How to check you have this issue: 1) get provided resume script, replace /usr/share/initramfs-tools/scripts/local-premount/resume with it 2) sudo update-initramfs -k $(uname -r) -u 3) sudo systemctl hibernate 4) edit grub menu entry, add 'debug' parameter to kernel command line, boot 5) look into /run/initramfs/initramfs.debug, if you see following lines, you have this issue: + /scripts/local-premount/resume Success: Resume device: 'UUID=106238b0-707d-4422-866d-a7534da50702' () Failure: Failed to get /sys/class/block//dev major/minor
** Attachment added: "resume script with extra debug messages" https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1769297/+attachment/5134182/+files/resume -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1769297 Title: resume from hibernation broken when resume image is autodetected To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1769297/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs