I see the same symptoms, with the following additional observations (in my case)
In top, WebKitWebProcess indicates: 125-140%CPU usage on the initial welcome screen and the "Introduction" sub menu. CPU usage varies around 50-75% on the "Getting Started" sub menu. With all other menu choices, WebKitWebProcess uses < 5% CPU. Viewing the Resources tab in the MATE system monitor shows ~85% usage on both CPUs when viewing the affected menu choices. This is with Ubuntu Mate 18.04 running under VirtualBox with 2 CPUs assigned to it. This appears to be a false indication. The system is still very responsive whether the welcome screen is open or not. The symptoms only occur (for me) under VirtualBox. This doesn't occur when running natively on the same computer. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1767121 Title: Ubuntu MATE Welcome high CPU usage. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-mate-welcome/+bug/1767121/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
