Thanks, Matt. You are right that this is not the primary cause for the hanging. I found out that the freeze issue that is affecting me is - https://www.reddit.com/r/thinkpad/comments/4ajgjh/t460_suspend_problem_with_linux/
BTW, I noticed that the following when the backtrace as discussed in this bug occurs on my laptop: When I switch virtual desktops the image of the window in the previous desktop is shown for some time if the current desktop does not have any windows. This happened consistently with plasma desktop of KDE 5, I have not checked others. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1523088 Title: WARN_ON(!wm_changed) warning and stacktrace in kernel log To manage notifications about this bug go to: https://bugs.launchpad.net/xorg-server/+bug/1523088/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
