did you toggle the "IEC958 Playback Switch" ? can you post the output of alsa-info.sh
https://wiki.ubuntu.com/Audio/AlsaInfo http://www.realtek.com/products/productsView.aspx?Langid=1&PNid=24&PFid=37&Level=5&Conn=4&ProdID=165 The ALC663 is a 5.1 Channel High Definition Audio Codec The ALC663 provides two independent S/PDIF outputs and supports 16/20/24-bit SPDIF output with a sampling rate of up to 192kHz, offering easy connection of PCs to high quality consumer electronic products such as digital decoders and speakers. In addition to the standard (primary) SPDIF output function, the ALC663 features another independent (secondary) SPDIF-OUT output and converters that transport digital audio output to a High Definition Media Interface (HDMI) transmitter (becoming more common in high-end PCs). -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1259070 Title: N90SV, Realtek ALC663, Mic, Internal Underruns, dropouts or crackling sound Status in “alsa-driver” package in Ubuntu: Incomplete Bug description: Recording directly with arecord works, but using pulseaudio has crackling noise. Workaround is to disable timer based scheduling in /etc/pulse/default.pa AND setting default-fragments = 4 default-fragment-size-msec = 90 (or higher, lower still produces noise) in daemon.conf. Total hw buffer size is 371 ms (according to pulseaudio -vvv > pulse.log) ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.11.0-15.22-generic 3.11.10 Uname: Linux 3.11.0-15-generic i686 ApportVersion: 2.12.5-0ubuntu2.1 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: martin 2432 F.... pulseaudio Date: Mon Dec 9 09:29:29 2013 InstallationDate: Installed on 2013-04-22 (230 days ago) InstallationMedia: Kubuntu 12.10 "Quantal Quetzal" - Release i386 (20121017.1) MarkForUpload: True PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaRecordingTest: ALSA recording test through plughw:SIS966 failed Symptom_Card: Internes Audio - HDA SIS966 Symptom_Jack: Mic, Internal Symptom_Type: Underruns, dropouts, or "crackling" sound Title: [N90SV, Realtek ALC663, Mic, Internal] Underruns, dropouts or crackling sound UpgradeStatus: Upgraded to saucy on 2013-10-18 (51 days ago) dmi.bios.date: 02/25/2010 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 207 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: N90SV dmi.board.vendor: ASUS CORPORATION dmi.board.version: 1.0 dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK Computer Inc. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr207:bd02/25/2010:svnASUSTeKComputerInc.:pnN90SV:pvr1.0:rvnASUSCORPORATION:rnN90SV:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr: dmi.product.name: N90SV dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK Computer Inc. mtime.conffile..etc.modprobe.d.alsa.base.conf: 2013-12-08T17:23:33.527378 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1259070/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
