How can I disable my HDMI monitor as an audio device without disabling all other monitors

avalonv · October 22, 2024, 4:50pm

I have two monitors, one connected via DP as my main, one connected as HDMI. Both are capable of playing audio. For whatever reason, both of them are listed under the same sink in the plasma-pa applet, and the HDMI one that I don’t want to use is treated as the default (see attached screenshot):
Screenshot_20241022_134438

I would like to hide the “HDMI” output (my second monitor), and only see the “HDMI 4” option (which is actually my DisplayPort monitor erroneously labelled as HDMI). I don’t see the option to do so from this window, I can only turn them both “off”. Is this possible? And if not, can I achieve something similar through the terminal?

jsalatas · October 22, 2024, 4:59pm

you can create a udev rule to disable it.

avalonv · October 22, 2024, 6:22pm

I’ve never used udev before and the examples I can find online don’t seem very applicable to my use case. Can you give me an example of how to do this?

jsalatas · October 22, 2024, 6:27pm

Just type lspci -v in a terminal and let me know the output. Then I may be able to write for you the exact rule at some time (maybe after a couple of hours or so)

avalonv · October 22, 2024, 6:43pm

Thank you. For the record, I also tried disabling it through pactl based on similar questions I found online but I could not disable the specific port, only the entire sink (much like the GUI), which includes the display I do want to use. Then I tried manually adjusting the priority for “HDMI 4” so it was higher than “HDMI” through a config file but that had no effect.

Here’s the output of lspci -v as root:

00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Root Complex
	Subsystem: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Root Complex
	Flags: fast devsel

00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge
	Flags: fast devsel

00:01.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse GPP Bridge (prog-if 00 [Normal decode])
	Subsystem: Advanced Micro Devices, Inc. [AMD] Device 1234
	Flags: bus master, fast devsel, latency 0, IRQ 26
	Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
	I/O behind bridge: [disabled] [32-bit]
	Memory behind bridge: fcf00000-fcffffff [size=1M] [32-bit]
	Prefetchable memory behind bridge: [disabled] [64-bit]
	Capabilities: [50] Power Management version 3
	Capabilities: [58] Express Root Port (Slot+), IntMsgNum 0
	Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
	Capabilities: [c0] Subsystem: Advanced Micro Devices, Inc. [AMD] Device 1234
	Capabilities: [c8] HyperTransport: MSI Mapping Enable+ Fixed+
	Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
	Capabilities: [150] Advanced Error Reporting
	Capabilities: [270] Secondary PCI Express
	Capabilities: [370] L1 PM Substates
	Capabilities: [3c4] Designated Vendor-Specific: Vendor=1022 ID=0001 Rev=1 Len=44 <?>
	Capabilities: [400] Data Link Feature <?>
	Capabilities: [410] Physical Layer 16.0 GT/s <?>
	Capabilities: [440] Lane Margining at the Receiver
	Kernel driver in use: pcieport

00:01.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse GPP Bridge (prog-if 00 [Normal decode])
	Subsystem: Advanced Micro Devices, Inc. [AMD] Device 1234
	Flags: bus master, fast devsel, latency 0, IRQ 27
	Bus: primary=00, secondary=02, subordinate=08, sec-latency=0
	I/O behind bridge: f000-ffff [size=4K] [16-bit]
	Memory behind bridge: fcd00000-fcefffff [size=2M] [32-bit]
	Prefetchable memory behind bridge: [disabled] [64-bit]
	Capabilities: [50] Power Management version 3
	Capabilities: [58] Express Root Port (Slot+), IntMsgNum 0
	Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
	Capabilities: [c0] Subsystem: Advanced Micro Devices, Inc. [AMD] Device 1234
	Capabilities: [c8] HyperTransport: MSI Mapping Enable+ Fixed+
	Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
	Capabilities: [150] Advanced Error Reporting
	Capabilities: [270] Secondary PCI Express
	Capabilities: [370] L1 PM Substates
	Capabilities: [3c4] Designated Vendor-Specific: Vendor=1022 ID=0001 Rev=1 Len=44 <?>
	Capabilities: [400] Data Link Feature <?>
	Capabilities: [410] Physical Layer 16.0 GT/s <?>
	Capabilities: [440] Lane Margining at the Receiver
	Kernel driver in use: pcieport

00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge
	Flags: fast devsel

00:03.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge
	Flags: fast devsel

