@Robert @Giacomo Are Linux kernel 4.4.0-73 ~ 4.4.0-77 all failed to work? Can you paste the output of `lsmod | grep i915` here? Also, which docking station do you use? I have an USB type-C docking station (TB15) at my hand, but I am not sure if you use this one...
@Robert I am not sure which driver Broadwell uses, i915 or i915_bpo. Do you use the port on the Docking station? Does this happen on laptop's port? @Giacomo IIUC "drm/dp/mst: fix kernel oops when turning off secondary monitor" only silence the annoying kernel trace, it does not bring any functional change. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1686189 Title: External monitor connecting problem on Intel graphics card Status in linux package in Ubuntu: Confirmed Status in xorg package in Ubuntu: Confirmed Bug description: I am facing a problem with Intel Graphics driver. I have external monitor and in display settings the second monitor is detecting but it's not working, so could you email me a solution. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3 Uname: Linux 4.4.25-040425-generic x86_64 .tmp.unity_support_test.0: ApportVersion: 2.20.1-0ubuntu2.5 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true CurrentDesktop: Unity Date: Tue Apr 25 21:45:16 2017 DistUpgraded: 2017-04-25 21:07:40,819 DEBUG icon theme changed, re-reading DistroCodename: xenial DistroVariant: ubuntu DkmsStatus: i915-4.6.3-4.4.0, 1, 4.4.0-75-generic, x86_64: installed GraphicsCard: Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Dell Haswell-ULT Integrated Graphics Controller [1028:05e9] InstallationDate: Installed on 2017-04-25 (0 days ago) InstallationMedia: Ubuntu 14.04.5 LTS "Trusty Tahr" - Release amd64 (20160803) MachineType: Dell Inc. Inspiron 3537 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.25-040425-generic root=UUID=3914e6d5-5c87-4816-8043-776ef4184d29 ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: Upgraded to xenial on 2017-04-25 (0 days ago) dmi.bios.date: 04/30/2014 dmi.bios.vendor: Dell Inc. dmi.bios.version: A08 dmi.board.name: 03JPPR dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: A08 dmi.modalias: dmi:bvnDellInc.:bvrA08:bd04/30/2014:svnDellInc.:pnInspiron3537:pvrA08:rvnDellInc.:rn03JPPR:rvrA00:cvnDellInc.:ct8:cvrA08: dmi.product.name: Inspiron 3537 dmi.product.version: A08 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.12.2+16.04.20160823-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.70-1~ubuntu16.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 12.0.6-0ubuntu0.16.04.1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 12.0.6-0ubuntu0.16.04.1 version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-0ubuntu0.2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1.2 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2 xserver.bootTime: Tue Apr 25 21:37:24 2017 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 17900 vendor AUO xserver.version: 2:1.18.4-0ubuntu0.2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1686189/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
