我有一台 HP 14 笔记本电脑，配备 Intel® Core™ i3-4005U CPU @ 1.70GHz × 4 处理器，我最近在上面安装了 Ubuntu 20.04.1 LTS。我遇到的问题是，当通过 HDMI 连接外部电视时，它突然停止向电视发送音频。我执行了常规的设置 > 声音 > 输出设备 > HDMI / DisplayPort - 内置音频，但在运行任何音频或甚至使用测试选项时，都没有音频输出。
我已经尝试过提出的解决方案Ubuntu 20.04 LTS HDMI 上没有声音没有运气。
跑步
rm -r ~/.config/pulse/
reboot
或者
killall pulseaudio; rm -rf ~/.config/pulse/* ; rm -rf ~/.pulse*
我尝试了几根 HDMI 线缆，并用 PS3 测试了电视上的几根端口，它们都运行正常。
对于 PC，再次从头重新安装 Ubuntu，并搜索 BIOS 是否有任何 HDMI 或音频配置选项，但都对我有帮助。
这是运行时的输出sudo lspci -v && lsmod | grep snd：
00:00.0 Host bridge: Intel Corporation Haswell-ULT DRAM Controller (rev 0b)
Subsystem: Hewlett-Packard Company Haswell-ULT DRAM Controller
Flags: bus master, fast devsel, latency 0
Capabilities: [e0] Vendor Specific Information: Len=0c <?>
Kernel driver in use: hsw_uncore
00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 0b) (prog-if 00 [VGA controller])
Subsystem: Hewlett-Packard Company Haswell-ULT Integrated Graphics Controller
Flags: bus master, fast devsel, latency 0, IRQ 49
Memory at b2000000 (64-bit, non-prefetchable) [size=4M]
Memory at a0000000 (64-bit, prefetchable) [size=256M]
I/O ports at 6000 [size=64]
Expansion ROM at 000c0000 [virtual] [disabled] [size=128K]
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [a4] PCI Advanced Features
Kernel driver in use: i915
Kernel modules: i915
00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev 0b)
Subsystem: Hewlett-Packard Company Haswell-ULT HD Audio Controller
Flags: bus master, fast devsel, latency 0, IRQ 50
Memory at b2710000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
00:14.0 USB controller: Intel Corporation 8 Series USB xHCI HC (rev 04) (prog-if 30 [XHCI])
Subsystem: Hewlett-Packard Company 8 Series USB xHCI HC
Flags: bus master, medium devsel, latency 0, IRQ 44
Memory at b2700000 (64-bit, non-prefetchable) [size=64K]
Capabilities: [70] Power Management version 2
Capabilities: [80] MSI: Enable+ Count=1/8 Maskable- 64bit+
Kernel driver in use: xhci_hcd
00:16.0 Communication controller: Intel Corporation 8 Series HECI #0 (rev 04)
Subsystem: Hewlett-Packard Company 8 Series HECI
Flags: bus master, fast devsel, latency 0, IRQ 48
Memory at b2718000 (64-bit, non-prefetchable) [size=32]
Capabilities: [50] Power Management version 3
Capabilities: [8c] MSI: Enable+ Count=1/1 Maskable- 64bit+
Kernel driver in use: mei_me
Kernel modules: mei_me
00:1b.0 Audio device: Intel Corporation 8 Series HD Audio Controller (rev 04)
Subsystem: Hewlett-Packard Company 8 Series HD Audio Controller
Flags: bus master, fast devsel, latency 0, IRQ 51
Memory at b2714000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 3
Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Capabilities: [100] Virtual Channel
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
00:1c.0 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 1 (rev e4) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0, IRQ 40
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 00002000-00002fff [size=4K]
Memory behind bridge: 9fb00000-9fcfffff [size=2M]
Prefetchable memory behind bridge: 000000009fd00000-000000009fefffff [size=2M]
Capabilities: [40] Express Root Port (Slot+), MSI 00
Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [90] Subsystem: Hewlett-Packard Company 8 Series PCI Express Root Port 1
Capabilities: [a0] Power Management version 3
Kernel driver in use: pcieport
00:1c.1 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 2 (rev e4) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0, IRQ 41
Bus: primary=00, secondary=02, subordinate=07, sec-latency=0
I/O behind bridge: 00005000-00005fff [size=4K]
Memory behind bridge: b1000000-b1ffffff [size=16M]
Prefetchable memory behind bridge: 00000000b0000000-00000000b0ffffff [size=16M]
Capabilities: [40] Express Root Port (Slot+), MSI 00
Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [90] Subsystem: Hewlett-Packard Company 8 Series PCI Express Root Port 2
Capabilities: [a0] Power Management version 3
Capabilities: [100] Null
Capabilities: [200] L1 PM Substates
Kernel driver in use: pcieport
00:1c.2 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 3 (rev e4) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0, IRQ 42
Bus: primary=00, secondary=08, subordinate=08, sec-latency=0
I/O behind bridge: 00004000-00004fff [size=4K]
Memory behind bridge: b2600000-b26fffff [size=1M]
Prefetchable memory behind bridge: 00000000b2400000-00000000b24fffff [size=1M]
Capabilities: [40] Express Root Port (Slot+), MSI 00
Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [90] Subsystem: Hewlett-Packard Company 8 Series PCI Express Root Port 3
Capabilities: [a0] Power Management version 3
Capabilities: [100] Null
Capabilities: [200] L1 PM Substates
Kernel driver in use: pcieport
