You will find below the hda info in my syslog : grep hda syslog
Dec 28 12:53:37 ubuntu kernel: [ 2.247883] snd_hda_intel 0000:00:1b.0: irq 47 for MSI/MSI-X Dec 28 12:53:37 ubuntu kernel: [ 2.664258] hda_intel: Disabling MSI Dec 28 12:53:37 ubuntu kernel: [ 2.664264] hda-intel 0000:01:00.1: Handle VGA-switcheroo audio client Dec 28 12:53:37 ubuntu kernel: [ 2.664289] hda-intel 0000:01:00.1: Disabling 64bit DMA Dec 28 12:53:37 ubuntu kernel: [ 2.667560] hda-intel 0000:01:00.1: Enable delay in RIRB handling Dec 28 14:15:01 ubuntu kernel: [ 2.734667] hda-intel 0000:00:1b.0: Applying patch firmware 'hda-jack-detect.fw' Dec 28 14:15:01 ubuntu kernel: [ 2.734777] hda_intel: Disabling MSI Dec 28 14:15:01 ubuntu kernel: [ 2.734780] hda-intel 0000:01:00.1: Handle VGA-switcheroo audio client Dec 28 14:15:01 ubuntu kernel: [ 2.734805] hda-intel 0000:01:00.1: Disabling 64bit DMA Dec 28 14:15:01 ubuntu kernel: [ 2.735424] snd_hda_intel 0000:00:1b.0: irq 47 for MSI/MSI-X Dec 28 14:15:01 ubuntu kernel: [ 2.738020] hda-intel 0000:01:00.1: Enable delay in RIRB handling -- 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/1248116 Title: PulseAudio switch rapidly port making the sound horrible Status in “pulseaudio” package in Ubuntu: Incomplete Bug description: I have a Realtek sound system integrated to the motherboard Gygabyte Z87X-UD3H (http://www.gigabyte.fr/products/product- page.aspx?pid=4481#sp) having problems on Ubuntu 13.10. The sound is jerky. When I open the "Volume control PulseAudio" I can see pulseaudio changing the audio output "Internal Audio Analogic Stereo". The port switch rapidly from "Analogic output" to "Analogic headphones" making a jerky sound. ta tA ta tA ta tA. Do you have a solution to this problem ? King regards Will To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1248116/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp