I come across to read the thread at http://archives.mn-linux.org/pipermail/tclug-list/2013-January/062818.html I have the same problem that after video driver is installed with packages bumblebee and bumblebee-nvidia. Command `xrandr -q` doesn't detect VGA1 monitor, only showing VGA1 disconnected. BIOS driver is configured to Boot Display Device: ThinkPad LCD Graphics Device: NVIDIA Optmus OS Detection for NVIDIA Optimus: Disabled Changing Graphics Device to Discrete Graphics will have Xorg.0.log logged with message something like "Fail to load module nv". arandr also shows LVDS as well. How can I detect external monitor? I appreciate any suggestion. Thank you. Os: debian amd64 (testing jessie) Kernel: 3.2.04 rt laptop: w530 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.mn-linux.org/pipermail/tclug-list/attachments/20130614/a8243a09/attachment-0001.html>