This isn't chromium, it's your window manager or compositing manager crashing. If you are already reporting a bug via a popup, then you can ignore this bug report. If you haven't, then you should make this bug Affect a Project of your desktop, e.g.,unity or compiz or whatever you're using.
** Changed in: chromium-browser (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1153359 Title: chromium browser locks system when minimised To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1153359/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs