Apologies for the spam, but I just fixed it. Turns out my video adapter was only set to 256MB. Changing it to 512MB in the BIOS has all three monitors working consistently \o/.
Thanks so much Dariusz, it's great to have this set-up going finally! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1104230 Title: DisplayPort 1.2 MST support is missing in the Intel driver To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/1104230/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs