I have just bought a lovely ThinkPad Edge 11 which have ~6 hours of surfing in Windows 7. But unfortunately, a clean Ubuntu 10.10 give me max 4 hours which is not satisfactorily. Therefore I have installed laptop-mode-tools and powertop.
In the sequence of installing and using these tools something have gone wrong. Now, the laptop don't recognize when the power is plugged off so the screen etc. is not dimmed. It still makes a sound when power is plugged in and taken out but I suspect that this is not through Ubuntu. I have tried uninstall of the tools and, of cause, rebooting - but nothing helps. I'm not a pro with Linux so some expertise would be appreciated. Any ideas to how I can restore the settings or get it to recognize "on battery"?
Update: I have tried reinstalling acpi-support, pm-utils and laptop-detect without luck.