https://bugs.freedesktop.org/show_bug.cgi?id=46711
--- Comment #13 from Jerome Glisse glisse@freedesktop.org 2012-04-17 09:37:38 PDT --- Run through ssh "udevadm monitor" when pluging/unpluging screen you should see event there. If you don't it's kernel issue, if you do it might be your ddx was not build with the uevent code enabled (which would be a distribution issue). You can try building your ddx yourself and make sure you have libudev-devel