are you using hdmi connected to your hdmi tv/receiver ? did your graphic driver get your hdmi tv/receiver 's EDID ?
seem your hdmi tv is not plugged control.1 { iface CARD name 'HDMI/DP,pcm=3 Jack' value false comment { access read type BOOLEAN count 1 } } hdmi-output-0: HDMI / DisplayPort (priority 5900, latency offset 0 usec, available: no) properties: device.icon_name = "video-display" Codec: Silicon Image SiI1392 HDMI Address: 1 AFG Function Id: 0x1 (unsol 0) Vendor Id: 0x10951392 Subsystem Id: 0x1028022f Revision Id: 0x100000 No Modem Function Group found Default PCM: rates [0x0]: bits [0x0]: formats [0x0]: Default Amp-In caps: N/A Default Amp-Out caps: N/A State of AFG node 0x01: Power states: D0 D3 Power: setting=D0, actual=D0 GPIO: io=0, o=0, i=0, unsolicited=0, wake=0 Node 0x02 [Audio Output] wcaps 0x6211: 8-Channels Digital Converter: stream=8, channel=0 Digital: Enabled Digital category: 0x0 IEC Coding Type: 0x0 PCM: rates [0x7f0]: 32000 44100 48000 88200 96000 176400 192000 bits [0x1e]: 16 20 24 32 formats [0x5]: PCM AC3 Node 0x03 [Pin Complex] wcaps 0x40738d: 8-Channels Digital Amp-Out CP Control: name="HDMI/DP,pcm=3 Jack", index=0, device=0 Control: name="IEC958 Playback Con Mask", index=0, device=0 Control: name="IEC958 Playback Pro Mask", index=0, device=0 Control: name="IEC958 Playback Default", index=0, device=0 Control: name="IEC958 Playback Switch", index=0, device=0 Control: name="ELD", index=0, device=3 Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-Out vals: [0x00 0x00] Pincap 0x00000094: OUT Detect HDMI Pin Default 0x18560010: [Jack] Digital Out at Int HDMI Conn = Digital, Color = Unknown DefAssociation = 0x1, Sequence = 0x0 Pin-ctls: 0x40: OUT Unsolicited: tag=01, enabled=1 Connection: 1 0x02 [ 12.960058] HDMI: ELD buf size is 0, force 128 [ 12.968048] HDMI: invalid ELD data byte 0 [ 13.340753] input: HDA Intel Front Headphone Surround as /devices/pci0000:00/0000:00:1b.0/sound/card0/input7 [ 13.340863] input: HDA Intel Front Headphone Front as /devices/pci0000:00/0000:00:1b.0/sound/card0/input8 [ 13.340946] input: HDA Intel HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1b.0/sound/card0/input9 [ 13.342059] [drm] Memory usable by graphics device = 512M [ 13.342072] i915 0000:00:02.0: setting latency timer to 64 [ 13.364833] i915 0000:00:02.0: irq 47 for MSI/MSI-X [ 13.364847] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010). [ 13.364849] [drm] Driver supports precise vblank timestamp query. [ 13.364917] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem [ 13.537385] [drm] initialized overlay support [ 13.706669] fbcon: inteldrmfb (fb0) is primary device [ 14.600583] Console: switching to colour frame buffer device 160x50 [ 14.604266] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device [ 14.604269] i915 0000:00:02.0: registered panic notifier [ 14.639375] init: failsafe main process (474) killed by TERM signal [ 14.650689] acpi device:30: registered as cooling_device2 [ 14.650929] ACPI: Video Device [VID] (multi-head: yes rom: no post: no) [ 14.652230] input: Video Bus as /devices/LNXSYSTM:00/device:00/PNP0A03:00/LNXVIDEO:00/input/input10 [ 14.653462] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1253739 Title: [Inspiron 1525, Silicon Image SiI1392 HDMI, Digital Out, HDMI] No sound at all Status in “pulseaudio” package in Ubuntu: New Bug description: Initially, I had to reset the sound card manually from 'HDMI' to 'analogue' to get sound working, but then the hotkeys no longer managed to control volume. Now, having run the bug report, things work again! I do not understand why. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: pulseaudio 1:4.0-0ubuntu6 ProcVersionSignature: Ubuntu 3.11.0-13.20-generic 3.11.6 Uname: Linux 3.11.0-13-generic x86_64 ApportVersion: 2.12.5-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: bryn 1428 F.... pulseaudio Date: Thu Nov 21 18:16:01 2013 InstallationDate: Installed on 2012-10-30 (387 days ago) InstallationMedia: Xubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) MarkForUpload: True SourcePackage: pulseaudio Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Intel successful Symptom_Card: Built-in Audio - HDA Intel Symptom_DevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: bryn 1428 F.... pulseaudio Symptom_Jack: Digital Out, HDMI Symptom_PulsePlaybackTest: PulseAudio playback test failed Symptom_Type: No sound at all Title: [Inspiron 1525, Silicon Image SiI1392 HDMI, Digital Out, HDMI] No sound at all UpgradeStatus: Upgraded to saucy on 2013-11-16 (5 days ago) dmi.bios.date: 03/10/2008 dmi.bios.vendor: Dell Inc. dmi.bios.version: A11 dmi.board.name: 0U990C dmi.board.vendor: Dell Inc. dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA11:bd03/10/2008:svnDellInc.:pnInspiron1525:pvr:rvnDellInc.:rn0U990C:rvr:cvnDellInc.:ct8:cvr: dmi.product.name: Inspiron 1525 dmi.sys.vendor: Dell Inc. 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