Skipping sound: analog surround outputs, faulty "plugged" detection

asked 2015-11-07 07:12:21 -0500

I recently installed Fedora and have been working to resolve a sound issue: apparently skipping of audio (random milliseconds-long ranges without sound). For background, I have a Maximus V Gene motherboard, which uses a Realtek ALC898 audio chipset. I've run various flavors of Windows and Ubuntu on this machine in the past, without audio skipping.

My soundcards detected by ALSA (as captured from running alsa-info.sh):

!!Soundcards recognised by ALSA
!!-----------------------------
 0 [PCH            ]: HDA-Intel - HDA Intel PCH
                      HDA Intel PCH at 0xf7430000 irq 37
 1 [NVidia         ]: HDA-Intel - HDA NVidia
                      HDA NVidia at 0xf7080000 irq 17

This behavior is consistent across all applications, from streaming audio/video to local mp3s to running speaker-test. Originally I suspected it was pulseaudio, but after removing it, I continued to experience the same problems. I've played also with ALSA configuration changes (trying different model options recommended for my chipset), to no avail.

A long story made somewhat shorter, I just installed PulseAudio Volume Control to see if disabling the unused NVidia device would help. On the configuration tab, I noticed what I believe is my problem in the Built-in Audio dropdown: the system believes my analog devices are being intermittently unplugged.

Here are consecutive screenshots, as examples:

plugged unplugged

I'm at a loss for what to do next. If anyone has any suggestions, I would be most grateful. Thanks!

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