This issue is fixed in Debian since July 2018 - initramfs-tools version 0.132, please accept this simple, 3 lines patch from Debian into Ubuntu 18.04 :
https://salsa.debian.org/kernel-team/initramfs- tools/commit/312393b0cf1231125eeff3d1a2b6b778a935c21d Look at bug #1781746 for more info. ** Bug watch added: Debian Bug tracker #861228 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=861228 ** Also affects: initramfs-tools (Debian) via https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=861228 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1811447 Title: update-initramfs generates wrong RESUME if no swap + zram To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1811447/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs