I ended up using a precompiled 2.6.34 mainline kernel instead of compiling myself upstream sources (they told me it's basically the same thing).
Test results: the same as 2.6.32, Fn+F8 does nothing in X and outputs a "p" in gnome-terminal. Following suggestions on the gmane linux.ubuntu.kernel.devel.general group, I've already tried to add acpi_osi="!Windows 2009" boot argument but it does not solve the problem in 2.6.32 nor 2.6.34. either. ** Tags removed: needs-upstream-testing ** Changed in: linux (Ubuntu) Status: Incomplete => New -- switching to external VGA monitor does not work anymore on dell precision M4400 and Ubuntu 10.04 https://bugs.launchpad.net/bugs/585258 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