Given that your apport output is from the previous kernel, this line is very suggestive:
[ 18.073838] fglrx: module verification failed: signature and/or required key missing - tainting kernel The 3.13.0-92 kernel is the first one in this series which implements Ubuntu's updated SecureBoot policy, which requires specific action by the machine administrator in order to allow unsigned modules. You should have been prompted for this on upgrade. Do you remember seeing such a prompt? Can you please attach the output of the following command: $ debconf-show shim-signed To successfully upgrade to the new kernel, you will want to: - run 'sudo update-secureboot-policy', and choose to disable SecureBoot - run 'sudo apt-get install linux-signed-image-generic' - reboot to the UEFI prompts, in order to confirm the SecureBoot policy change. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1603655 Title: After update, xorg will not boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1603655/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
