I am not quite sure I have *this* bug, because it continues after I close Chrome.
I am using Bionic Beaver in a VirtualBox with 4 CPU threads and 4096 (later 6144) MB RAM out of my 2015 MacBook Pro's 8 CPU threads and 16 GB RAM. When I start up, everything seems fine. With one single Terminal open running top, without touching the keyboard or mouse, the gnome- shell runs at some 1 to 4%, which I find extreme, but the system is perfectly useable. The slightest use (unlocking the screen after lock, moving the terminal window, of just hitting space repeatedly to make top refresh), makes the CPU usage of gnome-shell shoot well over 50%, up to 95%. When hitting space, top and xorg never go above 6% each. Using Chrome in itself does not cause any problems for me. However, after opening a video full-screen, the system slows down to a point where it is not useable, and this state continues after closing Chrome. The mouse pointer itself moves without difficulty, but the highlighting of elements under the mouse and the change of shape of the mouse pointer takes up to twenty seconds. For example, opening a new terminal by right-clicking on the left icon and choosing New Terminal needs several (~ tens of) seconds for each click and mouse highlight to be echoed by the screen, while gnome-shell usage is in the 70s. Before doing a fresh reinstall with 18.04, this same hardware was running 16.04, with no problems worth mentioning (when opening 20 heavy tabs at once by telling Chrome to open all the tabs in a folder, I could usually start reading one of the lighter ones after only a second or two, scrolling through it while the others loaded). -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1772365 Title: gnome-shell + chrome doing nothing consumes high CPU all the time To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1772365/+subscriptions -- desktop-bugs mailing list email@example.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs