I have the same (or very similar) issue with my system. For me the high CPU usage is related especially to resuming from suspend. After resuming the system is very unresponsive for around 1-2 minutes, with gnome-shell taking 80-100% cpu. After that the cpu usage slowly decreases, but stays around 20% when idle.
This bug might be related to the following bugs: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=676337 https://bugzilla.redhat.com/show_bug.cgi?id=748241 My system info: DistroRelease: Ubuntu 12.04 EcryptfsInUse: Yes InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) MarkForUpload: True NonfreeKernelModules: fglrx Package: gnome-shell 3.4.1-0ubuntu2 PackageArchitecture: amd64 ProcEnviron: TERM=xterm SHELL=/bin/bash PATH=(custom, user) LANG=en_GB.UTF-8 LC_CTYPE=en_GB.UTF-8 ProcVersionSignature: Ubuntu 3.2.0-29.46-generic 3.2.24 SourcePackage: gnome-shell Tags: precise Uname: Linux 3.2.0-29-generic x86_64 UpgradeStatus: Upgraded to precise on 2012-06-06 (194 days ago) fglrxinfo: display: :0 screen: 0 OpenGL vendor string: Advanced Micro Devices, Inc. OpenGL renderer string: AMD Radeon HD 6670 OpenGL version string: 4.2.11627 Compatibility Profile Context ** Bug watch added: Debian Bug tracker #676337 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=676337 ** Bug watch added: Red Hat Bugzilla #748241 https://bugzilla.redhat.com/show_bug.cgi?id=748241 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1001000 Title: gnome-shell high cpu usage To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1001000/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
