As requested, booted using battery power with setting "auto" in /lib/udev/rules.d/99-laptop-mode.rules. Then changed setting back to "force" and plugged in an external USB HDD (Transcend StoreJet).
The USB device seemed to be mounted successfully and I could write to it. Dmesg output attached. ** Attachment added: "dmesg.txt" https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1726930/+attachment/5063356/+files/dmesg.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1726930 Title: System fails to start (boot) on battery due to read-only root file- system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/laptop-mode-tools/+bug/1726930/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
