> Does the lockup happen as soon as you reach the login screen or does it happen once you put in your password and hit enter?
It sometimes happens as soon as the login screen shows up, sometimes it happens after you hit enter, and roughly 1:8 tries it will make it all the way to the desktop. > Do you happen to use NVIDIA graphics drivers on the system that's locking up? I believe that all of our systems are running NVIDIA drivers, but we have replicated it on a system not running the NVIDIA driver. > Erich, could you include the output of 'iucode-tool --scan-system'? Most of them report: iucode-tool: system has processor(s) with signature 0x000906e9 We have one that reports: iucode-tool: system has processor(s) with signature 0x000906ea -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1759920 Title: linux-image-4.13.0-37-generic locks up at login screen with intel- microcode 3.20180312.0 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/intel-microcode/+bug/1759920/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
