Adding some information in case it's useful. Old - but still useful - Intel Core 2 laptop with discrete Mobility Radeon GPU. I had nvidia packages installed for development purposes years ago, but don't really use them any more. After the upgrade from 17.10 to 18.04 (only performed 2018-05-12, several days after official release), I noticed single-threaded 100% CPU usage from systemd-udevd, with modprobe starting and exiting over and over again. I saw lots of messages complaining about NVIDIA hardware not being found in dmesg output. After uninstalling the nvidia packages and rebooting, the high CPU usage seemed to go away.
So at least on my system, it seems there was a conflict between having nvidia drivers present with no NVIDIA hardware available. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to bluez in Ubuntu. https://bugs.launchpad.net/bugs/1759836 Title: systemd-udevd consumes 100% of CPU Status in Bluez Utilities: Unknown Status in linux: Unknown Status in bluez package in Ubuntu: Incomplete Status in systemd package in Ubuntu: Confirmed Bug description: The systemd-udevd proccess consumes 100% of a thread everytime, but i'm not noticing any difference in my computer. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: systemd 237-3ubuntu6 ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10 Uname: Linux 4.15.0-13-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.20.9-0ubuntu2 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Thu Mar 29 08:52:54 2018 InstallationDate: Installed on 2018-03-05 (23 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180304) MachineType: Dell Inc. Inspiron N5010 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-13-generic root=UUID=3c29e292-f1ae-45e1-a0ed-a82524278ce1 ro quiet splash vt.handoff=1 SourcePackage: systemd SystemdDelta: [EXTENDED] /lib/systemd/system/rc-local.service → /lib/systemd/system/rc-local.service.d/debian.conf [EXTENDED] /lib/systemd/system/user@.service → /lib/systemd/system/user@.service.d/timeout.conf 2 overridden configuration files found. UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 01/25/2011 dmi.bios.vendor: Dell Inc. dmi.bios.version: A12 dmi.board.name: 08R0GW dmi.board.vendor: Dell Inc. dmi.board.version: A12 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: A12 dmi.modalias: dmi:bvnDellInc.:bvrA12:bd01/25/2011:svnDellInc.:pnInspironN5010:pvrA12:rvnDellInc.:rn08R0GW:rvrA12:cvnDellInc.:ct8:cvrA12: dmi.product.name: Inspiron N5010 dmi.product.version: A12 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/bluez/+bug/1759836/+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
