Public bug reported:

I have two monitors connected to my Dell XPS 13 via the USB-C output.

For the majority of the time, it works fine. Occasionally, one or both
of the images on the displays jump to the right, so that the right few
inches appear on the left.

To rectify the problem, I run the 'displays' app, move one of the
displays a little, click 'apply', and then, instead of 'keep settings',
I 'revert' them to their original, and then everything is fine for a
while.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu7.1
ProcVersionSignature: Ubuntu 4.15.0-36.39-generic 4.15.18
Uname: Linux 4.15.0-36-generic x86_64
.tmp.unity_support_test.0:
 
ApportVersion: 2.20.9-0ubuntu7.4
Architecture: amd64
CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Mon Oct 22 15:17:27 2018
DistUpgraded: 2018-05-23 09:09:55,083 DEBUG icon theme changed, re-reading
DistroCodename: bionic
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation HD Graphics 620 [8086:5916] (rev 02) (prog-if 00 [VGA 
controller])
   Subsystem: Dell HD Graphics 620 [1028:075b]
InstallationDate: Installed on 2017-10-11 (376 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
MachineType: Dell Inc. XPS 13 9360
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-36-generic 
root=UUID=15ace73f-6b30-4444-a755-85264a11ae1e ro quiet splash vt.handoff=1
SourcePackage: xorg
UpgradeStatus: Upgraded to bionic on 2018-05-23 (152 days ago)
dmi.bios.date: 05/21/2018
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 2.7.1
dmi.board.name: 05JK94
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: 
dmi:bvnDellInc.:bvr2.7.1:bd05/21/2018:svnDellInc.:pnXPS139360:pvr:rvnDellInc.:rn05JK94:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.family: XPS
dmi.product.name: XPS 13 9360
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.13.1+18.04.20180302-0ubuntu1
version.libdrm2: libdrm2 2.4.91-2
version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.5-0ubuntu0~18.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.5-0ubuntu0~18.04.1
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A
xserver.bootTime: Tue Oct 31 11:01:05 2017
xserver.configfile: default
xserver.errors:
 
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id                                5193 
 vendor                                     SHP
xserver.version: 2:1.19.3-1ubuntu1.3

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic ubuntu

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You received this bug notification because you are a member of Desktop
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https://bugs.launchpad.net/bugs/1799232

Title:
  my displays jump to the right occasionally

Status in xorg package in Ubuntu:
  New

Bug description:
  I have two monitors connected to my Dell XPS 13 via the USB-C output.

  For the majority of the time, it works fine. Occasionally, one or both
  of the images on the displays jump to the right, so that the right few
  inches appear on the left.

  To rectify the problem, I run the 'displays' app, move one of the
  displays a little, click 'apply', and then, instead of 'keep
  settings', I 'revert' them to their original, and then everything is
  fine for a while.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: xorg 1:7.7+19ubuntu7.1
  ProcVersionSignature: Ubuntu 4.15.0-36.39-generic 4.15.18
  Uname: Linux 4.15.0-36-generic x86_64
  .tmp.unity_support_test.0:
   
  ApportVersion: 2.20.9-0ubuntu7.4
  Architecture: amd64
  CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CurrentDesktop: ubuntu:GNOME
  Date: Mon Oct 22 15:17:27 2018
  DistUpgraded: 2018-05-23 09:09:55,083 DEBUG icon theme changed, re-reading
  DistroCodename: bionic
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation HD Graphics 620 [8086:5916] (rev 02) (prog-if 00 [VGA 
controller])
     Subsystem: Dell HD Graphics 620 [1028:075b]
  InstallationDate: Installed on 2017-10-11 (376 days ago)
  InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 
(20170801)
  MachineType: Dell Inc. XPS 13 9360
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-36-generic 
root=UUID=15ace73f-6b30-4444-a755-85264a11ae1e ro quiet splash vt.handoff=1
  SourcePackage: xorg
  UpgradeStatus: Upgraded to bionic on 2018-05-23 (152 days ago)
  dmi.bios.date: 05/21/2018
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 2.7.1
  dmi.board.name: 05JK94
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvr2.7.1:bd05/21/2018:svnDellInc.:pnXPS139360:pvr:rvnDellInc.:rn05JK94:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.family: XPS
  dmi.product.name: XPS 13 9360
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz 1:0.9.13.1+18.04.20180302-0ubuntu1
  version.libdrm2: libdrm2 2.4.91-2
  version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.5-0ubuntu0~18.04.1
  version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.5-0ubuntu0~18.04.1
  version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
  version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A
  xserver.bootTime: Tue Oct 31 11:01:05 2017
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                5193 
   vendor                                     SHP
  xserver.version: 2:1.19.3-1ubuntu1.3

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