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[mjh <moonbug1970@xxxxxxxxx>]

Just tried 4.5.3-040503-generic from the mainline ppa repo http://kernel.ubuntu.com/~kernel-ppa/mainline
The behaviour is superficially the same as with 4.4 -- nomodeset is required to boot.

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https://bugs.launchpad.net/bugs/1580311

Title:
  Regression: drm / modesetting failure for i915

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Hi,

  Since updating to 16.04 with kernel vmlinuz-4.4.0-22-generic my laptop
  no longer completes the boot sequence under a normal boot scenario -
  the "loading initrd..." message is displayed, then, when the VGA
  modesetting usually kicks the display into a higher resolution, the
  screen blanks and the startup apparently halts. This is a regression
  from 4.2 series kernels. I can successfully bring up the system if I
  revert to 4.2.0-35, and also if I boot  4.4 with the failsafe setting
  (but then X is painfully slow, as its using software)

  Matt

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: xorg 1:7.7+13ubuntu3
  ProcVersionSignature: Ubuntu 4.2.0-35.40-generic 4.2.8-ckt5
  Uname: Linux 4.2.0-35-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
  CurrentDesktop: Unity
  Date: Tue May 10 20:29:56 2016
  DistUpgraded: 2016-05-04 00:10:55,503 DEBUG icon theme changed, re-reading
  DistroCodename: xenial
  DistroVariant: ubuntu
  DkmsStatus:
   virtualbox, 5.0.18, 4.2.0-35-generic, x86_64: installed
   virtualbox, 5.0.18, 4.4.0-21-generic, x86_64: installed
   virtualbox, 5.0.18, 4.4.0-22-generic, x86_64: installed
  ExtraDebuggingInterest: Yes, if not too technical
  GpuHangFrequency: Continuously
  GpuHangReproducibility: Yes, I can easily reproduce it
  GpuHangStarted: Immediately after installing this version of Ubuntu
  GraphicsCard:
   Intel Corporation Device [8086:22b1] (rev 21) (prog-if 00 [VGA controller])
     Subsystem: Dell Device [1028:06ac]
  InstallationDate: Installed on 2015-05-12 (364 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  MachineType: Dell Inc. Inspiron 15-3552
  PlymouthDebug: Error: [Errno 13] Permission denied: '/var/log/plymouth-debug.log'
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-35-generic.efi.signed root=/dev/mapper/ubuntu--15--vg-root ro plymouth:debug i8042.nopnp=1 vesafb.invalid=1 drm.debug=0xe
  SourcePackage: xorg
  Symptom: display
  Title: Xorg freeze
  UpgradeStatus: Upgraded to xenial on 2016-05-03 (6 days ago)
  dmi.bios.date: 11/17/2015
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 4.0.3
  dmi.board.name: 0CP33T
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: Not Specified
  dmi.modalias: dmi:bvnDellInc.:bvr4.0.3:bd11/17/2015:svnDellInc.:pnInspiron15-3552:pvr4.0.3:rvnDellInc.:rn0CP33T:rvrA00:cvnDellInc.:ct8:cvrNotSpecified:
  dmi.product.name: Inspiron 15-3552
  dmi.product.version: 4.0.3
  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: Tue May 10 12:26:45 2016
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                5578 
   vendor                                     CMN
  xserver.version: 2:1.18.3-1ubuntu2

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