Can you try with 15.04 (stable) or 15.10 (development) releases? There were lots of changes since 3.8, and this bug may be fixed there.
** Package changed: gnome-flashback (Ubuntu) => gnome-panel (Ubuntu) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-panel in Ubuntu. https://bugs.launchpad.net/bugs/1487404 Title: gnome-panel spins causing high cpu in Trusty 14.04 Status in gnome-panel package in Ubuntu: New Bug description: Machine Make : Dell Inspiron 1440 , Intel® Core™2 Duo CPU T6600 @ 2.20GHz × 2 . ----------------------- Graphics support : Mobile Intel® GM45 Express Chipset . ------------------------ OS/Install : Fresh install of Ubuntu 14.04.3 desktop (kernel 3.19.0-26-generic) machine with "gnome-session flashback" installed. -------------- UI Session : "Gnome session with metacity" option login -------------- Issue : Moving cursor near Applications menu (next to Places) causes flickering in screen together with high CPU usage caused by "gnome-panel" process. More Data: It appears that gnome-panel is spinning on a mutex causing high cpu usage . To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-panel/+bug/1487404/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

