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[eolien <mrnfake@xxxxxxxxx>]

I understood something today :
When i pass kernel option "reboot=bios", on all dell machine, only "reboot" command works

Ctrl+alt+suppr, and graphic reboot hangs

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https://bugs.launchpad.net/bugs/1304246

Title:
  Reboot hangs with Dell computers on 64 bits

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  On xubuntu 12.04.3 64 bits, with Dell computer (7010 and some other
  optiplex),  reboot  hangs and display terminal :

  acpid exiting
  running unnatend : ...

  I had same problem on 32 bits 12.04, but solved by adding "acpi=force reboot=pci" in /etc/default/grub
  Here, on 64 bits, tried that and didn't work.

  I also tried every other reboot parameter, without success.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.2.0-54-generic 3.2.0-54.82
  ProcVersionSignature: Ubuntu 3.2.0-54.82-generic 3.2.50
  Uname: Linux 3.2.0-54-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  AplayDevices:
   **** List of PLAYBACK Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: HDA Generic [HDA Generic]
     Subdevices: 0/1
     Subdevice #0: subdevice #0
  ApportVersion: 2.0.1-0ubuntu17.6
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: HDA Generic [HDA Generic]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  speech-dispatcher   1289 F.... pulseaudio
                        root       2212 F.... xfce4-volumed
   /dev/snd/pcmC0D0p:   speech-dispatcher   1289 F...m pulseaudio
   /dev/snd/timer:      speech-dispatcher   1289 f.... pulseaudio
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0xfebf0000 irq 43'
     Mixer name	: 'Generic 1af4 ID 21'
     Components	: 'HDA:1af40021,1af40021,00100101'
     Controls      : 2
     Simple ctrls  : 2
  Date: Tue Apr  8 10:00:21 2014
  HibernationDevice: RESUME=UUID=2b0136a6-76ae-42a5-a166-a2e6af4c0e17
  InstallationMedia: Xubuntu 12.04.3 LTS "Precise Pangolin" - Release amd64 (20130820)
  IwConfig:
   lo        no wireless extensions.
   
   eth0      no wireless extensions.
  Lsusb:
   Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd
  MachineType: Bochs Bochs
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 EFI VGA
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-54-generic root=UUID=1be3fd89-b18b-4f55-ab8f-1f9e26e57c01 ro quiet splash acpi=force reboot=b vt.handoff=7
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-54-generic N/A
   linux-backports-modules-3.2.0-54-generic  N/A
   linux-firmware                            1.79.9
  RfKill:
   
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/01/2011
  dmi.bios.vendor: Bochs
  dmi.bios.version: Bochs
  dmi.chassis.type: 1
  dmi.chassis.vendor: Bochs
  dmi.modalias: dmi:bvnBochs:bvrBochs:bd01/01/2011:svnBochs:pnBochs:pvr:cvnBochs:ct1:cvr:
  dmi.product.name: Bochs
  dmi.sys.vendor: Bochs

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