Operating System: Kubuntu 21.10 KDE Plasma Version: 5.24.1 KDE Frameworks Version: 5.91.0 Qt Version: 5.15.2 Kernel Version: 5.13.0-28-generic (64-bit) Graphics Platform: X11 Processors: 16 × 11th Gen Intel® Core™ i9-11950H @ 2.60GHz Memory: 31,0 GiB of RAM Graphics Processor: Mesa Intel® UHD Graphics -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-470 in Ubuntu. https://bugs.launchpad.net/bugs/1942133 Title: Nvidia driver packages prevent suspend due to leftover Systemd units Status in nvidia-graphics-drivers-470 package in Ubuntu: Confirmed Bug description: When the nvidia driver packages are uninstalled, they leave some symlinks that prevent suspend. I whink that, when attempting to suspend, the error is logged as this (edited): ModemManager[3287]: <warn> [sleep-monitor] inhibit failed: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying upowerd[5771]: Could not acquire inhibitor lock: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying dbus-daemon[2888]: [system] Activating via systemd: service name='org.freedesktop.login1' unit='dbus-org.freedesktop.login1.service' requested by ':1.53' (uid=1000 pid=8227 comm="/usr/lib/x86_64-linux-gnu/indicator-session/indica" label="unconfined") systemd[1]: systemd-logind.service: Main process exited, code=exited, status=1/FAILURE systemd[1]: systemd-logind.service: Failed with result 'exit-code'. systemd[1]: systemd-logind.service: Scheduled restart job, restart counter is at 7. systemd[1]: Stopped Login Service. systemd[1]: Condition check resulted in Load Kernel Module drm being skipped. systemd[1]: Starting Login Service... I've deleted the problematic symlinks while trying to solving the problem, however, they should be these: /etc/systemd/system/systemd-suspend-service.requires/nvidia-suspend.service /etc/systemd/system/systemd-suspend-service.requires/nvidia-resume.service /etc/systemd/system/systemd-hibernate-service.requires/nvidia-suspend.service /etc/systemd/system/systemd-hibernate-service.requires/nvidia-resume.service I've briefly checked before removing them; at least a couple of them were masked, but they were still causing the problem. I don't see any reason why they should hang around the systemd configuration once the packages are purged. Additionally, this is a problem that is not easy to diagnose. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: nvidia-driver-470 (not installed) ProcVersionSignature: Ubuntu 5.11.0-27.29~20.04.1-generic 5.11.22 Uname: Linux 5.11.0-27-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.11-0ubuntu27.18 Architecture: amd64 CasperMD5CheckResult: skip CasperVersion: 1.445.1 CurrentDesktop: MATE Date: Mon Aug 30 21:10:52 2021 LiveMediaBuild: Ubuntu-MATE 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819.1) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=C.UTF-8 SHELL=/bin/bash SourcePackage: nvidia-graphics-drivers-470 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-470/+bug/1942133/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
