I have this problem currently on an Asus V6V laptop with Edgy and it was working up until a few weeks ago. Running acpi_listen still shows that the button shows up when pressed, but will need to look into it further tonight to determine why it's not triggering.
** Changed in: linux-source-2.6.17 (Ubuntu) Status: Unconfirmed => Confirmed -- Power button presses are not detected https://launchpad.net/bugs/64243 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs