Kernel 3.19.x has not been supported since August 2016. Also, booting from kernels leftover from previous releases is not recommended/tested/supported.
Kernel support timeframes: https://wiki.ubuntu.com/Kernel/LTSEnablementStack ** Changed in: linux (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1888939 Title: Unable to boot with 3.19.0.43-generic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1888939/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs