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[Francois Thirioux <1453447@xxxxxxxxxxxxxxxxxx>]

apport information

** Attachment added: "CurrentDmesg.txt"
   https://bugs.launchpad.net/bugs/1453447/+attachment/4394630/+files/CurrentDmesg.txt

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Title:
  [Vivid] kernel 3.19.0-17 fails to show HDMI sound output

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  I plug in HDMI through a mini DP adapter.
  Thus I should see internal speakers and HDMI outputs in Gnome control center but I can only see internal speakers.

  It's clearly a kernel issue since switching back to 3.19.0-16 solves
  this bug. I did no kernel tweaks. TLP is installed though.

  uname -a
  Linux 3.19.0-17-generic #17-Ubuntu SMP Wed May 6 16:46:12 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

  lspci
  00:00.0 Host bridge: Intel Corporation Haswell-ULT DRAM Controller (rev 0b)
  00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 0b)
  00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev 0b)
  00:14.0 USB controller: Intel Corporation 8 Series USB xHCI HC (rev 04)
  00:16.0 Communication controller: Intel Corporation 8 Series HECI #0 (rev 04)
  00:19.0 Ethernet controller: Intel Corporation Ethernet Connection I218-LM (rev 04)
  00:1b.0 Audio device: Intel Corporation 8 Series HD Audio Controller (rev 04)
  00:1c.0 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 6 (rev e4)
  00:1c.1 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 3 (rev e4)
  00:1d.0 USB controller: Intel Corporation 8 Series USB EHCI #1 (rev 04)
  00:1f.0 ISA bridge: Intel Corporation 8 Series LPC Controller (rev 04)
  00:1f.2 SATA controller: Intel Corporation 8 Series SATA Controller 1 [AHCI mode] (rev 04)
  00:1f.3 SMBus: Intel Corporation 8 Series SMBus Controller (rev 04)
  03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83)
  --- 
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  ft         1770 F.... pulseaudio
  CurrentDesktop: GNOME
  DistroRelease: Ubuntu 15.04
  HibernationDevice: RESUME=UUID=54b265b9-4433-42d4-8d0f-fac028ee7030
  InstallationDate: Installed on 2014-03-05 (430 days ago)
  InstallationMedia: Ubuntu-GNOME 14.04 "Trusty Tahr" - Alpha amd64 (20140226)
  Lsusb:
   Bus 003 Device 002: ID 8087:8000 Intel Corp. 
   Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: LENOVO 20AQCTO1WW
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-17-generic.efi.signed root=UUID=b1cbc034-b66f-4f6c-9d61-507b8cb23ffe ro quiet
  ProcVersionSignature: Ubuntu 3.19.0-17.17-generic 3.19.6
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-17-generic N/A
   linux-backports-modules-3.19.0-17-generic  N/A
   linux-firmware                             1.143
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  Tags:  vivid
  Uname: Linux 3.19.0-17-generic x86_64
  UpgradeStatus: Upgraded to vivid on 2015-01-07 (121 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 03/09/2015
  dmi.bios.vendor: LENOVO
  dmi.bios.version: GJET83WW (2.33 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20AQCTO1WW
  dmi.board.vendor: LENOVO
  dmi.board.version: 0B98405 STD
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrGJET83WW(2.33):bd03/09/2015:svnLENOVO:pn20AQCTO1WW:pvrThinkPadT440s:rvnLENOVO:rn20AQCTO1WW:rvr0B98405STD:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 20AQCTO1WW
  dmi.product.version: ThinkPad T440s
  dmi.sys.vendor: LENOVO

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