fglrx is the driver for my monitor, so I think that would explain the observed behavior --- if the new kernel won't load the driver, then I get a black screen but can still get a terminal.
I don't think disabling SecureBoot is an option (it's a dual-boot machine and I don't want to break something permanently), but I've found something online about using /usr/src/linux-headers-$(uname -r)/scripts /sign-file to self-sign a driver for SecureBoot. The instructions aren't working for me right now, but I'll work on that and get back to you. If that works, then yeah, we can assume that it's a SecureBoot issue. Thank you! -- 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
