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[Dawid Wróbel <me@xxxxxxxxxxxxxxx>]

Public bug reported:

I resumed my DELL XPS 9350 today and connected external UHD display over
USB Type-C, which caused compiz to die and a number of warnings/errors
in dmesg, as well as garbling the screen on the built-in display.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-21-generic 4.4.0-21.37
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  cromo      2664 F.... pulseaudio
 /dev/snd/controlC0:  cromo      2664 F.... pulseaudio
CurrentDesktop: Unity
Date: Fri Apr 22 20:52:53 2016
HibernationDevice: RESUME=UUID=3cd6beac-9b2b-4af8-9004-fdec2b01f2df
InstallationDate: Installed on 2013-04-24 (1094 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130423.1)
MachineType: Dell Inc. XPS 13 9350
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=50ed3eed-05f6-4dce-b5d6-86a6519d89c1 ro quiet splash i8042.nopnp vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-21-generic N/A
 linux-backports-modules-4.4.0-21-generic  N/A
 linux-firmware                            1.157
SourcePackage: linux
UpgradeStatus: Upgraded to xenial on 2016-03-23 (30 days ago)
dmi.bios.date: 01/08/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.2.3
dmi.board.name: 0VM5NC
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.2.3:bd01/08/2016:svnDellInc.:pnXPS139350:pvr:rvnDellInc.:rn0VM5NC:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: XPS 13 9350
dmi.sys.vendor: Dell Inc.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Confirmed


** Tags: amd64 apport-bug xenial

-- 
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https://bugs.launchpad.net/bugs/1573863

Title:
  Screen garbled, dmesg errors and compiz segfault after connecting
  external display over USB-C

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  I resumed my DELL XPS 9350 today and connected external UHD display
  over USB Type-C, which caused compiz to die and a number of
  warnings/errors in dmesg, as well as garbling the screen on the built-
  in display.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-21-generic 4.4.0-21.37
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  Uname: Linux 4.4.0-21-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  cromo      2664 F.... pulseaudio
   /dev/snd/controlC0:  cromo      2664 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Fri Apr 22 20:52:53 2016
  HibernationDevice: RESUME=UUID=3cd6beac-9b2b-4af8-9004-fdec2b01f2df
  InstallationDate: Installed on 2013-04-24 (1094 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130423.1)
  MachineType: Dell Inc. XPS 13 9350
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=50ed3eed-05f6-4dce-b5d6-86a6519d89c1 ro quiet splash i8042.nopnp vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-21-generic N/A
   linux-backports-modules-4.4.0-21-generic  N/A
   linux-firmware                            1.157
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-03-23 (30 days ago)
  dmi.bios.date: 01/08/2016
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.2.3
  dmi.board.name: 0VM5NC
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvr1.2.3:bd01/08/2016:svnDellInc.:pnXPS139350:pvr:rvnDellInc.:rn0VM5NC:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: XPS 13 9350
  dmi.sys.vendor: Dell Inc.

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