** Changed in: hwe-next
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1714178
Title:
Triple 4K monitor display failed (modesetting driver limited to
8192x8192)
Status in DRI:
Fix Released
Status in HWE Next:
Fix Released
Status in X.Org X server:
Unknown
Status in linux package in Ubuntu:
Triaged
Status in linux-oem-osp1 package in Ubuntu:
Fix Released
Status in mesa package in Ubuntu:
Fix Released
Status in xorg-server package in Ubuntu:
Invalid
Status in linux source package in Bionic:
Confirmed
Status in linux-oem-osp1 source package in Bionic:
Fix Released
Status in mesa source package in Bionic:
Fix Released
Status in xorg-server source package in Bionic:
Invalid
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
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