Such freezes are more likely a kernel issue. Do you have any sign of life from the machine when frozen, like being able to login remotely?
Please try installing 'openssh-server' and see if you can still log in to that when it appears frozen. ** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu) ** Summary changed: - Xorg freeze + Xorg freeze after wakeup from hibernate ** Changed in: xorg-server (Ubuntu) Status: New => Incomplete ** Also affects: linux (Ubuntu) Importance: Undecided Status: New ** Changed in: linux (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1777021 Title: Xorg freeze after wakeup from hibernate To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1777021/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs