Thanks for the info... Playing a bit with it, I realized that the issue is actually related to using a .Xmodmap file. When I remove it from $HOME the issue is gone but it comes back as soon as I create a new .Xmodmap (which is important for me to get catalan characters in a us keyboard).
** Summary changed: - xorg temporarily reaches high cpu usage (90%-100%) after resume + .Xmodmap file makes xorg temporarily reach high cpu usage (90%-100%) after resume or when coming back from tty to X session -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/998310 Title: .Xmodmap file makes xorg temporarily reach high cpu usage (90%-100%) after resume or when coming back from tty to X session To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/998310/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs