HDMI를 통해 사운드 시스템에 일부 오디오를 재생하려고 합니다(https://www.amazon.com/dp/B09H5GJCML). 스피커 뒷면에 있는 HDMI 모양의 구멍 옆에 "ARC"라고 적혀 있습니다. 나는 아치 리눅스(arch Linux), XFCE4, 펄스 오디오(Pulse Audio)를 실행하는 노트북으로 구동합니다. HDMI를 연결하고 스피커를 "ARC" 모드로 설정하면 pavucontrol은 HDMI 설정을 "Unplugged Not Available"로 표시합니다.
나는 다음을 포함하여 몇 가지 테스트를 실행했습니다.
for i in 0 1 2 3 4 5; do
echo "doing 1,$i";
speaker-test -l 1 -c 6 -D hdmi:HDMI,"$i";
done;
( aplay -l보여주다
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: 92HD93BXX Analog [92HD93BXX Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 8: HDMI 2 [HDMI 2]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 9: HDMI 3 [HDMI 3]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 10: HDMI 4 [HDMI 4]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 11: HDMI 5 [HDMI 5]
Subdevices: 0/1
Subdevice #0: subdevice #0
aplay -L프로그램
null
Discard all samples (playback) or generate zero samples (capture)
lavrate
Rate Converter Plugin Using Libav/FFmpeg Library
samplerate
Rate Converter Plugin Using Samplerate Library
speexrate
Rate Converter Plugin Using Speex Resampler
jack
JACK Audio Connection Kit
oss
Open Sound System
pulse
PulseAudio Sound Server
speex
Plugin using Speex DSP (resample, agc, denoise, echo, dereverb)
upmix
Plugin for channel upmix (4,6,8)
vdownmix
Plugin for channel downmix (stereo) with a simple spacialization
default
Default ALSA Output (currently PulseAudio Sound Server)
sysdefault:CARD=PCH
HDA Intel PCH, 92HD93BXX Analog
Default Audio Device
front:CARD=PCH,DEV=0
HDA Intel PCH, 92HD93BXX Analog
Front output / input
surround21:CARD=PCH,DEV=0
HDA Intel PCH, 92HD93BXX Analog
2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=PCH,DEV=0
HDA Intel PCH, 92HD93BXX Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=PCH,DEV=0
HDA Intel PCH, 92HD93BXX Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=PCH,DEV=0
HDA Intel PCH, 92HD93BXX Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=PCH,DEV=0
HDA Intel PCH, 92HD93BXX Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=PCH,DEV=0
HDA Intel PCH, 92HD93BXX Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
usbstream:CARD=PCH
HDA Intel PCH
USB Stream Output
hdmi:CARD=HDMI,DEV=0
HDA ATI HDMI, HDMI 0
HDMI Audio Output
hdmi:CARD=HDMI,DEV=1
HDA ATI HDMI, HDMI 1
HDMI Audio Output
hdmi:CARD=HDMI,DEV=2
HDA ATI HDMI, HDMI 2
HDMI Audio Output
hdmi:CARD=HDMI,DEV=3
HDA ATI HDMI, HDMI 3
HDMI Audio Output
hdmi:CARD=HDMI,DEV=4
HDA ATI HDMI, HDMI 4
HDMI Audio Output
hdmi:CARD=HDMI,DEV=5
HDA ATI HDMI, HDMI 5
HDMI Audio Output
usbstream:CARD=HDMI
HDA ATI HDMI
USB Stream Output
)
내가 본 게시물에 따르면 설치 sof-firmware' and 'alsa-ucm-conf후 다음 과 같이 dmesg | grep sof;말했습니다.
[ 0.074515] software IO TLB: area num 8.
[ 0.389221] PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
[ 0.389222] software IO TLB: mapped [mem 0x00000000c670a000-0x00000000ca70a000] (64MB)
pacmd list-sinks다음과 같습니다.
1 sink(s) available.
