I also have a very similar problem with my Alienware 18x r2 Running Linux Mint 17.2
I just installed the latest " Kernel 4.1.7-040107-generic " hoping it would help but no changes HDA Intel HDA Nvida Realtek ALC3661 My problem is my sound was only coming through my Sub So sound is very Dull and Bad Quallity I have tried HDAJackRetask and have sound coming from the two normal speakers but not the Sub I contacted Dell they don’t really seem interested Sound Card Specs Realtek ACL3661 Advanced Linux Sound Architecture Driver Version k3.16.0-38-generic. List of PLAYBACK Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: ALC3661 Analog [ALC3661 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: NVidia [HDA NVidia], device 7: HDMI 1 [HDMI 1] Subdevices: 1/1 Subdevice #0: subdevice #0 gary@gary-Alienware-18 ~ $ lsmod | grep snd snd_hda_codec_hdmi 47548 1 snd_hda_codec_realtek 77467 1 snd_hda_codec_generic 69011 1 snd_hda_codec_realtek snd_hda_intel 30469 7 snd_hda_controller 30228 1 snd_hda_intel snd_hda_codec 139682 5 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_intel,snd_hda_controller snd_hwdep 17698 1 snd_hda_codec snd_pcm 104112 5 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_controller snd_seq_midi 13564 0 snd_seq_midi_event 14899 1 snd_seq_midi snd_rawmidi 30876 1 snd_seq_midi snd_seq 63074 2 snd_seq_midi_event,snd_seq_midi snd_seq_device 14497 3 snd_seq,snd_rawmidi,snd_seq_midi snd_timer 29562 2 snd_pcm,snd_seq snd 79468 24 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel,snd_seq_device soundcore 15047 2 snd,snd_hda_codec ry@gary-Alienware-18 ~ $ cat /proc/asound/devices 1: : sequencer 2: [ 0] : control 3: [ 0- 0]: digital audio playback 4: [ 0- 0]: digital audio capture 5: [ 0- 0]: hardware dependent 6: [ 1] : control 7: [ 1- 3]: digital audio playback 8: [ 1- 7]: digital audio playback 9: [ 1- 0]: hardware dependent 33: : timer ┌──────────────────────────── AlsaMixer v1.0.27.2 ─────────────────────────────┐ │ Card: HDA Intel PCH F1: Help │ │ Chip: Realtek ALC3661 F2: System information │ │ View: F3:[Playback] F4: Capture F5: All F6: Select sound card │ │ Item: Master [dB gain: -23.25] Esc: Exit │ │ │ │ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ ┌──┐ │ │ │ │ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │ │ │ │ │ │ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │ │ │ │ │ │ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │ │ → │ │ │ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │ │ → │ │ │ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │ │ → │ │ │ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │ │ → │ │ │ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │ │ → │ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │ │ → │ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │ │ → │ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │ │ │ │ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │▒▒│ │ │ │ │ ├──┤ ├──┤ ├──┤ ┌──┐ ├──┤ ┌──┐ └──┘ ├──┤ │ │ │OO│ │OO│ │OO│ │OO│ │OO│ │OO│ │MM│ │ │ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ └──┘ │ │ 36 100<>100 100<>100 100<>100 100<>100 0<>0 │ │ < Master >Headphon Headphon Speaker Speaker Speaker PCM Mic │ └──────────────────────────────────────────────────────────────────────────── I am hoping there is going to an easy Fix There are many others with Alienware Rigs waiting for Linux to be compatible Cheers Gaz -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1320020 Title: [Inspiron 1470, Realtek ALC272, Speaker, Internal] No sound at all Status in alsa-driver package in Ubuntu: Confirmed Bug description: I can get perfect sound through headphones, and the kernel recognizes the internal speaker, but nothing is ever played through it. I have personally tested a pair of earbuds to make sure that sound could play through the headphone port, and that isn't a problem. The sound driver just refuses to recognize the existence of the speaker, even though the kernel does. I wouldn't be surprised if the last upstream update had something to do with it. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.14.1-0ubuntu3.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: isiah 7361 F.... pulseaudio CurrentDesktop: GNOME Date: Thu May 15 18:07:52 2014 InstallationDate: Installed on 2014-01-29 (106 days ago) InstallationMedia: Ubuntu-GNOME 13.10 "Saucy Salamander" - Release amd64 (20131017) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Intel failed Symptom_Card: Built-in Audio - HDA Intel Symptom_DevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: isiah 7361 F.... pulseaudio Symptom_Jack: Speaker, Internal Symptom_Type: No sound at all Title: [Inspiron 1470, Realtek ALC272, Speaker, Internal] No sound at all UpgradeStatus: Upgraded to trusty on 2014-05-04 (11 days ago) dmi.bios.date: 03/23/2011 dmi.bios.vendor: Dell Inc. dmi.bios.version: A05 dmi.board.name: 0M7CYJ dmi.board.vendor: Dell Inc. dmi.board.version: A05 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: A05 dmi.modalias: dmi:bvnDellInc.:bvrA05:bd03/23/2011:svnDellInc.:pnInspiron1470:pvrA05123:rvnDellInc.:rn0M7CYJ:rvrA05:cvnDellInc.:ct8:cvrA05: dmi.product.name: Inspiron 1470 dmi.product.version: A05123 dmi.sys.vendor: Dell Inc. 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