Because of work I have no time to upgrade into 14.10 just because of the kernel 3.16, I think in some point soon 3.16 should be available also for 14.04 trough the standard repositories channel. 14.10 is kind of new and I'm aware if will be buggy or not for my particular setup, in the past I had to many bad experiences and time waste keeping my system always in the last release, so I prefer only to upgrade and run the risk of the new release install only when an LTS version comes out.
Anyhow I will make another tryout to this last build you made for kernel 3.16 on your ppa and see if now it works for me still under 14.04. I'm also on the doubt if my system supports DP 1.2. But, for being a DELL XPS 14 a modern laptop I'm 90% sure it should. I think I will be asking to DELL support if they can provide me a confirmation about this for my particular hardware. -- 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 X.org xf86-video-intel: Unknown Status in “xserver-xorg-video-intel” package in Ubuntu: Confirmed Bug description: SRU Justification: Impact: Many users expect the possibility to use the DP1.2 MST feature which enables them to use a number of different display setups: daisy-chaining DP1.2 displays, some 4K displays appearing as 2 separate displays, 3D displays. This however is not supported in Ubuntu stable kernel. Fix: A series of 18 cherry-picks from v3.17 kernel backported to v3.16 by the original author of the feature: David Airlie. Regression Potential: These patches were merged upstream in v3.17 without any reported regressions. Original 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/xserver-xorg-video-intel/+bug/1104230/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