* index: 8
name: <alsa_output.pci-0000_01_00.1.hdmi-surround>
driver: <module-alsa-card.c>
flags: HARDWARE DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
state: IDLE
suspend cause: (none)
priority: 9030
volume: front-left: 65536 / 100% / 0.00 dB, front-right: 65536 / 100% / 0.00 dB, rear-left: 65536 / 100% / 0.00 dB, rear-right: 65536 / 100% / 0.00 dB, front-center: 65536 / 100% / 0.00 dB, lfe: 65536 / 100% / 0.00 dB
balance 0.00
base volume: 65536 / 100% / 0.00 dB
volume steps: 65537
muted: no
current latency: 39.72 ms
max request: 20 KiB
max rewind: 20 KiB
monitor source: 9
sample spec: s16le 6ch 44100Hz
channel map: front-left,front-right,rear-left,rear-right,front-center,lfe
Surround 5.1
used by: 0
linked by: 1
configured latency: 40.00 ms; range is 0.50 .. 1999.82 ms
card: 0 <alsa_card.pci-0000_01_00.1>
module: 6
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 = "1"
alsa.card_name = "HDA ATI HDMI"
alsa.long_card_name = "HDA ATI HDMI at 0xf7e60000 irq 33"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:01:00.1"
sysfs.path = "/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1"
device.bus = "pci"
device.vendor.id = "1002"
device.vendor.name = "Advanced Micro Devices, Inc. [AMD/ATI]"
device.product.id = "aab0"
device.product.name = "Oland/Hainan/Cape Verde/Pitcairn HDMI Audio [Radeon HD 7000 Series]"
device.string = "hdmi:1"
device.buffering.buffer_size = "1058304"
device.buffering.fragment_size = "529152"
device.access_mode = "mmap+timer"
device.profile.name = "hdmi-surround"
device.profile.description = "Digital Surround 5.1 (HDMI)"
device.description = "Oland/Hainan/Cape Verde/Pitcairn HDMI Audio [Radeon HD 7000 Series] Digital Surround 5.1 (HDMI)"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
ports:
hdmi-output-0: HDMI / DisplayPort (priority 5900, latency offset 0 usec, available: no)
properties:
device.icon_name = "video-display"
active port: <hdmi-output-0>
(내장 출력을 비활성화했습니다)
그리고 pacmd list-cards말하다
index: 0
name: <alsa_card.pci-0000_01_00.1>
driver: <module-alsa-card.c>
owner module: 6
properties:
alsa.card = "1"
alsa.card_name = "HDA ATI HDMI"
alsa.long_card_name = "HDA ATI HDMI at 0xf7e60000 irq 33"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:01:00.1"
sysfs.path = "/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1"
device.bus = "pci"
device.vendor.id = "1002"
device.vendor.name = "Advanced Micro Devices, Inc. [AMD/ATI]"
device.product.id = "aab0"
device.product.name = "Oland/Hainan/Cape Verde/Pitcairn HDMI Audio [Radeon HD 7000 Series]"
device.string = "1"
device.description = "Oland/Hainan/Cape Verde/Pitcairn HDMI Audio [Radeon HD 7000 Series]"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
profiles:
output:hdmi-stereo: Digital Stereo (HDMI) Output (priority 5900, available: no)
output:hdmi-surround: Digital Surround 5.1 (HDMI) Output (priority 800, available: no)
output:hdmi-surround71: Digital Surround 7.1 (HDMI) Output (priority 800, available: no)
output:hdmi-stereo-extra1: Digital Stereo (HDMI 2) Output (priority 5700, available: no)
output:hdmi-surround-extra1: Digital Surround 5.1 (HDMI 2) Output (priority 600, available: no)
output:hdmi-surround71-extra1: Digital Surround 7.1 (HDMI 2) Output (priority 600, available: no)
