我正在尝试在具有 Intel Skylake HDMI 输出的 Fedora 25 上的 Onkyo 接收器 TX-RZ900 上输出多 pcm 通道。
我在这篇文章中得到了一些有用的信息如何配置 PulseAudio 以通过 HDMI 实现 7.1 环绕声？但不幸的是，扬声器测试输出仅在左前和右前通道上
AVR 报告正确的通道：
[liveuser@localhost-live ~]$ cat /proc/asound/card0/eld#2.1
monitor_present 1
eld_valid 1
monitor_name TX-RZ900
connection_type HDMI
eld_version [0x2] CEA-861D or below
edid_version [0x3] CEA-861-B, C or D
manufacture_id 0xcb3d
product_id 0xf91
port_id 0x0
support_hdcp 0
support_ai 1
audio_sync_delay 0
speakers [0x4f] FL/FR LFE FC RL/RR RLC/RRC
sad_count 9
sad0_coding_type [0x1] LPCM
sad0_channels 2
sad0_rates [0x1ee0] 32000 44100 48000 88200 96000 176400 192000
sad0_bits [0xe0000] 16 20 24
sad1_coding_type [0x1] LPCM
sad1_channels 8
sad1_rates [0x1ee0] 32000 44100 48000 88200 96000 176400 192000
sad1_bits [0xe0000] 16 20 24
sad2_coding_type [0x2] AC-3
sad2_channels 8
sad2_rates [0xe0] 32000 44100 48000
sad2_max_bitrate 640000
sad3_coding_type [0x7] DTS
sad3_channels 8
sad3_rates [0xc0] 44100 48000
sad3_max_bitrate 1536000
sad4_coding_type [0x9] DSD (One Bit Audio)
sad4_channels 6
sad4_rates [0x40] 44100
sad5_coding_type [0xa] E-AC-3/DD+ (Dolby Digital Plus)
sad5_channels 8
sad5_rates [0xc0] 44100 48000
sad6_coding_type [0xb] DTS-HD
sad6_channels 8
sad6_rates [0x1ec0] 44100 48000 88200 96000 176400 192000
sad7_coding_type [0xb] DTS-HD
sad7_channels 8
sad7_rates [0x1ec0] 44100 48000 88200 96000 176400 192000
sad8_coding_type [0xc] MLP (Dolby TrueHD)
sad8_channels 8
sad8_rates [0x1ee0] 32000 44100 48000 88200 96000 176400 192000
aplay -l 报告：（仅卡 0 设备 7 输出一些声音）
[root@localhost-live pulse]# aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: CA0132 Analog [CA0132 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 1: CA0132 Digital [CA0132 Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 8: HDMI 2 [HDMI 2]
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
扬声器测试命令仅输出到 2 个前置通道：
[liveuser@localhost-live ~]$ pasuspender -- speaker-test -c 8 -twav -Dplughw:0,7
speaker-test 1.1.1
Playback device is plughw:0,7
Stream parameters are 48000Hz, S16_LE, 8 channels
WAV file(s)
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 16 to 262144
Period size range from 8 to 131072
Using max buffer size 262144
Periods = 4
was set period_size = 65536
was set buffer_size = 262144
0 - Front Left
4 - Front Center
1 - Front Right
7 - Rear Right
3 - Rear Right Center
2 - Rear Left Center
6 - Rear Left
5 - LFE
/sys/class/drm/card0-DP-1/edid ：
[liveuser@localhost-live card0-DP-1]$ hexdump -C edid
00000000 00 ff ff ff ff ff ff 00 3d cb 91 0f 00 00 00 00 |........=.......|
00000010 00 19 01 03 80 34 1d 78 2a 60 41 a6 56 4a 9c 25 |.....4.x*`A.VJ.%|
00000020 12 50 54 2f cf 00 01 01 81 40 81 80 95 00 95 0f |.PT/.....@......|
00000030 b3 00 01 01 01 01 02 3a 80 18 71 38 2d 40 58 2c |.......:..q8-@X,|
00000040 45 00 09 25 21 00 00 1e 8c 0a d0 8a 20 e0 2d 10 |E..%!....... .-.|
00000050 10 3e 96 00 09 25 21 00 00 18 00 00 00 fc 00 54 |.>...%!........T|
00000060 58 2d 52 5a 39 30 30 0a 20 20 20 20 00 00 00 fd |X-RZ900. ....|
00000070 00 38 4c 1e 53 11 00 0a 20 20 20 20 20 20 01 b4 |.8L.S... ..|
00000080 02 03 38 f0 4c 01 02 03 04 05 10 11 12 13 14 1e |..8.L...........|
00000090 1f 3b 09 7f 07 0f 7f 07 17 07 50 3f 06 c0 4d 02 |.;........P?..M.|
000000a0 00 57 06 01 5f 7e 03 5f 7e 01 67 7f 01 83 4f 00 |.W.._~._~.g...O.|
000000b0 00 66 03 0c 00 14 00 80 01 1d 00 72 51 d0 1e 20 |.f.........rQ.. |
000000c0 6e 28 55 00 09 25 21 00 00 1e 8c 0a d0 90 20 40 |n(U..%!....... @|
000000d0 31 20 0c 40 55 00 09 25 21 00 00 18 00 00 00 00 |1 .@U..%!.......|
000000e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
000000f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ec |................|
00000100
对这个问题的任何帮助将不胜感激，我花了很多时间试图解决这个问题，到目前为止没有任何运气......
答案1
好吧，技嘉支持确实解决了这个问题
我的主板 Gigabyte GA-Z170X-Gaming 7-EU 使用 MegaChips MCDP2800 将 HDMI 2.0 引入 Intel iGPU（Skylake 不支持）
该芯片需要进行固件升级，LPCM 8 通道才能正常工作。顺便说一句，如果有人遇到同样的问题并且需要升级此固件，您需要拔下所有 PCI-E 显卡，并在 Windows 中使用显示驱动程序卸载程序在安全模式下卸载所有曾经安装的 AMD 或 NVIDIA 驱动程序！
现在它可以在 W10 或 Linux 下正常工作了:)
感谢德克的帮助！非常感谢您花时间帮助我。