00:03.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse GPP Bridge (prog-if 00 [Normal decode])
	Subsystem: Advanced Micro Devices, Inc. [AMD] Device 1234
	Flags: bus master, fast devsel, latency 0, IRQ 28
	Bus: primary=00, secondary=09, subordinate=0b, sec-latency=0
	I/O behind bridge: e000-efff [size=4K] [16-bit]
	Memory behind bridge: fca00000-fccfffff [size=3M] [32-bit]
	Prefetchable memory behind bridge: 900000000-bffffffff [size=12G] [32-bit]
	Capabilities: [50] Power Management version 3
	Capabilities: [58] Express Root Port (Slot+), IntMsgNum 0
	Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
	Capabilities: [c0] Subsystem: Advanced Micro Devices, Inc. [AMD] Device 1234
	Capabilities: [c8] HyperTransport: MSI Mapping Enable+ Fixed+
	Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
	Capabilities: [150] Advanced Error Reporting
	Capabilities: [270] Secondary PCI Express
	Capabilities: [370] L1 PM Substates
	Capabilities: [3c4] Designated Vendor-Specific: Vendor=1022 ID=0001 Rev=1 Len=44 <?>
	Capabilities: [400] Data Link Feature <?>
	Capabilities: [410] Physical Layer 16.0 GT/s <?>
	Capabilities: [440] Lane Margining at the Receiver
	Kernel driver in use: pcieport

00:04.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge
	Flags: fast devsel

00:05.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge
	Flags: fast devsel

00:07.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge
	Flags: fast devsel

00:07.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Internal PCIe GPP Bridge 0 to bus[E:B] (prog-if 00 [Normal decode])
	Subsystem: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Internal PCIe GPP Bridge 0 to bus[E:B]
	Flags: bus master, fast devsel, latency 0, IRQ 30
	Bus: primary=00, secondary=0c, subordinate=0c, sec-latency=0
	I/O behind bridge: [disabled] [32-bit]
	Memory behind bridge: [disabled] [32-bit]
	Prefetchable memory behind bridge: [disabled] [64-bit]
	Capabilities: [50] Power Management version 3
	Capabilities: [58] Express Root Port (Slot-), IntMsgNum 0
	Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
	Capabilities: [c0] Subsystem: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Internal PCIe GPP Bridge 0 to bus[E:B]
	Capabilities: [c8] HyperTransport: MSI Mapping Enable+ Fixed+
	Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
	Capabilities: [150] Advanced Error Reporting
	Capabilities: [270] Secondary PCI Express
	Capabilities: [2a0] Access Control Services
	Capabilities: [400] Data Link Feature <?>
	Capabilities: [410] Physical Layer 16.0 GT/s <?>
	Capabilities: [440] Lane Margining at the Receiver
	Kernel driver in use: pcieport

00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Host Bridge
	Flags: fast devsel

00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Internal PCIe GPP Bridge 0 to bus[E:B] (prog-if 00 [Normal decode])
	Subsystem: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Internal PCIe GPP Bridge 0 to bus[E:B]
	Flags: bus master, fast devsel, latency 0, IRQ 31
	Bus: primary=00, secondary=0d, subordinate=0d, sec-latency=0
	I/O behind bridge: [disabled] [32-bit]
	Memory behind bridge: fc700000-fc9fffff [size=3M] [32-bit]
	Prefetchable memory behind bridge: [disabled] [64-bit]
	Capabilities: [50] Power Management version 3
	Capabilities: [58] Express Root Port (Slot-), IntMsgNum 0
	Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
	Capabilities: [c0] Subsystem: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Internal PCIe GPP Bridge 0 to bus[E:B]
	Capabilities: [c8] HyperTransport: MSI Mapping Enable+ Fixed+
	Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
	Capabilities: [150] Advanced Error Reporting
	Capabilities: [270] Secondary PCI Express
	Capabilities: [2a0] Access Control Services
	Capabilities: [400] Data Link Feature <?>
	Capabilities: [410] Physical Layer 16.0 GT/s <?>
	Capabilities: [440] Lane Margining at the Receiver
	Kernel driver in use: pcieport

00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 61)
	Subsystem: ASRock Incorporation Device ffff
	Flags: 66MHz, medium devsel
	Kernel driver in use: piix4_smbus
	Kernel modules: i2c_piix4, sp5100_tco

