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[Raymond <1255370@xxxxxxxxxxxxxxxxxx>]

seem you are not using alsa-driver since dB range of headphone is
different from speakers


https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/log/?qt=grep&q=cs4208

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https://bugs.launchpad.net/bugs/1255370

Title:
  MacBookPro11,1 (Late 2013 Haswell) has no sound

Status in “alsa-driver” package in Ubuntu:
  New
Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  I installed Ubuntu 13.10 on a new MacBook Pro (Late 2013, 13-inch
  Haswell retina).  The speakers did not work after installation, and
  after I fixed it, it would not work after suspend.  It turns out some
  of the flags were not set correctly.  I can fix these problems but it
  would be nice to have them fixed at installation.

  The problem can be seen in the GPIO section in
  /proc/asound/card1/codec#0 (card0 is for HDMI).  After boot, the GPIO
  flags for IO[0] were

  GPIO: io=6, o=2, i=0, unsolicited=1, wake=1
    IO[0]: enable=1, dir=1, wake=0, sticky=0, data=0, unsol=0

  If data were set to 1, sound would work!  I fixed this by installing
  alsa-tools and adding to /etc/rc.local a line:

  hda-verb /dev/snd/hwC1D0 0x1 set_gpio_data 1

  After resuming from suspend, the GPIO flags for IO[0] became

  GPIO: io=6, o=2, i=0, unsolicited=1, wake=1
    IO[0]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0

  Here, three flags were set to 0.  I fixed this by adding to
  /etc/pm/sleep.d/99_myfix a few lines:

  #!/bin/sh
  case "$1" in
  	resume|thaw)
  		hda-verb /dev/snd/hwC1D0 0x1 set_gpio_mask 1
  		sleep 1
  		hda-verb /dev/snd/hwC1D0 0x1 set_gpio_direction 1
  		sleep 1
  		hda-verb /dev/snd/hwC1D0 0x1 set_gpio_data 1
  		;;
  esac
  --- 
  ApportVersion: 2.12.5-0ubuntu2.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  lic3       3717 F.... pulseaudio
   /dev/snd/controlC0:  lic3       3717 F.... pulseaudio
  DistroRelease: Ubuntu 13.10
  HibernationDevice: RESUME=UUID=a2156b27-f1e5-4408-9fb3-491e6f8229fb
  InstallationDate: Installed on 2013-11-06 (21 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: Apple Inc. MacBookPro11,1
  MarkForUpload: True
  NonfreeKernelModules: wl
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-13-generic.efi.signed root=UUID=b62d2699-f735-46a1-8e31-23146f2497a3 ro libata.force=noncq quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.11.0-13.20-generic 3.11.6
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-13-generic N/A
   linux-backports-modules-3.11.0-13-generic  N/A
   linux-firmware                             1.116
  Tags:  saucy saucy
  Uname: Linux 3.11.0-13-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 09/22/2013
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBP111.88Z.0133.B00.1309220923
  dmi.board.asset.tag: Base Board Asset Tag#
  dmi.board.name: Mac-189A3D4F975D5FFC
  dmi.board.vendor: Apple Inc.
  dmi.board.version: MacBookPro11,1
  dmi.chassis.type: 10
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-189A3D4F975D5FFC
  dmi.modalias: dmi:bvnAppleInc.:bvrMBP111.88Z.0133.B00.1309220923:bd09/22/2013:svnAppleInc.:pnMacBookPro11,1:pvr1.0:rvnAppleInc.:rnMac-189A3D4F975D5FFC:rvrMacBookPro11,1:cvnAppleInc.:ct10:cvrMac-189A3D4F975D5FFC:
  dmi.product.name: MacBookPro11,1
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

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