Problem confirmed on 13.10. I can make the problem happen systematically (at present) by loading a large and complex document into LibreOffice. LO starts repaginating, and then the unity-panel-service goes into its busy loop.
* It is not caused by memory exhaustion; my box has 16GB and it's barely used. * There is no visible file access. * The problem continues if I close the document and exit LibreOffice. * The duration of the symptoms are proportional to the document size. If I cut it by half, the problem lasts only half as long. * As long as I'm working in LibreOffice on such large documents, the problem happens every so often. I've not seen the problem when doing other work. I've attached the system monitor graph showing two incidents. ** Attachment added: "Screenshot from 2013-10-22 15:20:49.png" https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1199877/+attachment/3887360/+files/Screenshot%20from%202013-10-22%2015%3A20%3A49.png -- You received this bug notification because you are a member of DX Packages, which is subscribed to unity in Ubuntu. Matching subscriptions: dx-packages https://bugs.launchpad.net/bugs/1199877 Title: unity-panel-service memory leak and 100% CPU usage Status in The Ubuntu Power Consumption Project: New Status in Unity: In Progress Status in Unity 7.1 series: In Progress Status in “unity” package in Ubuntu: Triaged Bug description: Just going about my business on Ubuntu Raring amd64 on an x230 and I heard the fan kick into action. top showed me that unity-panel- service was consuming all the free cycles on one of my CPUs. I killed it before my machine overheated, so I didn't attach a debugger to see why it was totally pegging out a CPU. I'm not sure if this adds any context, but I was using a LibreOffice spreadsheet and I could not insert a table because the menu had lost it's mind, and then I observed the overly loaded CPU a very short while after that. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-consumption/+bug/1199877/+subscriptions -- Mailing list: https://launchpad.net/~dx-packages Post to : dx-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~dx-packages More help : https://help.launchpad.net/ListHelp