This is affecting me as well. I had to connect up a monitor and keyboard to see what's happening - it's a kernel panic on boot. Machine is a Dell Precision T5500.
Another data point, 4.13.0-26-generic (recovery mode) works OK. Screenshot attached. ** Attachment added: "Screenshot of kernel panic" https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1742675/+attachment/5035135/+files/IMG_0776.jpg -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1742675 Title: after upgrade to linux-image-extra-4.13.0-26-generic the system does not start at all To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1742675/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
