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[Bug 1383997] Re: [Dell Vostro 5470] No HDMI audio with 14.04


Hi Po-Hsu,

So Timo tested and confirmed the bug too. And also that using

options snd-hda-intel power_save_controller=N

...in /etc/modprobe.d/alsa-base.conf also fixes the issue, and is less
invasive than jackpoll_ms=500. The question is if using the above
power_save_controller change causes worse battery life? If it does not,
maybe we could deploy it for everyone.

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  [Dell Vostro 5470] No HDMI audio with 14.04

Status in HWE Next Project:
Status in “linux” package in Ubuntu:

Bug description:
  CID: 201307-14037 Dell Vostro 5470

  There is no HDMI audio output option available when you connect the
  HDMI monitor (with speaker) to this system.

  Verified with cold plug, still no luck.

  However, HDMI audio could be detected with cold plug on 12.04.4 (3.11
  kernel) stock Ubuntu, tested with LiveUSB


  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-37-generic 3.13.0-37.64
  ProcVersionSignature: Ubuntu 3.13.0-37.64-generic
  Uname: Linux 3.13.0-37-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.5
  Architecture: amd64
   /dev/snd/controlC0:  ubuntu     1589 F.... pulseaudio
   /dev/snd/controlC1:  ubuntu     1589 F.... pulseaudio
   country TW:
   	(2402 - 2472 @ 40), (3, 27)
   	(5270 - 5330 @ 40), (3, 17), DFS
   	(5735 - 5815 @ 40), (3, 30)
  CurrentDesktop: Unity
  Date: Tue Oct 21 22:44:45 2014
  HibernationDevice: RESUME=UUID=420e55c0-b179-44d6-93d7-82393cdeec68
  InstallationDate: Installed on 2014-10-21 (0 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: Dell Inc. Vostro 5470
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-37-generic.efi.signed root=UUID=a975e1af-1e52-4f17-8e69-190b4dc36b48 ro quiet splash
   linux-restricted-modules-3.13.0-37-generic N/A
   linux-backports-modules-3.13.0-37-generic  N/A
   linux-firmware                             1.127.7
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/23/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A01
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: White Tip Mountain
  dmi.board.vendor: Intel Corp.
  dmi.board.version: FAB3
  dmi.chassis.asset.tag: Asset Tag
  dmi.chassis.type: 9
  dmi.chassis.vendor: Intel Corporation
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnDellInc.:bvrA01:bd08/23/2013:svnDellInc.:pnVostro5470:pvr:rvnIntelCorp.:rnWhiteTipMountain:rvrFAB3:cvnIntelCorporation:ct9:cvr0.1:
  dmi.product.name: Vostro 5470
  dmi.sys.vendor: Dell Inc.

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