00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51)
	Subsystem: ASRock Incorporation Device ffff
	Flags: bus master, 66MHz, medium devsel, latency 0

00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Matisse/Vermeer Data Fabric: Device 18h; Function 0
	Flags: fast devsel

00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Matisse/Vermeer Data Fabric: Device 18h; Function 1
	Flags: fast devsel

00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Matisse/Vermeer Data Fabric: Device 18h; Function 2
	Flags: fast devsel

00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Matisse/Vermeer Data Fabric: Device 18h; Function 3
	Flags: fast devsel
	Kernel driver in use: k10temp
	Kernel modules: k10temp

00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Matisse/Vermeer Data Fabric: Device 18h; Function 4
	Flags: fast devsel

00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Matisse/Vermeer Data Fabric: Device 18h; Function 5
	Flags: fast devsel

00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Matisse/Vermeer Data Fabric: Device 18h; Function 6
	Flags: fast devsel

00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Matisse/Vermeer Data Fabric: Device 18h; Function 7
	Flags: fast devsel

01:00.0 Non-Volatile memory controller: Kingston Technology Company, Inc. NV2 NVMe SSD SM2267XT (DRAM-less) (rev 03) (prog-if 02 [NVM Express])
	Subsystem: Kingston Technology Company, Inc. NV2 NVMe SSD SM2267XT (DRAM-less)
	Flags: bus master, fast devsel, latency 0, IRQ 42
	Memory at fcf00000 (64-bit, non-prefetchable) [size=16K]
	Capabilities: [40] Power Management version 3
	Capabilities: [50] MSI: Enable- Count=1/8 Maskable+ 64bit+
	Capabilities: [70] Express Endpoint, IntMsgNum 0
	Capabilities: [b0] MSI-X: Enable+ Count=16 Masked-
	Capabilities: [100] Advanced Error Reporting
	Capabilities: [158] Secondary PCI Express
	Capabilities: [178] Physical Layer 16.0 GT/s <?>
	Capabilities: [19c] Lane Margining at the Receiver
	Capabilities: [1b4] Latency Tolerance Reporting
	Kernel driver in use: nvme
	Kernel modules: nvme

02:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset USB 3.1 xHCI Compliant Host Controller (rev 01) (prog-if 30 [XHCI])
	Subsystem: ASMedia Technology Inc. Device 1142
	Flags: bus master, fast devsel, latency 0, IRQ 32
	Memory at fcea0000 (64-bit, non-prefetchable) [size=32K]
	Capabilities: [50] MSI: Enable- Count=1/8 Maskable- 64bit+
	Capabilities: [68] MSI-X: Enable+ Count=8 Masked-
	Capabilities: [78] Power Management version 3
	Capabilities: [80] Express Legacy Endpoint, IntMsgNum 0
	Capabilities: [100] Advanced Error Reporting
	Capabilities: [200] Secondary PCI Express
	Capabilities: [300] Latency Tolerance Reporting
	Capabilities: [400] L1 PM Substates
	Kernel driver in use: xhci_hcd
	Kernel modules: xhci_pci

02:00.1 SATA controller: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset SATA Controller (rev 01) (prog-if 01 [AHCI 1.0])
	Subsystem: ASMedia Technology Inc. Device 1062
	Flags: bus master, fast devsel, latency 0, IRQ 41
	Memory at fce80000 (32-bit, non-prefetchable) [size=128K]
	Expansion ROM at fce00000 [disabled] [size=512K]
	Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
	Capabilities: [78] Power Management version 3
	Capabilities: [80] Express Legacy Endpoint, IntMsgNum 0
	Capabilities: [100] Advanced Error Reporting
	Kernel driver in use: ahci

02:00.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe Bridge (rev 01) (prog-if 00 [Normal decode])
	Subsystem: ASMedia Technology Inc. Device 0201
	Flags: bus master, fast devsel, latency 0, IRQ 29
	Bus: primary=02, secondary=03, subordinate=08, sec-latency=0
	I/O behind bridge: f000-ffff [size=4K] [16-bit]
	Memory behind bridge: fcd00000-fcdfffff [size=1M] [32-bit]
	Prefetchable memory behind bridge: [disabled] [64-bit]
	Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+
	Capabilities: [78] Power Management version 3
	Capabilities: [80] Express Upstream Port, IntMsgNum 0
	Capabilities: [c0] Subsystem: ASMedia Technology Inc. Device 0201
	Capabilities: [100] Advanced Error Reporting
	Kernel driver in use: pcieport

03:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe Port (rev 01) (prog-if 00 [Normal decode])
	Subsystem: ASMedia Technology Inc. Device 3306
	Flags: bus master, fast devsel, latency 0, IRQ 33
	Bus: primary=03, secondary=04, subordinate=04, sec-latency=0
	I/O behind bridge: [disabled] [32-bit]
	Memory behind bridge: [disabled] [32-bit]
	Prefetchable memory behind bridge: [disabled] [64-bit]
	Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
	Capabilities: [78] Power Management version 3
	Capabilities: [80] Express Downstream Port (Slot+), IntMsgNum 0
	Capabilities: [c0] Subsystem: ASMedia Technology Inc. Device 3306
	Capabilities: [100] Advanced Error Reporting
	Capabilities: [200] Secondary PCI Express
	Capabilities: [400] L1 PM Substates
	Kernel driver in use: pcieport

03:01.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe Port (rev 01) (prog-if 00 [Normal decode])
	Subsystem: ASMedia Technology Inc. Device 3306
	Flags: bus master, fast devsel, latency 0, IRQ 35
	Bus: primary=03, secondary=05, subordinate=05, sec-latency=0
	I/O behind bridge: [disabled] [32-bit]
	Memory behind bridge: [disabled] [32-bit]
	Prefetchable memory behind bridge: [disabled] [64-bit]
	Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
	Capabilities: [78] Power Management version 3
	Capabilities: [80] Express Downstream Port (Slot+), IntMsgNum 0
	Capabilities: [c0] Subsystem: ASMedia Technology Inc. Device 3306
	Capabilities: [100] Advanced Error Reporting
	Capabilities: [200] Secondary PCI Express
	Capabilities: [400] L1 PM Substates
	Kernel driver in use: pcieport

03:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe Port (rev 01) (prog-if 00 [Normal decode])
	Subsystem: ASMedia Technology Inc. Device 3306
	Flags: bus master, fast devsel, latency 0, IRQ 36
	Bus: primary=03, secondary=06, subordinate=06, sec-latency=0
	I/O behind bridge: [disabled] [32-bit]
	Memory behind bridge: [disabled] [32-bit]
	Prefetchable memory behind bridge: [disabled] [64-bit]
	Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
	Capabilities: [78] Power Management version 3
	Capabilities: [80] Express Downstream Port (Slot+), IntMsgNum 0
	Capabilities: [c0] Subsystem: ASMedia Technology Inc. Device 3306
	Capabilities: [100] Advanced Error Reporting
	Capabilities: [200] Secondary PCI Express
	Capabilities: [400] L1 PM Substates
	Kernel driver in use: pcieport

03:06.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe Port (rev 01) (prog-if 00 [Normal decode])
	Subsystem: ASMedia Technology Inc. Device 3306
	Flags: bus master, fast devsel, latency 0, IRQ 37
	Bus: primary=03, secondary=07, subordinate=07, sec-latency=0
	I/O behind bridge: [disabled] [32-bit]
	Memory behind bridge: [disabled] [32-bit]
	Prefetchable memory behind bridge: [disabled] [64-bit]
	Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
	Capabilities: [78] Power Management version 3
	Capabilities: [80] Express Downstream Port (Slot+), IntMsgNum 0
	Capabilities: [c0] Subsystem: ASMedia Technology Inc. Device 3306
	Capabilities: [100] Advanced Error Reporting
	Capabilities: [200] Secondary PCI Express
	Capabilities: [400] L1 PM Substates
	Kernel driver in use: pcieport

03:07.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 400 Series Chipset PCIe Port (rev 01) (prog-if 00 [Normal decode])
	Subsystem: ASMedia Technology Inc. Device 3306
	Flags: bus master, fast devsel, latency 0, IRQ 38
	Bus: primary=03, secondary=08, subordinate=08, sec-latency=0
	I/O behind bridge: f000-ffff [size=4K] [16-bit]
	Memory behind bridge: fcd00000-fcdfffff [size=1M] [32-bit]
	Prefetchable memory behind bridge: [disabled] [64-bit]
	Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
	Capabilities: [78] Power Management version 3
	Capabilities: [80] Express Downstream Port (Slot+), IntMsgNum 0
	Capabilities: [c0] Subsystem: ASMedia Technology Inc. Device 3306
	Capabilities: [100] Advanced Error Reporting
	Capabilities: [200] Secondary PCI Express
	Capabilities: [400] L1 PM Substates
	Kernel driver in use: pcieport

08:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet Controller (rev 15)
	Subsystem: ASRock Incorporation Motherboard (one of many)
	Flags: bus master, fast devsel, latency 0, IRQ 24
	I/O ports at f000 [size=256]
	Memory at fcd04000 (64-bit, non-prefetchable) [size=4K]
	Memory at fcd00000 (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, IntMsgNum 1
	Capabilities: [b0] MSI-X: Enable+ Count=4 Masked-
	Capabilities: [100] Advanced Error Reporting
	Capabilities: [140] Virtual Channel
	Capabilities: [160] Device Serial Number 68-53-43-59-a1-a8-00-00
	Capabilities: [170] Latency Tolerance Reporting
	Capabilities: [178] L1 PM Substates
	Kernel driver in use: r8169
	Kernel modules: r8169

09:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 XL Upstream Port of PCI Express Switch (rev c7) (prog-if 00 [Normal decode])
	Flags: bus master, fast devsel, latency 0, IRQ 39
	Memory at fcc00000 (32-bit, non-prefetchable) [size=16K]
	Bus: primary=09, secondary=0a, subordinate=0b, sec-latency=0
	I/O behind bridge: e000-efff [size=4K] [16-bit]
	Memory behind bridge: fca00000-fcbfffff [size=2M] [32-bit]
	Prefetchable memory behind bridge: 900000000-bffffffff [size=12G] [32-bit]
	Capabilities: [48] Vendor Specific Information: Len=08 <?>
	Capabilities: [50] Power Management version 3
	Capabilities: [58] Express Upstream Port, IntMsgNum 0
	Capabilities: [a0] MSI: Enable- Count=1/1 Maskable- 64bit+
	Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
	Capabilities: [150] Advanced Error Reporting
	Capabilities: [270] Secondary PCI Express
	Capabilities: [320] Latency Tolerance Reporting
	Capabilities: [400] Data Link Feature <?>
	Capabilities: [410] Physical Layer 16.0 GT/s <?>
	Capabilities: [440] Lane Margining at the Receiver
	Kernel driver in use: pcieport

0a:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 XL Downstream Port of PCI Express Switch (prog-if 00 [Normal decode])
	Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 XL Downstream Port of PCI Express Switch
	Flags: bus master, fast devsel, latency 0, IRQ 40
	Bus: primary=0a, secondary=0b, subordinate=0b, sec-latency=0
	I/O behind bridge: e000-efff [size=4K] [16-bit]
	Memory behind bridge: fca00000-fcbfffff [size=2M] [32-bit]
	Prefetchable memory behind bridge: 900000000-bffffffff [size=12G] [32-bit]
	Capabilities: [50] Power Management version 3
	Capabilities: [58] Express Downstream Port (Slot-), IntMsgNum 0
	Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
	Capabilities: [c0] Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 XL Downstream Port of PCI Express Switch
	Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
	Capabilities: [150] Advanced Error Reporting
	Capabilities: [270] Secondary PCI Express
	Capabilities: [2a0] Access Control Services
	Capabilities: [400] Data Link Feature <?>
	Capabilities: [410] Physical Layer 16.0 GT/s <?>
	Capabilities: [440] Lane Margining at the Receiver
	Kernel driver in use: pcieport

0b:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Navi 23 [Radeon RX 6600/6600 XT/6600M] (rev c7) (prog-if 00 [VGA controller])
	Subsystem: Micro-Star International Co., Ltd. [MSI] RX 6600 MECH 2X
	Flags: bus master, fast devsel, latency 0, IRQ 69
	Memory at a00000000 (64-bit, prefetchable) [size=8G]
	Memory at 900000000 (64-bit, prefetchable) [size=2M]
	I/O ports at e000 [size=256]
	Memory at fca00000 (32-bit, non-prefetchable) [size=1M]
	Expansion ROM at fcb00000 [disabled] [size=128K]
	Capabilities: [48] Vendor Specific Information: Len=08 <?>
	Capabilities: [50] Power Management version 3
	Capabilities: [64] Express Legacy Endpoint, IntMsgNum 0
	Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
	Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
	Capabilities: [150] Advanced Error Reporting
	Capabilities: [200] Physical Resizable BAR
	Capabilities: [240] Power Budgeting <?>
	Capabilities: [270] Secondary PCI Express
	Capabilities: [2a0] Access Control Services
	Capabilities: [2d0] Process Address Space ID (PASID)
	Capabilities: [320] Latency Tolerance Reporting
	Capabilities: [410] Physical Layer 16.0 GT/s <?>
	Capabilities: [440] Lane Margining at the Receiver
	Kernel driver in use: amdgpu
	Kernel modules: amdgpu

