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[Tudor Holton <1477859@xxxxxxxxxxxxxxxxxx>]

Mainline kernel 4.1.3-040103 sees the rt286 device appear.  However,
there is no actual sound. :-(

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https://bugs.launchpad.net/bugs/1477859

Title:
  Onboard Audio not working on Dell Venue 11 Pro 7140

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  No input or output devices appear in Sound Settings unless HDMI is
  plugged in.  So the audio card is working but not detecting the
  onboard audio inputs or outputs for some reason.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-generic 3.19.0.23.22
  ProcVersionSignature: Ubuntu 3.19.0-23.24-generic 3.19.8-ckt2
  Uname: Linux 3.19.0-23-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  tudor      1774 F.... pulseaudio
  Date: Fri Jul 24 17:27:39 2015
  HibernationDevice: RESUME=UUID=3acb1340-1be5-453c-a918-25f6b6ff404e
  InstallationDate: Installed on 2015-07-06 (17 days ago)
  InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  MachineType: Dell Inc. Venue 11 Pro 7140
  ProcEnviron:
   LANGUAGE=en_AU:en
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_AU.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-23-generic root=UUID=f0dc97e1-7d1c-4d05-a7d8-3cfc8551bdc4 ro quiet splash i915.i915_enable_rc6=1 "acpi_osi=!Windows 2013" vt.handoff=7
  PulseList:
   Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied
   No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-23-generic N/A
   linux-backports-modules-3.19.0-23-generic  N/A
   linux-firmware                             1.143.2
  SourcePackage: linux
  SystemImageInfo:
   current build number: 0
   device name: 
   channel: daily
   last update: Unknown
  UpgradeStatus: Upgraded to vivid on 2015-07-07 (17 days ago)
  dmi.bios.date: 06/30/2015
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A07
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA07:bd06/30/2015:svnDellInc.:pnVenue11Pro7140:pvr01:rvnDellInc.:rn:rvr:cvnDellInc.:ct8:cvr:
  dmi.product.name: Venue 11 Pro 7140
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

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