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[Soren Mogensen <1401943@xxxxxxxxxxxxxxxxxx>]

Hi Christopher, thanks for getting back to me.

I have updated the BIOS - the output from 'sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date' is:
2104
08/13/2013

Apart from making it hard to get into the grub menu, the BIOS upgrade
didn't seem to change much - I still end up with a kernel panic for
kernel 3.16.0-28. HOWEVER, found that if I boot into 3.16.0-28 recovery
mode, and then resume normal boot, then this kernel panic does not occur
(however, graphics resolution is severely reduced).

Attached is a new screenshot of the text output during boot when hung
(this time after BIOS upgrade).

** Attachment added: "IMG_20141213_094049.jpg"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1401943/+attachment/4280153/+files/IMG_20141213_094049.jpg

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

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https://bugs.launchpad.net/bugs/1401943

Title:
  Kernel upgrade to 3.16.0-28 causes boot hang on my system

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Under Ubuntu 14.10, I installed the latest kernel 3.16.0-28 and after
  reboot my system won't boot - result is blank screen. No console from
  ctrl+alt+fX.

  Re-installed from 14.10 install media, choosing do-not-install-
  updates, and found that strangely this still resulted in 3.16.0-28
  being installed - and thus same boot hang.

  System boots fine with earlier kernel version (3.16.0-23).

  I tried the 'ubuntu-bug linux' console command to report a bug with
  the kernel - however, this gathers information about the running
  (working) kernel 3.16.0-23 rather than the broken 3.16.0-28.

  Will attach screenshot of output of text error during boot.
  --- 
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  soren      2355 F.... pulseaudio
   /dev/snd/controlC1:  soren      2355 F.... pulseaudio
  CurrentDesktop: XFCE
  DistroRelease: Ubuntu 14.10
  HibernationDevice: RESUME=UUID=0e328329-6f3c-4967-a46e-9f695c6dd970
  InstallationDate: Installed on 2014-12-12 (0 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  IwConfig:
   eth0      no wireless extensions.
   
   eth1      no wireless extensions.
   
   lo        no wireless extensions.
  MachineType: System manufacturer System Product Name
  Package: linux (not installed)
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-23-generic root=UUID=3347210c-8dee-4b0b-a67c-fb900809ae6f ro quiet splash
  ProcVersionSignature: Ubuntu 3.16.0-23.31-generic 3.16.4
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-23-generic N/A
   linux-backports-modules-3.16.0-23-generic  N/A
   linux-firmware                             1.138
  RfKill:
   
  Tags:  utopic
  Uname: Linux 3.16.0-23-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 02/24/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 0801
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: P8Z77-V DELUXE
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: Rev 1.xx
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0801:bd02/24/2012:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnP8Z77-VDELUXE:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer

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