Vincent, what you could do is to take a look at this instruction: https://01.org/linuxgraphics/node/358
Based on this you could: sudo add-apt-repository ppa:dgadomski/linux-mst sudo add-apt-repository ppa:xorg-edgers/ppa sudo apt-get update sudo apt-get install linux-image-3.16.0-19-generic # this will install the patched kernel for trusty sudo apt-get install xserver-xorg-video-intel # this should get you the xorg-edgers intel driver with all the dependencies needed Now you can reboot and verify with xrandr (like in the linked instruction) whether your displays are available or not. Please make sure you have ppa-purge available (sudo apt-get install ppa-purge) so you will be able to revert it later if anything goes wrong with: sudo ppa-purge ppa:dgadomski/linux-mst ppa:xorg-edgers/ppa -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1104230 Title: DisplayPort 1.2 MST support is missing in the Intel driver Status in “xserver-xorg-video-intel” package in Ubuntu: Confirmed Bug description: I have two recent DisplayPort monitors, both supporting the 1.2 version of the standard and one containing an MST hub (DELL 2913WM). I have an Intel Haswell based NUC connected over mini-displayport to the display containing the hub, then the second display is plugged in that one over DisplayPort. DisplayPort 1.2 is enabled on the display containing the hub and the second display lights up fine but just works as a clone of the first display, without ever showing up in xrandr, dmesg or any other useful logs I could find. My understanding of MST is that the second display should show up as DP2 on my laptop so I can configure it as I would any other display. UPDATE: Updated the bug report after it was pointed out that the original test hardware, a Lenovo x230 isn't DP 1.2 capable. The same test on hardware also fails, due to missing support for MST in the driver. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1104230/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
