Turned out to be related to a bug in GNOME libtop which got fixed upstream. see: https://github.com/mate-desktop/mate-system- monitor/issues/89
Will mark as 'fix commited' as the fix will be in the next stable upstream release. ** Bug watch added: github.com/mate-desktop/mate-system-monitor/issues #89 https://github.com/mate-desktop/mate-system-monitor/issues/89 ** Also affects: mate-desktop via https://github.com/mate-desktop/mate-system-monitor/issues/89 Importance: Unknown Status: Unknown ** Changed in: mate-system-monitor (Ubuntu) Status: New => Fix Committed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1615846 Title: mate-system-monitor shows one CPU too much (16.10, ppc) To manage notifications about this bug go to: https://bugs.launchpad.net/mate-desktop/+bug/1615846/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs