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[Ian Booth <ian.booth@xxxxxxxxxxxxx>]

The only kernel I can get to work at all in terms of allowing lightdm to
run and me to log in is 3.19.x

All Ubuntu kernels I have tried
- 4.2.0-23
- 4.3.0-6
- 4.4.0-0

cause boot to lock up. It's not just lightdm that fails. You can't even
Alt-Shift F1 to a console.

The only 4.x kernel that works (which also allows networking) in
mainline 4.4.

** Description changed:

- Booting with intel graphics enabled results in a lockup loading lightdm
- or logging in results in the greeter screen appearing again. The laptop
- has a Nvidia GTX730 graphics card which can be switched off via
- bumblebee or prime.
+ Booting with intel graphics enabled results in a lockup loading lightdm or logging in results in the greeter screen appearing again. The laptop has a Nvidia GTX730 graphics card which can be switched off via bumblebee or prime.
+ --- 
+ ApportVersion: 2.19.1-0ubuntu5
+ Architecture: amd64
+ AudioDevicesInUse:
+  USER        PID ACCESS COMMAND
+  /dev/snd/controlC0:  ian        2045 F.... pulseaudio
+ CurrentDesktop: Unity
+ DistroRelease: Ubuntu 15.10
+ HibernationDevice: RESUME=UUID=df036c01-8f22-4d8f-ad55-6add4f99f5f4
+ MachineType: Notebook P65_P67RGRERA
+ NonfreeKernelModules: nvidia_modeset nvidia
+ Package: linux (not installed)
+ ProcFB: 0 inteldrmfb
+ ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-43-generic root=UUID=2077d068-d7ee-4407-89e1-7d2b884173de ro quiet splash
+ ProcVersionSignature: Ubuntu 3.19.0-43.49-generic 3.19.8-ckt10
+ RelatedPackageVersions:
+  linux-restricted-modules-3.19.0-43-generic N/A
+  linux-backports-modules-3.19.0-43-generic  N/A
+  linux-firmware                             1.155
+ Tags:  wily
+ UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
+ Uname: Linux 3.19.0-43-generic x86_64
+ UpgradeStatus: No upgrade log present (probably fresh install)
+ UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
+ _MarkForUpload: True
+ dmi.bios.date: 11/20/2015
+ dmi.bios.vendor: American Megatrends Inc.
+ dmi.bios.version: 1.05.10
+ dmi.board.asset.tag: Tag 12345
+ dmi.board.name: P65_P67RGRERA
+ dmi.board.vendor: Notebook
+ dmi.board.version: Not Applicable
+ dmi.chassis.asset.tag: No Asset Tag
+ dmi.chassis.type: 10
+ dmi.chassis.vendor: Notebook
+ dmi.chassis.version: N/A
+ dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.05.10:bd11/20/2015:svnNotebook:pnP65_P67RGRERA:pvrNotApplicable:rvnNotebook:rnP65_P67RGRERA:rvrNotApplicable:cvnNotebook:ct10:cvrN/A:
+ dmi.product.name: P65_P67RGRERA
+ dmi.product.version: Not Applicable
+ dmi.sys.vendor: Notebook

-- 
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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1533221

Title:
  Booting with intel graphics enabled results in a lockup

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Booting with intel graphics enabled results in a lockup loading lightdm or logging in results in the greeter screen appearing again. The laptop has a Nvidia GTX730 graphics card which can be switched off via bumblebee or prime.
  --- 
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ian        2045 F.... pulseaudio
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 15.10
  HibernationDevice: RESUME=UUID=df036c01-8f22-4d8f-ad55-6add4f99f5f4
  MachineType: Notebook P65_P67RGRERA
  NonfreeKernelModules: nvidia_modeset nvidia
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-43-generic root=UUID=2077d068-d7ee-4407-89e1-7d2b884173de ro quiet splash
  ProcVersionSignature: Ubuntu 3.19.0-43.49-generic 3.19.8-ckt10
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-43-generic N/A
   linux-backports-modules-3.19.0-43-generic  N/A
   linux-firmware                             1.155
  Tags:  wily
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  Uname: Linux 3.19.0-43-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 11/20/2015
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1.05.10
  dmi.board.asset.tag: Tag 12345
  dmi.board.name: P65_P67RGRERA
  dmi.board.vendor: Notebook
  dmi.board.version: Not Applicable
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Notebook
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.05.10:bd11/20/2015:svnNotebook:pnP65_P67RGRERA:pvrNotApplicable:rvnNotebook:rnP65_P67RGRERA:rvrNotApplicable:cvnNotebook:ct10:cvrN/A:
  dmi.product.name: P65_P67RGRERA
  dmi.product.version: Not Applicable
  dmi.sys.vendor: Notebook

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