It's the Intel GM915 integrated chipset. The Fn-F4 still doesn't do anything in the final release. To be honest I've no idea whether this is an ACPI thing (key not detected) or X thing (key detected but switch to external monitor not activated properly).
I'll attach log and xorg.conf as requested. cheers Julian ** Attachment added: "Xorg.0.log" http://librarian.launchpad.net/3219525/Xorg.0.log ** Attachment added: "xorg.conf" http://librarian.launchpad.net/3219532/xorg.conf -- External monitor switch does not work on HP Pavilion dv4000 laptop https://launchpad.net/bugs/44437 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
