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[Bug 1190890] Re: AMD Radeon HD 7640G [1002:9903] [Dell Inspiron 5425] No HDMI audio output with radeon driver


Po-Hsu Lin, as per the failures in your https://launchpadlibrarian.net/142395964/fwts_results.log , and :
[ 0.250519] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored :
[ 0.329418] [Firmware Bug]: ACPI: No _BQC method, cannot determine initial brightness
[ 0.329615] [Firmware Bug]: ACPI: No _BQC method, cannot determine initial brightness
[ 0.929298] [Firmware Bug]: powernow-k8: No compatible ACPI _PSS objects found.
[ 0.929298] [Firmware Bug]: powernow-k8: Try again with latest BIOS.

Hence, as per http://www.dell.com/support/drivers/us/en/19/Product/inspiron-5425 an update is available for your BIOS (A09). If you update to this following https://help.ubuntu.com/community/BiosUpdate , does it change anything? If it doesn't, could you please both specify what happened, and just provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date

Thank you for your understanding.

** Summary changed:

- AMD Radeon HD 7640G[1002:9903] No HDMI audio output with radeon driver
+ AMD Radeon HD 7640G [1002:9903] [Dell Inspiron 5425] No HDMI audio output with radeon driver

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

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  AMD Radeon HD 7640G [1002:9903] [Dell Inspiron 5425] No HDMI audio
  output with radeon driver

Status in “linux” package in Ubuntu:

Bug description:
  CID: 201206-11418 Dell Inspiron N5425

  HDMI video output works fine on this system, but no HDMI audio output.
  Tried with adding "radeon.audio=1" to GRUB_CMDLINE_LINUX_DEFAULT into /etc/default/grub as indicated in #864735, but this problem still exist after finishing those steps.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.5.0-34-generic 3.5.0-34.55~precise1
  ProcVersionSignature: Ubuntu 3.5.0-34.55~precise1-generic
  Uname: Linux 3.5.0-34-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.25.
  ApportVersion: 2.0.1-0ubuntu17.3
  Architecture: amd64
   **** List of CAPTURE Hardware Devices ****
   card 1: Generic [HD-Audio Generic], device 0: CONEXANT Analog [CONEXANT Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
   /dev/snd/controlC1:  ubuntu     1678 F.... pulseaudio
   /dev/snd/controlC0:  ubuntu     1678 F.... pulseaudio
   country TW:
   	(2402 - 2472 @ 40), (3, 27)
   	(5270 - 5330 @ 40), (3, 17), DFS
   	(5735 - 5815 @ 40), (3, 30)
   Card hw:0 'HDMI'/'HDA ATI HDMI at 0xfeb44000 irq 52'
     Mixer name	: 'ATI R6xx HDMI'
     Components	: 'HDA:1002aa01,00aa0100,00100300'
     Controls      : 6
     Simple ctrls  : 1
   Simple mixer control 'IEC958',0
     Capabilities: pswitch pswitch-joined penum
     Playback channels: Mono
     Mono: Playback [on]
   Card hw:1 'Generic'/'HD-Audio Generic at 0xfeb40000 irq 16'
     Mixer name	: 'Conexant CX20590'
     Components	: 'HDA:14f1506e,10280561,00100003'
     Controls      : 20
     Simple ctrls  : 10
  Date: Fri Jun 14 15:23:37 2013
  HibernationDevice: RESUME=UUID=770418a5-35a9-4a8e-b5e7-1773a925f90e
  InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130213)
  MachineType: Dell Inc. Inspiron 5425
  MarkForUpload: True
   PATH=(custom, no user)
   0 radeondrmfb
   1 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-34-generic root=UUID=9514e072-517d-4e5f-8d45-fd769b1a95c6 ro quiet splash radeon.audio=1 vt.handoff=7
   linux-restricted-modules-3.5.0-34-generic N/A
   linux-backports-modules-3.5.0-34-generic  N/A
   linux-firmware                            1.79.4
  SourcePackage: linux
  StagingDrivers: rts5139
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/30/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: X31
  dmi.board.name: Inspiron 5425
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A02
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: Not Specified
  dmi.modalias: dmi:bvnDellInc.:bvrX31:bd01/30/2013:svnDellInc.:pnInspiron5425:pvrNotSpecified:rvnDellInc.:rnInspiron5425:rvrA02:cvnDellInc.:ct8:cvrNotSpecified:
  dmi.product.name: Inspiron 5425
  dmi.product.version: Not Specified
  dmi.sys.vendor: Dell Inc.

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