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[Richard Turner <turnerr@xxxxxxxxxxxx>]

In addition, my dmesg output has included new audio error messages:

rt286 i2c-INT343A:00: Device with ID register 10ec0288 is not rt286
....

[    2.951218] broadwell-audio broadwell-audio: ASoC: CODEC DAI rt286-aif1 not registered
[    2.951231] platform broadwell-audio: Driver broadwell-audio requests probe deferral
[    2.952648] cfg80211: World regulatory domain updated:
[    2.952652] cfg80211:  DFS Master region: unset
[    2.952653] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[    2.952656] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
[    2.952658] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
[    2.952660] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
[    2.952663] cfg80211:   (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
[    2.952665] cfg80211:   (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
[    2.952667] cfg80211:   (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
[    2.952669] cfg80211:   (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
[    2.952671] cfg80211:   (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)
[    2.963892] Bluetooth: hci0: read Intel version: 370810011002270d28
[    2.963895] Bluetooth: hci0: Intel device is already patched. patch num: 28
[    3.044326] input: SYNA7501:00 06CB:75C7 Pen as /devices/pci0000:00/INT3433:00/i2c-1/i2c-SYNA7501:00/0018:06CB:75C7.0002/input/input14
[    3.044537] input: SYNA7501:00 06CB:75C7 as /devices/pci0000:00/INT3433:00/i2c-1/i2c-SYNA7501:00/0018:06CB:75C7.0002/input/input15
[    3.045044] hid-multitouch 0018:06CB:75C7.0002: input,hidraw0: <UNKNOWN> HID v1.00 Device [SYNA7501:00 06CB:75C7] on 
[    3.045129] broadwell-audio broadwell-audio: ASoC: CODEC DAI rt286-aif1 not registered
[    3.045155] platform broadwell-audio: Driver broadwell-audio requests probe deferral
[    3.066911] broadwell-audio broadwell-audio: ASoC: CODEC DAI rt286-aif1 not registered
[    3.066944] platform broadwell-audio: Driver broadwell-audio requests probe deferral
[    3.143063] i2c_hid i2c-ALP0001:00: error in i2c_hid_init_report size:4 / ret_size:0
[    3.143781] i2c_hid i2c-ALP0001:00: error in i2c_hid_init_report size:4 / ret_size:0
[    3.160756] input: ALP0001:00 044E:1207 UNKNOWN as /devices/pci0000:00/INT3433:00/i2c-1/i2c-ALP0001:00/0018:044E:1207.0003/input/input17
[    3.160975] hid-multitouch 0018:044E:1207.0003: input,hidraw1: <UNKNOWN> HID v1.00 Mouse [ALP0001:00 044E:1207] on 
[    3.162009] broadwell-audio broadwell-audio: ASoC: CODEC DAI rt286-aif1 not registered
[    3.162036] platform broadwell-audio: Driver broadwell-audio requests probe deferral
[    3.188468] broadwell-audio broadwell-audio: ASoC: CODEC DAI rt286-aif1 not registered
[    3.188516] platform broadwell-audio: Driver broadwell-audio requests probe deferral
[    3.189250] broadwell-audio broadwell-audio: ASoC: CODEC DAI rt286-aif1 not registered
[    3.189281] platform broadwell-audio: Driver broadwell-audio requests probe deferral
[    3.189671] broadwell-audio broadwell-audio: ASoC: CODEC DAI rt286-aif1 not registered
[    3.189681] platform broadwell-audio: Driver broadwell-audio requests probe deferral
[    3.189810] broadwell-audio broadwell-audio: ASoC: CODEC DAI rt286-aif1 not registered
[    3.189818] platform broadwell-audio: Driver broadwell-audio requests probe deferral
[    3.190188] broadwell-audio broadwell-audio: ASoC: CODEC DAI rt286-aif1 not registered
[    3.190203] platform broadwell-audio: Driver broadwell-audio requests probe deferral
[    3.190514] broadwell-audio broadwell-audio: ASoC: CODEC DAI rt286-aif1 not registered
[    3.190525] platform broadwell-audio: Driver broadwell-audio requests probe deferral
[    3.906090] scsi 3:0:0:0: CD-ROM            TSSTcorp BDDVDW SE-506CB  TS01 PQ: 0 ANSI: 0
[    3.907881] sr 3:0:0:0: [sr0] scsi3-mmc drive: 0x/24x writer dvd-ram cd/rw xa/form2 cdda tray
[    3.907885] cdrom: Uniform CD-ROM driver Revision: 3.20
[    3.908080] sr 3:0:0:0: Attached scsi CD-ROM sr0
[    3.908155] broadwell-audio broadwell-audio: ASoC: CODEC DAI rt286-aif1 not registered
[    3.908176] platform broadwell-audio: Driver broadwell-audio requests probe deferral

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https://bugs.launchpad.net/bugs/1527825

Title:
  Dell Latitude 7350 - Audio Broken

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  On a 7350 with Ubuntu 15.04 there is no sound. The results of aplay
  are the following:

  **** List of PLAYBACK Hardware Devices ****
  card 0: HDMI [HDA Intel HDMI], device 3: HDMI 0 [HDMI 0]
    Subdevices: 1/1
    Subdevice #0: subdevice #0
  card 0: HDMI [HDA Intel HDMI], device 7: HDMI 1 [HDMI 1]
    Subdevices: 1/1
    Subdevice #0: subdevice #0
  card 0: HDMI [HDA Intel HDMI], device 8: HDMI 2 [HDMI 2]
    Subdevices: 1/1
    Subdevice #0: subdevice #0

  When looking in dmesg I receive the following:

  sst-acpi INT3438:00: No matching ASoC machine driver found

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.19.0-15-generic 3.19.0-15.15 [modified: boot/vmlinuz-3.19.0-15-generic]
  ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
  Uname: Linux 3.19.0-15-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1.8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  user       1217 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Fri Dec 18 23:20:57 2015
  HibernationDevice: RESUME=UUID=3dc87a64-48bc-467b-848e-68c10d6e1791
  InstallationDate: Installed on 2015-12-19 (0 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  MachineType: Dell Inc. Latitude 7350
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-15-generic root=UUID=eb4e1a85-48f2-4cfb-ba10-8db93f6fb225 ro quiet splash acpi_backlight=vendor "acpi_osi=!Windows 2013" "acpi_osi=!Windows 2012GRUB_CMDLINE_LINUX=" vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-15-generic N/A
   linux-backports-modules-3.19.0-15-generic  N/A
   linux-firmware                             1.143.7
  SourcePackage: linux
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 12/16/2014
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A03
  dmi.board.name: 0M5W75
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA03:bd12/16/2014:svnDellInc.:pnLatitude7350:pvr01:rvnDellInc.:rn0M5W75:rvrA00:cvnDellInc.:ct8:cvr:
  dmi.product.name: Latitude 7350
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

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