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[Gnu <dasgnu@xxxxxxxxx>]

Thanks Scott. I can confirm your solution. Blacklisting of dw_dmac
results in reliable booting and shutdown.

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

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https://bugs.launchpad.net/bugs/1320622

Title:
  [HP Pavilion 11-n071eg x360 PC] Booting unreliably and does not switch
  off during shutdown

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  Boot hangs often.  I tried with several kernel parameters (nomodeset
  or acpi=force, boot=...) but nothing helps.

  Shutdown of the HP x360 from ubuntu 14.04. is also not possible.
  Hardware is never switched off after shutdown and I need to hit the
  power button for 4+ seconds.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-24-generic 3.13.0-24.47
  ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  gnu        3848 F.... pulseaudio
                        gnu        3947 F.... pulseaudio
  CurrentDesktop: KDE
  Date: Sun May 18 13:34:07 2014
  InstallationDate: Installed on 2014-05-06 (11 days ago)
  InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.1)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 003: ID 1a40:0101 Terminus Technology Inc. 4-Port HUB
   Bus 001 Device 002: ID 05c8:036e Cheng Uei Precision Industry Co., Ltd (Foxlink) 
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion 11 x360 PC
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-24-generic.efi.signed root=UUID=1e7f46b1-ae3a-4e4e-af53-965ff9464642 ro
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-24-generic N/A
   linux-backports-modules-3.13.0-24-generic  N/A
   linux-firmware                             1.127.2
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/24/2014
  dmi.bios.vendor: Insyde
  dmi.bios.version: F.06
  dmi.board.asset.tag: Type2 - Board Asset Tag
  dmi.board.name: 2209
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 57.24
  dmi.chassis.asset.tag: Chassis Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnInsyde:bvrF.06:bd03/24/2014:svnHewlett-Packard:pnHPPavilion11x360PC:pvr0977100000405F00010420180:rvnHewlett-Packard:rn2209:rvr57.24:cvnHewlett-Packard:ct10:cvrChassisVersion:
  dmi.product.name: HP Pavilion 11 x360 PC
  dmi.product.version: 0977100000405F00010420180
  dmi.sys.vendor: Hewlett-Packard

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