I verified again that it is not X. The hang also occurs when booting into multi-user.target and even after purging X.org.
I felt adventorous and did the following: I booted into rescue mode. Then I let a shell loop start every service in /lib/systemd/system with 1 sec delay. All service came up without issues and I got the system to the same state as multi-user.target would. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1746418 Title: System freezes when starting Xorg after installing linux- image-4.13.0-32-generic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1746418/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs