Public bug reported: the problem solved, thank you!!!
ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.13.0-30.55-generic 3.13.11.2 Uname: Linux 3.13.0-30-generic i686 ApportVersion: 2.14.1-0ubuntu3.2 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: dimitris 1898 F.... pulseaudio CurrentDesktop: XFCE Date: Sun Jul 13 01:14:08 2014 InstallationDate: Installed on 2014-07-12 (0 days ago) InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140416.2) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:MID successful Symptom_Card: Εσωτερικός ήχος - HDA Intel MID Symptom_Jack: Speaker, Internal Symptom_PulsePlaybackTest: PulseAudio playback test successful Symptom_Type: Underruns, dropouts, or "crackling" sound Title: [1101HAGG, Realtek ALC269, Speaker, Internal] Underruns, dropouts or crackling sound UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/25/2009 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0208 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: 1101HAGG dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: x.xx dmi.chassis.asset.tag: 0x00000000 dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTek Computer INC. dmi.chassis.version: x.x dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0208:bd09/25/2009:svnASUSTeKComputerINC.:pn1101HAGG:pvrx.x:rvnASUSTeKComputerINC.:rn1101HAGG:rvrx.xx:cvnASUSTekComputerINC.:ct10:cvrx.x: dmi.product.name: 1101HAGG dmi.product.version: x.x dmi.sys.vendor: ASUSTeK Computer INC. ** Affects: alsa-driver (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug i386 trusty -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1341213 Title: [1101HAGG, Realtek ALC269, Speaker, Internal] Underruns, dropouts or crackling sound, the sound comes with ups and downs to frequency To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1341213/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs