This is still an issue with Hardy... I did some reading and apparently the ACPI issue is due to Ubuntu developers messing around with Thinkpad ACPI calls / keys. The Thinkpad ACPI developer specific wrote about this (I'll try to find the link) and how this is a bad idea.
-- LCD Brightness buttons do not work on Thinkpad X61 Tablet https://bugs.launchpad.net/bugs/172985 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
