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[Scott Moser <smoser@xxxxxxxxxx>]

just rebooted into 3.18.0-8-generic and verified that all three of the
items listed above are regressions between 3.18.0-8-generic and
3.18.0-9-generic.

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https://bugs.launchpad.net/bugs/1410921

Title:
  no sound devices, bad video resolution on laptop screen, no external
  monitors detected

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  sorry for the meta-bug here, but just upgraded from 
  linux-image-3.18.0-8-generic: /boot/vmlinuz-3.18.0-8-generic
  to
  linux-image-3.18.0-9-generic: /boot/vmlinuz-3.18.0-9-generic

  and now:
   a.) I don't seem to have an audio device ('settings -> sound' shows only 'Dummy Output')
   b.) my LCD screen is in 1280x800 resolution rather than the 1364x768 that i'd expect.
   c.) external monitor is not detected.

  xrandr shows:
  $ xrandr
  xrandr: Failed to get size of gamma for output default
  Screen 0: minimum 1280 x 800, current 1280 x 800, maximum 1280 x 800
  default connected primary 1280x800+0+0 0mm x 0mm
     1280x800       76.0*

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.18.0-9-generic 3.18.0-9.10
  ProcVersionSignature: Ubuntu 3.18.0-9.10-generic 3.18.2
  Uname: Linux 3.18.0-9-generic x86_64
  ApportVersion: 2.15.1-0ubuntu2
  Architecture: amd64
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  CurrentDesktop: Unity
  Date: Wed Jan 14 13:43:02 2015
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2015-01-02 (12 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20150101)
  IwConfig:
   eth0      no wireless extensions.
   
   lo        no wireless extensions.
   
   lxcbr0    no wireless extensions.
  MachineType: LENOVO 7417CTO
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.18.0-9-generic root=UUID=715c6da7-c111-4842-868b-7778623ead7c ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.18.0-9-generic N/A
   linux-backports-modules-3.18.0-9-generic  N/A
   linux-firmware                            1.140
  RfKill:
   
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/17/2012
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 7UET94WW (3.24 )
  dmi.board.name: 7417CTO
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr7UET94WW(3.24):bd10/17/2012:svnLENOVO:pn7417CTO:pvrThinkPadT400:rvnLENOVO:rn7417CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 7417CTO
  dmi.product.version: ThinkPad T400
  dmi.sys.vendor: LENOVO

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