You reported this bug against the 'shim' package. 3.13.0-92-generic is the first version of the kernel for trusty that introduces a new module signing enforcement policy; so this could have been related to shim, but you also report that 3.13.0-91-generic did not boot for you, and that version did not include the module signing enforcement policy. Reassigning to the kernel.
** Package changed: shim (Ubuntu) => linux (Ubuntu) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1610937 Title: After kernel update Kubuntu won't start Status in linux package in Ubuntu: New Bug description: I have Kubuntu 14.04 # uname -a Linux keep 3.13.0-88-generic #135-Ubuntu SMP Wed Jun 8 21:10:42 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux # lsb_release -rd Description: Ubuntu 14.04.5 LTS Release: 14.04 I can't boot on latest versions of linux kernels provided for Kubuntu 14.04. Kubuntu shows "Kubuntu" boot logo and PC completely does not responds at all for a long time until hardware reboot. The last version which I can boot is 3.13.0-88-generic. Next versions: 3.13.0-91-generic and 3.13.0-92-generic has this trouble. I wanted to update to Kubuntu 16.04 but I'm afraid that I will not able to boot with latest kernels. From another side I'm not sure that problem exactly in kernel. I'm ready to provide any additional information. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1610937/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
