Thanks for those details, it's good to finally see some documentation on what supports MST and what doesn't!
I update the description to reflect the fact that you need 4th gen hardware to get DP 1.2 on Intel. ** Summary changed: - DisplayPort 1.2 MST support seems to be broken in the Intel driver + DisplayPort 1.2 MST support is missing in the Intel driver ** Description changed: 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 my laptop (Lenovo ThinkPad X230, HD4000 Ivy Bridge) connected - over mini-displayport to the display containing the hub, then the second - display is plugged in that one over DisplayPort. + 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. - ProblemType: Bug - DistroRelease: Ubuntu 13.04 - Package: xorg 1:7.7+1ubuntu4 - ProcVersionSignature: Ubuntu 3.8.0-1.5-generic 3.8.0-rc4 - Uname: Linux 3.8.0-1-generic x86_64 - .tmp.unity.support.test.0: - - ApportVersion: 2.8-0ubuntu2 - Architecture: amd64 - CheckboxSubmission: 12108b8b8b67d760cdd84f1b9574e7f3 - CheckboxSystem: bb422ca46d02494cdbc459927a98bc2f - CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell] - CompositorRunning: compiz - Date: Thu Jan 24 12:13:30 2013 - DistUpgraded: Fresh install - DistroCodename: raring - DistroVariant: ubuntu - ExtraDebuggingInterest: Yes, including running git bisection searches - GraphicsCard: - Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller]) - Subsystem: Lenovo Device [17aa:21fa] - InstallationDate: Installed on 2012-09-02 (143 days ago) - InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120902) - MachineType: LENOVO 2306CTO - MarkForUpload: True - ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-1-generic root=UUID=f72ebb89-0931-4549-ab8f-10e9022e243b ro quiet splash "acpi_osi=!Windows 2012" vt.handoff=7 - SourcePackage: xorg - UpgradeStatus: No upgrade log present (probably fresh install) - XorgConf: - Section "Device" - Identifier "Card0" - Driver "intel" - Option "AccelMethod" "sna" - EndSection - dmi.bios.date: 09/11/2012 - dmi.bios.vendor: LENOVO - dmi.bios.version: G2ET82WW (2.02 ) - dmi.board.asset.tag: Not Available - dmi.board.name: 2306CTO - dmi.board.vendor: LENOVO - dmi.board.version: Not Defined - dmi.chassis.asset.tag: No Asset Information - dmi.chassis.type: 10 - dmi.chassis.vendor: LENOVO - dmi.chassis.version: Not Available - dmi.modalias: dmi:bvnLENOVO:bvrG2ET82WW(2.02):bd09/11/2012:svnLENOVO:pn2306CTO:pvrThinkPadX230:rvnLENOVO:rn2306CTO:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable: - dmi.product.name: 2306CTO - dmi.product.version: ThinkPad X230 - dmi.sys.vendor: LENOVO - version.compiz: compiz 1:0.9.9~daily13.01.21-0ubuntu1 - version.ia32-libs: ia32-libs N/A - version.libdrm2: libdrm2 2.4.41-0ubuntu1 - version.libgl1-mesa-dri: libgl1-mesa-dri 9.0.2-0ubuntu1 - version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A - version.libgl1-mesa-glx: libgl1-mesa-glx 9.0.2-0ubuntu1 - version.xserver-xorg-core: xserver-xorg-core 2:1.13.1.901-0ubuntu2 - version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2 - version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.0.0-0ubuntu1 - version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.19-0ubuntu2 - version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.6-0ubuntu1 - xserver.bootTime: Thu Jan 24 12:07:10 2013 - xserver.configfile: /etc/X11/xorg.conf - xserver.errors: - - xserver.logfile: /var/log/Xorg.0.log - xserver.version: 2:1.13.1.901-0ubuntu2 - xserver.video_driver: intel + 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. -- 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/ubuntu/+source/xserver-xorg-video-intel/+bug/1104230/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