output:hdmi-stereo-extra2: Digital Stereo (HDMI 3) Output (priority 5700, available: no)
output:hdmi-surround-extra2: Digital Surround 5.1 (HDMI 3) Output (priority 600, available: no)
output:hdmi-surround71-extra2: Digital Surround 7.1 (HDMI 3) Output (priority 600, available: no)
output:hdmi-stereo-extra3: Digital Stereo (HDMI 4) Output (priority 5700, available: no)
output:hdmi-surround-extra3: Digital Surround 5.1 (HDMI 4) Output (priority 600, available: no)
output:hdmi-surround71-extra3: Digital Surround 7.1 (HDMI 4) Output (priority 600, available: no)
output:hdmi-stereo-extra4: Digital Stereo (HDMI 5) Output (priority 5700, available: no)
output:hdmi-surround-extra4: Digital Surround 5.1 (HDMI 5) Output (priority 600, available: no)
output:hdmi-surround71-extra4: Digital Surround 7.1 (HDMI 5) Output (priority 600, available: no)
output:hdmi-stereo-extra5: Digital Stereo (HDMI 6) Output (priority 5700, available: no)
output:hdmi-surround-extra5: Digital Surround 5.1 (HDMI 6) Output (priority 600, available: no)
output:hdmi-surround71-extra5: Digital Surround 7.1 (HDMI 6) Output (priority 600, available: no)
off: Off (priority 0, available: unknown)
active profile: <output:hdmi-surround>
sinks:
alsa_output.pci-0000_01_00.1.hdmi-surround/#8: Oland/Hainan/Cape Verde/Pitcairn HDMI Audio [Radeon HD 7000 Series] Digital Surround 5.1 (HDMI)
sources:
alsa_output.pci-0000_01_00.1.hdmi-surround.monitor/#9: Monitor of Oland/Hainan/Cape Verde/Pitcairn HDMI Audio [Radeon HD 7000 Series] Digital Surround 5.1 (HDMI)
ports:
hdmi-output-0: HDMI / DisplayPort (priority 5900, latency offset 0 usec, available: no)
properties:
device.icon_name = "video-display"
hdmi-output-1: HDMI / DisplayPort 2 (priority 5800, latency offset 0 usec, available: no)
properties:
device.icon_name = "video-display"
hdmi-output-2: HDMI / DisplayPort 3 (priority 5700, latency offset 0 usec, available: no)
properties:
device.icon_name = "video-display"
hdmi-output-3: HDMI / DisplayPort 4 (priority 5600, latency offset 0 usec, available: no)
properties:
device.icon_name = "video-display"
hdmi-output-4: HDMI / DisplayPort 5 (priority 5500, latency offset 0 usec, available: no)
properties:
device.icon_name = "video-display"
hdmi-output-5: HDMI / DisplayPort 6 (priority 5400, latency offset 0 usec, available: no)
properties:
device.icon_name = "video-display"
(내장된 부분은 생략했습니다)
그러나 pavucontrol 출력은 동일해 보이지만 여전히 소리가 나지 않습니다. "ARC" 때문에 특별히 해야 할 일이 있는지 궁금합니다. 이것이 HDMI를 통해 오디오를 "단지" 전송하는 것과 다른가요? 어떤 제안이라도 도움이 될 것입니다. 아니면 제가 놓친 부분이 보이시나요?
답변1
ARC = 오디오 리턴 채널. 오디오 전송을 허용하는 데 사용됩니다.주신호 반대방향즉, HDMI를 사용하여 장치 A에서 B로 신호(오디오, 비디오 또는 둘 다)를 전송하는 경우 ARC를 사용하여 B에서 A로 오디오를 전송할 수 있습니다.
예를 들어 HDMI 케이블을 통해 ARC 지원 홈시어터 증폭기를 ARC 지원 TV에 연결할 수 있습니다. 앰프에 연결된 소스에서 콘텐츠를 시청할 때 일반(ARC가 아닌) HDMI 비디오 + 오디오 신호를 TV로 보냅니다. 하지만 앰프가 오디오를 처리하기 위해 더 나은 스피커를 사용하도록 하는 것이 더 좋을 수도 있습니다. 신호의 비디오 부분만 사용하십시오.
그러나 TV 전송을 시청할 때 ARC가 작동하는 곳이 바로 이 부분입니다. ARC는 TV 채널의 오디오를 앰프로 다시 전송하므로 앰프에 연결된 다중 채널 스피커를 사용하여 TV의 소리를 들을 수 있습니다. 동일한 HDMI 케이블을 사용하여 앰프의 화면 메뉴 표시를 TV로 전송하는 옵션도 있습니다.
ATI 디스플레이 어댑터는 순수 HDMI이므로산출(이는 ARC 기능이 있다면오디오 입력), 여기서는 ARC 모드 사용이 적용되지 않습니다. 컴퓨터의 HDMI 출력에서 스피커로 오디오를 보내려면 역방향 ARC 대신 HDMI의 "주 신호"를 사용할 수 있습니다.
가능하다면 스피커에 대해 비ARC HDMI 모드를 선택해 보십시오.