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[Launchpad Bug Tracker <938631@xxxxxxxxxxxxxxxxxx>]

[Expired for linux (Ubuntu) because there has been no activity for 60
days.]

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

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https://bugs.launchpad.net/bugs/938631

Title:
  Duplicate ACPI video bus devices for the same VGA controller

Status in “linux” package in Ubuntu:
  Expired

Bug description:
  $ dmesg | grep -i vga
  [    1.142742] vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none
  [    1.142749] vgaarb: loaded
  [    1.142750] vgaarb: bridge control possible 0000:00:02.0
  [    2.084423] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
  [    4.117460] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work.
  [    4.117465] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work.
  [    4.117470] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work.
  [    4.117475] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work.
  [    4.117488] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work.
  [    4.117492] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work.
  [    4.117497] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work.

  
  NOTEBOOK

  VAIO VPCZ2
  --- 
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu7
  Architecture: i386
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: ALC275 Analog [ALC275 Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  paulo      3351 F.... pulseaudio
   /dev/snd/controlC0:  paulo      3351 F.... pulseaudio
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xd7400000 irq 68'
     Mixer name	: 'Intel CougarPoint HDMI'
     Components	: 'HDA:10ec0275,104d5600,00100005 HDA:80862805,104d5600,00100000'
     Controls      : 20
     Simple ctrls  : 9
  Card1.Amixer.info:
   Card hw:1 'Generic'/'HD-Audio Generic at 0xc0220000 irq 69'
     Mixer name	: 'ATI R6xx HDMI'
     Components	: 'HDA:1002aa01,00aa0100,00100200'
     Controls      : 6
     Simple ctrls  : 1
  Card1.Amixer.values:
   Simple mixer control 'IEC958',0
     Capabilities: pswitch pswitch-joined penum
     Playback channels: Mono
     Mono: Playback [on]
  DistroRelease: Ubuntu 12.04
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=f91b0650-605c-4170-9b2b-2c52adf9a16d
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
  MachineType: Sony Corporation VPCZ215GB
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-23-generic-pae root=UUID=2d393a94-bd1c-45bb-8c00-6934e9412628 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.2.0-23.36-generic-pae 3.2.14
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-23-generic-pae N/A
   linux-backports-modules-3.2.0-23-generic-pae  N/A
   linux-firmware                                1.79
  SourcePackage: linux
  StagingDrivers: rts_pstor mei
  Tags:  precise staging precise staging
  Uname: Linux 3.2.0-23-generic-pae i686
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers
  dmi.bios.date: 06/16/2011
  dmi.bios.vendor: INSYDE
  dmi.bios.version: R0170H5
  dmi.board.asset.tag: N/A
  dmi.board.name: VAIO
  dmi.board.vendor: Sony Corporation
  dmi.board.version: N/A
  dmi.chassis.asset.tag: N/A
  dmi.chassis.type: 10
  dmi.chassis.vendor: Sony Corporation
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnINSYDE:bvrR0170H5:bd06/16/2011:svnSonyCorporation:pnVPCZ215GB:pvrJ004JQGY:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:
  dmi.product.name: VPCZ215GB
  dmi.product.version: J004JQGY
  dmi.sys.vendor: Sony Corporation

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