I tried systemctl stop nvidia-persistenced nvidia-persistenced --no-persistence-mode nvidia-smi --persistence-mode=Disabled but none of them helped. nvidia-smi failed because it couldn't communicate with the nvidia driver.
The system was created using a raw disk in a virtual machine (VirtualBox). I then booted off the disk so it was running for real, and accepted the offered nvidia drivers. Finally, I shutdown and restarted in the VM. That is the context for the loop. The VM has no nvidia hardware, and so obviously there is no reason for the driver to load. Ross -- 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/1655584 Title: systemd-udevd busyloops when nvidia kernel module fails to load Status in systemd package in Ubuntu: Confirmed Bug description: On a machine where nvidia-367 is installed, but the driver won't attach (due to the nvidia card being older and requiring legacy drivers), systemd-udevd repeatedly attempts to load it anyway, causing high CPU and memory usage. I observed the systemd-udevd process at 98% CPU usage and 2.5G RSS reported by top(1); restarting the service reduces resource usage momentarily, but it appears to be climbing back up (I suspect the number of events is growing). Workaround is of course installing the correct driver package, but udevd really ought not behave like this if something fails to load. Some journal entries for systemd-udevd.service: Jan 11 11:22:11 systemd-udevd[11651]: Process '/sbin/modprobe nvidia-drm' failed with exit code 1. Jan 11 11:22:11 systemd-udevd[11651]: Process '/sbin/modprobe nvidia-uvm' failed with exit code 1. Jan 11 11:22:11 systemd-udevd[11651]: Process '/usr/bin/nvidia-smi' failed with exit code 9. Jan 11 11:22:11 systemd-udevd[11651]: Process '/sbin/modprobe nvidia-modeset' failed with exit code 1. Jan 11 11:22:11 systemd-udevd[11651]: Process '/sbin/modprobe nvidia-drm' failed with exit code 1. Jan 11 11:22:11 systemd-udevd[11651]: Process '/sbin/modprobe nvidia-uvm' failed with exit code 1. Jan 11 11:22:12 systemd-udevd[11651]: Process '/usr/bin/nvidia-smi' failed with exit code 9. Jan 11 11:22:12 systemd-udevd[11651]: Process '/sbin/modprobe nvidia-modeset' failed with exit code 1. Jan 11 11:22:12 systemd-udevd[11651]: Process '/sbin/modprobe nvidia-drm' failed with exit code 1. Jan 11 11:22:12 systemd-udevd[11651]: Process '/sbin/modprobe nvidia-uvm' failed with exit code 1. dmesg shows repeated failures for loading the nvidia module: [1675406.587926] NVRM: The NVIDIA GeForce 9300 GE GPU installed in this system is NVRM: supported through the NVIDIA 340.xx Legacy drivers. Please NVRM: visit http://www.nvidia.com/object/unix.html for more NVRM: information. The 367.57 NVIDIA driver will ignore NVRM: this GPU. Continuing probe... [1675406.587936] NVRM: No NVIDIA graphics adapter found! [1675406.588078] NVRM: NVIDIA init module failed! Release information: # lsb_release -rd Description: Ubuntu 16.04.1 LTS Release: 16.04 # apt policy systemd udev systemd: Installed: 229-4ubuntu13 Candidate: 229-4ubuntu13 Version table: *** 229-4ubuntu13 500 500 http://ftp.funet.fi/pub/Linux/mirrors/ubuntu/archive xenial-updates/main amd64 Packages 100 /var/lib/dpkg/status 229-4ubuntu10 500 500 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages 229-4ubuntu4 500 500 http://ftp.funet.fi/pub/Linux/mirrors/ubuntu/archive xenial/main amd64 Packages udev: Installed: 229-4ubuntu13 Candidate: 229-4ubuntu13 Version table: *** 229-4ubuntu13 500 500 http://ftp.funet.fi/pub/Linux/mirrors/ubuntu/archive xenial-updates/main amd64 Packages 100 /var/lib/dpkg/status 229-4ubuntu10 500 500 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages 229-4ubuntu4 500 500 http://ftp.funet.fi/pub/Linux/mirrors/ubuntu/archive xenial/main amd64 Packages To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1655584/+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
