After more poking around, I've found the problem: I had acpi=off in the kernel command line (I had added this previously in order to try to get around some shutdown issues, but it had never affected laptop detection before now).
With acpi=on (or rather, no acpi definition), lapop-detect -v reports "We're a laptop (ACPI batteries found)" -- laptop-detect does not recognise Sony Vaio laptop https://bugs.launchpad.net/bugs/368967 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
