For sound I rely on a coax connection from an onboard SPDIF header to a DAC. A few weeks ago I purchased an H270 board with a Realtek ALC1220 on it and experienced trouble, namely: randomly sound coming from the SPDIF header drops out for a half second -- no hiss, no crackling, just silence for a half second. Line-out (analog) never cuts out.
I had the same setup on my G41 board and never had that problem. But then I was using jessie. So I installed the identical stretch system on that old box. The G41 continued to show no problems whatsoever.
Tonight, for the first time and all on its own, analog sound began playing through the SPDIF circuit. As I write this post I'm listening to vlc which thinks I'm on "Built-in Audio Analog Stereo." pavucontrol agrees [Configuration shows "Analog Stereo Output (unplugged)"].
device.profile.name = "analog-stereo"
device.profile.description = "Analog Stereo"
device.description = "Built-in Audio Analog Stereo"
But the sound is coming from the SPDIF header; it's the only thing that's attached to my stereo, and the sound is experiencing the silence "drops."
Note below: analog-output-lineout: Line Out (priority: 9900, not available)
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dido@topos:~$ pactl info
Server String: unix:/run/user/1000/pulse/native
Library Protocol Version: 32
Server Protocol Version: 32
Is Local: yes
Client Index: 26
Tile Size: 65472
User Name: dido
Host Name: topos
Server Name: pulseaudio
Server Version: 10.0
Default Sample Specification: s16le 2ch 44100Hz
Default Channel Map: front-left,front-right
Default Sink: alsa_output.pci-0000_00_1f.3.analog-stereo
Default Source: alsa_output.pci-0000_00_1f.3.analog-stereo.monitor
Cookie: 9543:081e
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dido@topos:~$ pactl list sinks
Sink #14
State: RUNNING
Name: alsa_output.pci-0000_00_1f.3.analog-stereo
Description: Built-in Audio Analog Stereo
Driver: module-alsa-card.c
Sample Specification: s16le 2ch 44100Hz
Channel Map: front-left,front-right
Owner Module: 6
Mute: no
Volume: front-left: 65536 / 100% / 0.00 dB, front-right: 65536 / 100% / 0.00 dB
balance 0.00
Base Volume: 65536 / 100% / 0.00 dB
Monitor Source: alsa_output.pci-0000_00_1f.3.analog-stereo.monitor
Latency: 5965 usec, configured 8000 usec
Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY
Properties:
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "Generic Analog"
alsa.id = "Generic Analog"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "0"
alsa.card = "0"
alsa.card_name = "HDA Intel PCH"
alsa.long_card_name = "HDA Intel PCH at 0xef420000 irq 135"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:00:1f.3"
sysfs.path = "/devices/pci0000:00/0000:00:1f.3/sound/card0"
device.bus = "pci"
device.vendor.id = "8086"
device.vendor.name = "Intel Corporation"
device.product.id = "a2f0"
device.form_factor = "internal"
device.string = "front:0"
device.buffering.buffer_size = "352800"
device.buffering.fragment_size = "176400"
device.access_mode = "mmap+timer"
device.profile.name = "analog-stereo"
device.profile.description = "Analog Stereo"
device.description = "Built-in Audio Analog Stereo"
alsa.mixer_name = "Realtek Generic"
alsa.components = "HDA:10ec1220,1458a0b6,00100003 HDA:8086280b,80860101,00100000"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
Ports:
analog-output-lineout: Line Out (priority: 9900, not available)
analog-output-headphones: Headphones (priority: 9000, not available)
Active Port: analog-output-lineout
Formats:
pcm