我有一台 htpc 来播放音乐，通过 hdmi 连接到 tx-sr608 放大器，这个放大器也通过 hdmi 连接到投影仪。
HTPC<->TX-SR608<->电视
当投影仪打开时，声音播放得很好，当我关闭它或者我没有打开所有电源时，在一段随机时间之后，通常在 7 到 10 分钟之间，pulseaudio 会抱怨 ELD 信息为空（见下文）并且开关下沉，并且再也听不到任何声音。
Aug 12 11:44:14 bhtpc pulseaudio[1403]: [pulseaudio] alsa-util.c: ELD info empty (for device=3)
Aug 12 11:44:14 bhtpc pulseaudio[1403]: [pulseaudio] module-alsa-card.c: Jack 'HDMI/DP,pcm=3 Jack' is now unplugged
Aug 12 11:44:14 bhtpc pulseaudio[1403]: [pulseaudio] device-port.c: Setting port hdmi-output-0 to status no
Aug 12 11:44:14 bhtpc pulseaudio[1403]: [pulseaudio] module-switch-on-port-available.c: Trying to switch away from port hdmi-output-0, f
ound iec958-stereo-output
Aug 12 11:44:14 bhtpc pulseaudio[1403]: [pulseaudio] module-switch-on-port-available.c: Trying to switch to port iec958-stereo-output
Aug 12 11:44:14 bhtpc pulseaudio[1403]: [pulseaudio] module-switch-on-port-available.c: Finding best profile for port iec958-stereo-outp
ut, preferred = iec958-stereo
Aug 12 11:44:14 bhtpc pulseaudio[1403]: [pulseaudio] module-suspend-on-idle.c: Sink alsa_output.pci-0000_00_1b.0.hdmi-stereo becomes idl
e, timeout in 5 seconds.
Aug 12 11:44:14 bhtpc pulseaudio[1403]: [pulseaudio] sink-input.c: Starting to move sink input 0 from 'alsa_output.pci-0000_00_1b.0.hdmi
-stereo'
读完这篇文章后，我尝试关闭 dpms错误报告
我尝试禁用 module-suspend-on-idle 和/或 module-switch-on-port-available
我不知道为什么它会掉落水槽而什么也没发生。如果我关闭/打开放大器，水槽就会恢复。
在水槽掉落之前，
kodi@bhtpc:~$ pactl list sinks
Sink #12
State: RUNNING
Name: alsa_output.pci-0000_00_1b.0.hdmi-stereo
Description: Built-in Audio Digital Stereo (HDMI)
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_1b.0.hdmi-stereo.monitor
Latency: 199214 usec, configured 210000 usec
Flags: HARDWARE DECIBEL_VOLUME LATENCY SET_FORMATS
Properties:
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "HDMI 0"
alsa.id = "HDMI 0"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "3"
alsa.card = "0"
alsa.card_name = "HDA Intel PCH"
alsa.long_card_name = "HDA Intel PCH at 0xf7c10000 irq 29"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:00:1b.0"
sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card0"
device.bus = "pci"
device.vendor.id = "8086"
device.vendor.name = "Intel Corporation"
device.product.id = "1e20"
device.product.name = "7 Series/C210 Series Chipset Family High Definition Audio Controller (ASUS P8Z77-V LX Motherboard)"
device.form_factor = "internal"
device.string = "hdmi:0"
device.buffering.buffer_size = "65536"
device.buffering.fragment_size = "32768"
device.access_mode = "mmap+timer"
device.profile.name = "hdmi-stereo"
device.profile.description = "Digital Stereo (HDMI)"
device.description = "Built-in Audio Digital Stereo (HDMI)"
alsa.mixer_name = "Realtek ALC887-VD"
alsa.components = "HDA:10ec0887,10438445,00100302 HDA:80862806,80860101,00100000"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
Ports:
hdmi-output-0: HDMI / DisplayPort (priority: 5900, available)
Active Port: hdmi-output-0
Formats:
pcm
跌落后
Sink #14
State: RUNNING
Name: alsa_output.pci-0000_00_1b.0.iec958-stereo
Description: Built-in Audio Digital Stereo (IEC958)
Driver: module-alsa-card.c
Sample Specification: s16le 2ch 44100Hz
Channel Map: front-left,front-right
Owner Module: 6
Mute: yes
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_1b.0.iec958-stereo.monitor
Latency: 199114 usec, configured 210000 usec
Flags: HARDWARE HW_MUTE_CTRL DECIBEL_VOLUME LATENCY SET_FORMATS
Properties:
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "ALC887-VD Digital"
alsa.id = "ALC887-VD Digital"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "1"
alsa.card = "0"
alsa.card_name = "HDA Intel PCH"
alsa.long_card_name = "HDA Intel PCH at 0xf7c10000 irq 29"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:00:1b.0"
sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card0"
device.bus = "pci"
device.vendor.id = "8086"
device.vendor.name = "Intel Corporation"
device.product.id = "1e20"
device.product.name = "7 Series/C210 Series Chipset Family High Definition Audio Controller (ASUS P8Z77-V LX Motherboard)"
device.form_factor = "internal"
device.string = "iec958:0"
device.buffering.buffer_size = "65536"
device.buffering.fragment_size = "32768"
device.access_mode = "mmap+timer"
device.profile.name = "iec958-stereo"
device.profile.description = "Digital Stereo (IEC958)"
device.description = "Built-in Audio Digital Stereo (IEC958)"
alsa.mixer_name = "Realtek ALC887-VD"
alsa.components = "HDA:10ec0887,10438445,00100302 HDA:80862806,80860101,00100000"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
Ports:
iec958-stereo-output: Digital Output (S/PDIF) (priority: 0)
Active Port: iec958-stereo-output
Formats:
pcm
任何想法 ？