Marcelo Fernandez, the next step is to fully commit bisect from kernel
3.13 to 4.4 in order to identify the last good kernel commit, followed
immediately by the first bad one. This will allow for a more expedited
analysis of the root cause of your issue. Could you please do this
following https://wiki.ubuntu.com/Kernel/KernelBisection ?

Please note, finding adjacent kernel versions is not fully commit
bisecting.

Also, the kernel release names are irrelevant for the purposes of
bisecting.

After the offending commit (not kernel version) has been identified,
then please mark this report Status New.

Thank you for your help.

** Changed in: xorg (Ubuntu)
       Status: Confirmed => Incomplete

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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/1579182

Title:
  [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure on
  pipe A

Status in xorg package in Ubuntu:
  Incomplete

Bug description:
  Ubuntu 16.04 upgraded from Ubuntu 14.04 on a Dell Inspiron 14z, w
  /Intel-ATI hybrid graphics (but DIS card is OFF through
  vgaswitcheroo).

  Just like bug no. #1525390 [1], Chrome shows some artifacts randomly
  and I have the same kernel trace but from 10 days ago (I use this
  system everyday and it didn't happened since then).

  [1] https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1525390

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: xorg 1:7.7+13ubuntu3
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  Uname: Linux 4.4.0-21-generic x86_64
  .tmp.unity_support_test.0:
   
  ApportVersion: 2.20.1-0ubuntu2
  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
  Date: Fri May  6 15:17:08 2016
  DistUpgraded: 2016-04-25 18:04:08,937 DEBUG Running PostInstallScript: 
'./xorg_fix_proprietary.py'
  DistroCodename: xenial
  DistroVariant: ubuntu
  DkmsStatus: vboxhost, 5.0.20, 4.4.0-21-generic, x86_64: installed
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] 
(rev 09) (prog-if 00 [VGA controller])
     Subsystem: Dell 3rd Gen Core processor Graphics Controller [1028:057f]
   Advanced Micro Devices, Inc. [AMD/ATI] Thames [Radeon HD 7550M/7570M/7650M] 
[1002:6841] (rev ff) (prog-if ff)
  InstallationDate: Installed on 2013-08-12 (997 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  LightdmDisplayLog:
   [dix] EventToCore: Not implemented yet 
   [dix] EventToCore: Not implemented yet
  MachineType: Dell Inc. Inspiron 5423
  ProcEnviron:
   LANGUAGE=es_AR:es
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=es_AR.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-21-generic 
root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
  SourcePackage: xorg
  UpgradeStatus: Upgraded to xenial on 2016-04-25 (10 days ago)
  dmi.bios.date: 05/18/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A13
  dmi.board.name: 05WDP7
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A13
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: Not Specified
  dmi.modalias: 
dmi:bvnDellInc.:bvrA13:bd05/18/2013:svnDellInc.:pnInspiron5423:pvrNotSpecified:rvnDellInc.:rn05WDP7:rvrA13:cvnDellInc.:ct8:cvrNotSpecified:
  dmi.product.name: Inspiron 5423
  dmi.product.version: Not Specified
  dmi.sys.vendor: Dell Inc.
  version.compiz: compiz 1:0.9.12.2+16.04.20160415-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.67-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2
  version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2
  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
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 
1:1.0.12-1build2
  xserver.bootTime: Fri May  6 09:34:55 2016
  xserver.configfile: default
  xserver.errors: RADEON(G0): [XvMC] Failed to initialize extension.
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                9020 
   vendor                                     AUO
  xserver.version: 2:1.18.3-1ubuntu2

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