Disregard my issue with my second machine, it didn't have the 'UUID=' part in /etc/default/grub. Adding that solved the issues with that machine as well. So definite +1 solved for me.
That does lead to the question, why doesn't forgetting to add 'UUID=' give a better error message, and instead give /sys/power/resume a seemingly random number for major and minor. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to initramfs-tools in Ubuntu. https://bugs.launchpad.net/bugs/1769297 Title: resume from hibernation broken when resume image is autodetected (UUID= syntax used) Status in initramfs-tools package in Ubuntu: Fix Released Status in initramfs-tools source package in Noble: Fix Committed Bug description: [ Impact ] I found a reason of non-functioning resume from hibernation when resume partition/file is autodetected by intiramfs hook /usr/share/initramfs-tools/hooks/resume. Here is the scenario: 1) hook /usr/share/initramfs-tools/hooks/resume creates config conf/conf.d/zz-resume-auto saved in initrd image, containing one variable: RESUME=UUID=106238b0-707d-4422-866d-a7534da50702 in my case 2) during boot init script sets 'resume' variable to 'RESUME' value from conf/conf.d/zz-resume-auto, then it executes local-premount scripts including local-premount/resume 3) resuming script local-premount/resume (/usr/share/initramfs-tools/scripts/local-premount/resume) tries to get resume device major-minor numbers by these lines: DEV=$(readlink ${resume}) DEV=/sys/class/block/${DEV##*/}/dev if [ -r "$DEV" ]; then read MAJMIN < "$DEV" fi 4) next check fails and resume process silently aborts: if [ -z "$MAJMIN" ]; then exit 1 fi Resuming script fails to get device major-minor because resume=UUID=106238b0-707d-4422-866d-a7534da50702 -- it's not resolved into device path in init script. Commonly mentioned workaround is to explicitly specify kernel parameter resume=UUID=106238b0-707d-4422-866d-a7534da50702 -- only in this case init script resolves it to device path. [ Test Plan ] 1. hibernate: `sudo systemctl hibernate` 2. resume from hibernate 3. `cat /sys/power/resume` should contain the major-minor of the swap [ Other Info ] ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: initramfs-tools 0.130ubuntu3 Uname: Linux 4.16.6-041606-generic x86_64 ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Sat May 5 11:32:31 2018 InstallationDate: Installed on 2018-03-27 (38 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180327) PackageArchitecture: all SourcePackage: initramfs-tools UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1769297/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
