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[patrick <patj@xxxxxxx>]

** Tags added: kernel-bug-exists-upstream

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https://bugs.launchpad.net/bugs/1360731

Title:
  Acer Aspire V3-111P fails to boot with ACPI on (including acpi=ht)

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Boot hangs if acpi is not entirely disabled on Acer Aspire V3-111P.
  Bios 1.05, newer (undocumented) version 1.11 untested so far.
  This hang does not occur on Ubuntu 12.04 LTS, but does on 14.04(.1) LTS, unless using "acpi=off".

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-34-generic 3.13.0-34.60
  ProcVersionSignature: Ubuntu 3.13.0-34.60-generic 3.13.11.4
  Uname: Linux 3.13.0-34-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  iheino     1777 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sun Aug 24 04:20:31 2014
  HibernationDevice: RESUME=UUID=cd1b13ba-5c85-4c64-bf69-aefe3e92c2dc
  InstallationDate: Installed on 2014-08-21 (2 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: Acer Aspire V3-111P
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-34-generic root=UUID=5a0c649c-474a-4809-851e-70f69f035055 ro quiet splash acpi=off
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-34-generic N/A
   linux-backports-modules-3.13.0-34-generic  N/A
   linux-firmware                             1.127.5
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/11/2014
  dmi.bios.vendor: Insyde Corp.
  dmi.bios.version: V1.05
  dmi.board.asset.tag: Type2 - Board Asset Tag
  dmi.board.name: Roxy
  dmi.board.vendor: Acer
  dmi.board.version: Type2 - A01 Board Version
  dmi.chassis.type: 10
  dmi.chassis.vendor: Chassis Manufacturer
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.05:bd04/11/2014:svnAcer:pnAspireV3-111P:pvrV1.05:rvnAcer:rnRoxy:rvrType2-A01BoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion:
  dmi.product.name: Aspire V3-111P
  dmi.product.version: V1.05
  dmi.sys.vendor: Acer

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