This may have been happening as early as Maverick (Bug #658342). At that time it was marked as a duplicate "Multiple Keyboard Layouts unusable: continuously changes layout + 100% CPU usage" (Bug #625793). I have head keyboard layouts mentioned here ~ so maybe. As far as I know I am not using multiple layouts.
One thing I do observe ( probably totally irrelevant). I often hear my CPU fan pitch change when I leave my Ubuntu Desktop running long enough for the screen to go dark (especially I am running a Flash video in Youtube or something). I only mention this because I know that the idle-activation-enabled setting is related to the gnome-settings-daemon (at least to gsettings / dconf-editor) (http://askubuntu.com/questions/67355/how-do-i-completely-turn-off-screensaver-and-power-management). I cant find what's causing it because as so as I restore the screen to normal - CPU utilization goes back to normal. So if I wanted to do an experiment to see if it was gnome-settings- daemon was going berzerk while I was away I would need a console based way to capture CPU utilization for just that particular PID. I was thinking : "top -b -p PID" but that is a mess. Does anybody have a better idea. Or am I totally wasting my time here ?? -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-settings-daemon in Ubuntu. https://bugs.launchpad.net/bugs/969359 Title: gnome-settings-daemon consumes 100% cpu Status in “gnome-settings-daemon” package in Ubuntu: Confirmed Status in “gnome-settings-daemon” package in Fedora: Unknown Bug description: I don't know how to reproduce this bug, but after varying amounts of normal usage of my laptop, I notice gnome-settings-daemon is consuming 100% (approx) CPU. I am not sure how to restart gnome-settings-daemon, I tried opening a terminal and running gnome-settings-daemon again but this crashes my system - my external monitor switches off and my laptop locks up. I am able to reboot with SysRq+REISUB. Sorry I cannot provide more information - it happens twice now, maybe someone can tell me how to get more information for the next time this happens. $ lsb_release -rd Description: Ubuntu precise (development branch) Release: 12.04 $ apt-cache policy gnome-settings-daemon gnome-settings-daemon: Installed: 3.4.0-0ubuntu2 Candidate: 3.4.0-0ubuntu2 Version table: *** 3.4.0-0ubuntu2 0 500 http://gb.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages 100 /var/lib/dpkg/status ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: gnome-settings-daemon 3.4.0-0ubuntu2 ProcVersionSignature: Ubuntu 3.2.0-20.33-generic 3.2.12 Uname: Linux 3.2.0-20-generic x86_64 ApportVersion: 1.95-0ubuntu1 Architecture: amd64 Date: Fri Mar 30 17:16:02 2012 InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120301) ProcEnviron: LANGUAGE=en_GB:en TERM=xterm PATH=(custom, user) LANG=en_GB.UTF-8 SHELL=/bin/bash SourcePackage: gnome-settings-daemon UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/969359/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp