-- GitLab Migration Automatic Message -- This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.
You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/xorg/xserver/issues/45. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1714178 Title: Triple 4K monitor display failed (modesetting driver limited to 8192x8192) Status in X.Org X server: Unknown Status in linux package in Ubuntu: Triaged Status in mesa package in Ubuntu: Fix Released Status in xorg-server package in Ubuntu: Triaged Status in linux source package in Bionic: Confirmed Status in mesa source package in Bionic: Confirmed Status in xorg-server source package in Bionic: Confirmed Bug description: Title: Triple monitor display failed with Dell Dock (HiDPI) (modesetting) Summary: Triple monitor display failed with Dell Dock (HiDPI) (modesetting) Steps: 1. a laptop with Built-in 4K LCD 2. Cold boot system with Dell Dock connected 3. Connect a 4K monitor to Dock 4. Connect 2nd 4K monitor to Dock 5. Go to [All Settings]=>[Displays] to have the following configuration. Resolution: 4kx2k@60Hz (one Built-in LCD + two external monitors) Mirror displays: disable Expected results: Triple monitor display should works without issues Actual results: Triple monitor display failed with Dell Dock Additional information: 1. Linux distribution: Ubuntu 16.04+modesetting, 16.04.3, and 17.04 2. Laptop: Dell Precision 5520 3. Dell Business Thunderbolt Dock - TB16 https://goo.gl/vFDjpi WORKAROUND (UBUNTU 18.04+): Log in to "Ubuntu on Wayland" instead of "Ubuntu". --- .tmp.unity_support_test.0: ApportVersion: 2.20.1-0ubuntu2.10 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 DistUpgraded: Fresh install DistributionChannelDescriptor: # This is a distribution channel descriptor # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor canonical-oem-somerville-xenial-amd64-20160624-2 DistroCodename: xenial DistroRelease: Ubuntu 16.04 DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation Device [8086:591d] (rev 04) (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:07bf] Subsystem: Dell Device [1028:07bf] InstallationDate: Installed on 2017-08-29 (2 days ago) InstallationMedia: Ubuntu 16.04 "Xenial" - Build amd64 LIVE Binary 20160624-10:47 MachineType: Dell Inc. Precision 5520 Package: xorg-server (not installed) ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.11.0-14-generic.efi.signed root=UUID=b79ae801-0652-4785-beaf-e8387d798948 ro acpi_rev_override quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 4.11.0-14.20~16.04.1-generic 4.11.12 Tags: xenial ubuntu compiz-0.9 Uname: Linux 4.11.0-14-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 05/08/2017 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.3.3 dmi.board.vendor: Dell Inc. dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.3.3:bd05/08/2017:svnDellInc.:pnPrecision5520:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct10:cvr: dmi.product.name: Precision 5520 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 2.4.76-1~ubuntu16.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 17.0.7-0ubuntu0.16.04.1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 17.0.7-0ubuntu0.16.04.1 version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-0ubuntu0.3 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 To manage notifications about this bug go to: https://bugs.launchpad.net/xorg-server/+bug/1714178/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
