Same problem as Leonardo and similar hardware; sound on rear connector
OK but nothing from headphones on front.

**** List of PLAYBACK Hardware Devices ****
card 0: NVidia [HDA NVidia], device 0: VT1705 Analog [VT1705 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 2: VT1705 HP [VT1705 HP]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

$ lspci -v | grep -A7 -i "audio"
00:05.0 Audio device: NVIDIA Corporation MCP61 High Definition Audio (rev a2)
        Subsystem: ASRock Incorporation Device 0397
        Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 22
        Memory at fbff8000 (32-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: snd_hda_intel
        Kernel modules: snd-hda-intel


11.10 and several earlier releases OK.

Perhaps a side issue but the "test speakers" facility on the "Sound"
option of "System Settings." does not work.  I *think* it did at one
time (on 12.04) but not now.... odd...

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https://bugs.launchpad.net/bugs/985145

Title:
  no audio on ubuntu 12.04 on an intel hda vt1705

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