00:1c.5 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 6 (rev e4) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0, IRQ 43
Bus: primary=00, secondary=09, subordinate=09, sec-latency=0
I/O behind bridge: 00003000-00003fff [size=4K]
Memory behind bridge: b2500000-b25fffff [size=1M]
Prefetchable memory behind bridge: [disabled]
Capabilities: [40] Express Root Port (Slot+), MSI 00
Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [90] Subsystem: Hewlett-Packard Company 8 Series PCI Express Root Port 6
Capabilities: [a0] Power Management version 3
Capabilities: [100] Null
Capabilities: [200] L1 PM Substates
Kernel driver in use: pcieport
00:1d.0 USB controller: Intel Corporation 8 Series USB EHCI #1 (rev 04) (prog-if 20 [EHCI])
Subsystem: Hewlett-Packard Company 8 Series USB EHCI
Flags: bus master, medium devsel, latency 0, IRQ 23
Memory at b271c000 (32-bit, non-prefetchable) [size=1K]
Capabilities: [50] Power Management version 3
Capabilities: [58] Debug port: BAR=1 offset=00a0
Capabilities: [98] PCI Advanced Features
Kernel driver in use: ehci-pci
00:1f.0 ISA bridge: Intel Corporation 8 Series LPC Controller (rev 04)
Subsystem: Hewlett-Packard Company 8 Series LPC Controller
Flags: bus master, medium devsel, latency 0
Capabilities: [e0] Vendor Specific Information: Len=0c <?>
Kernel driver in use: lpc_ich
Kernel modules: lpc_ich
00:1f.2 SATA controller: Intel Corporation 8 Series SATA Controller 1 [AHCI mode] (rev 04) (prog-if 01 [AHCI 1.0])
Subsystem: Hewlett-Packard Company 8 Series SATA Controller 1 [AHCI mode]
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 45
I/O ports at 6088 [size=8]
I/O ports at 6094 [size=4]
I/O ports at 6080 [size=8]
I/O ports at 6090 [size=4]
I/O ports at 6060 [size=32]
Memory at b271b000 (32-bit, non-prefetchable) [size=2K]
Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [70] Power Management version 3
Capabilities: [a8] SATA HBA v1.0
Kernel driver in use: ahci
Kernel modules: ahci
00:1f.3 SMBus: Intel Corporation 8 Series SMBus Controller (rev 04)
Subsystem: Hewlett-Packard Company 8 Series SMBus Controller
Flags: medium devsel, IRQ 18
Memory at b2719000 (64-bit, non-prefetchable) [size=256]
I/O ports at 6040 [size=32]
Kernel driver in use: i801_smbus
Kernel modules: i2c_i801
02:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5229 PCI Express Card Reader (rev 01)
Subsystem: Hewlett-Packard Company RTS5229 PCI Express Card Reader
Flags: bus master, fast devsel, latency 0, IRQ 47
Memory at b1000000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Device Serial Number 00-00-00-01-00-4c-e0-00
Kernel driver in use: rtsx_pci
Kernel modules: rtsx_pci
08:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL810xE PCI Express Fast Ethernet controller (rev 07)
Subsystem: Hewlett-Packard Company RTL810xE PCI Express Fast Ethernet controller
Flags: bus master, fast devsel, latency 0, IRQ 18
I/O ports at 4000 [size=256]
Memory at b2600000 (64-bit, non-prefetchable) [size=4K]
Memory at b2400000 (64-bit, prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Endpoint, MSI 01
Capabilities: [b0] MSI-X: Enable+ Count=4 Masked-
Capabilities: [d0] Vital Product Data
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Virtual Channel
Capabilities: [160] Device Serial Number 01-00-00-00-36-4c-e0-00
Capabilities: [170] Latency Tolerance Reporting
Kernel driver in use: r8169
Kernel modules: r8169
09:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter
DeviceName: Skyray
Subsystem: Hewlett-Packard Company RTL8723BE PCIe Wireless Network Adapter
Flags: bus master, fast devsel, latency 0, IRQ 16
I/O ports at 3000 [size=256]
Memory at b2500000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Device Serial Number 00-23-b7-fe-ff-4c-e0-00
Capabilities: [150] Latency Tolerance Reporting
Capabilities: [158] L1 PM Substates
Kernel driver in use: rtl8723be
Kernel modules: rtl8723be
snd_hda_codec_realtek 126976 1
snd_hda_codec_generic 81920 1 snd_hda_codec_realtek
ledtrig_audio 16384 2 snd_hda_codec_generic,snd_hda_codec_realtek
snd_hda_codec_hdmi 61440 1
snd_hda_intel 53248 8
snd_intel_dspcfg 24576 1 snd_hda_intel
snd_hda_codec 135168 4 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek
snd_hda_core 90112 5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek
snd_hwdep 20480 1 snd_hda_codec
snd_pcm 106496 6 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_core
snd_seq_midi 20480 0
snd_seq_midi_event 16384 1 snd_seq_midi
snd_rawmidi 36864 1 snd_seq_midi
snd_seq 69632 2 snd_seq_midi,snd_seq_midi_event
snd_seq_device 16384 3 snd_seq,snd_seq_midi,snd_rawmidi
snd_timer 36864 2 snd_seq,snd_pcm
snd 90112 25 snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_pcm,snd_rawmidi
soundcore 16384 1 snd
我真的非常感谢您能给我的任何帮助，因为我对 Ubuntu 世界还比较陌生，而且我完全没有任何想法！