0b:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Navi 21/23 HDMI/DP Audio Controller
	Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Navi 21/23 HDMI/DP Audio Controller
	Flags: bus master, fast devsel, latency 0, IRQ 75
	Memory at fcb20000 (32-bit, non-prefetchable) [size=16K]
	Capabilities: [48] Vendor Specific Information: Len=08 <?>
	Capabilities: [50] Power Management version 3
	Capabilities: [64] Express Legacy Endpoint, IntMsgNum 0
	Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
	Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
	Capabilities: [150] Advanced Error Reporting
	Capabilities: [2a0] Access Control Services
	Kernel driver in use: snd_hda_intel
	Kernel modules: snd_hda_intel

0c:00.0 Non-Essential Instrumentation [1300]: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Function
	Subsystem: Advanced Micro Devices, Inc. [AMD] Starship/Matisse PCIe Dummy Function
	Flags: fast devsel
	Capabilities: [48] Vendor Specific Information: Len=08 <?>
	Capabilities: [50] Power Management version 3
	Capabilities: [64] Express Endpoint, IntMsgNum 0
	Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
	Capabilities: [150] Advanced Error Reporting
	Capabilities: [270] Secondary PCI Express
	Capabilities: [2a0] Access Control Services
	Capabilities: [400] Data Link Feature <?>
	Capabilities: [410] Physical Layer 16.0 GT/s <?>
	Capabilities: [440] Lane Margining at the Receiver

0d:00.0 Non-Essential Instrumentation [1300]: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Reserved SPP
	Subsystem: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Reserved SPP
	Flags: fast devsel
	Capabilities: [48] Vendor Specific Information: Len=08 <?>
	Capabilities: [50] Power Management version 3
	Capabilities: [64] Express Endpoint, IntMsgNum 0
	Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
	Capabilities: [150] Advanced Error Reporting
	Capabilities: [270] Secondary PCI Express
	Capabilities: [2a0] Access Control Services
	Capabilities: [400] Data Link Feature <?>
	Capabilities: [410] Physical Layer 16.0 GT/s <?>
	Capabilities: [440] Lane Margining at the Receiver

0d:00.1 Encryption controller: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Cryptographic Coprocessor PSPCPP
	Subsystem: Advanced Micro Devices, Inc. [AMD] Starship/Matisse Cryptographic Coprocessor PSPCPP
	Flags: bus master, fast devsel, latency 0, IRQ 70
	Memory at fc800000 (32-bit, non-prefetchable) [size=1M]
	Memory at fc908000 (32-bit, non-prefetchable) [size=8K]
	Capabilities: [48] Vendor Specific Information: Len=08 <?>
	Capabilities: [50] Power Management version 3
	Capabilities: [64] Express Endpoint, IntMsgNum 0
	Capabilities: [a0] MSI: Enable- Count=1/1 Maskable- 64bit+
	Capabilities: [c0] MSI-X: Enable+ Count=2 Masked-
	Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
	Capabilities: [150] Advanced Error Reporting
	Capabilities: [2a0] Access Control Services
	Capabilities: [370] Transaction Processing Hints
	Kernel driver in use: ccp
	Kernel modules: ccp

0d:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Matisse USB 3.0 Host Controller (prog-if 30 [XHCI])
	Subsystem: ASRock Incorporation Device ffff
	Flags: bus master, fast devsel, latency 0, IRQ 60
	Memory at fc700000 (64-bit, non-prefetchable) [size=1M]
	Capabilities: [48] Vendor Specific Information: Len=08 <?>
	Capabilities: [50] Power Management version 3
	Capabilities: [64] Express Endpoint, IntMsgNum 0
	Capabilities: [a0] MSI: Enable- Count=1/8 Maskable- 64bit+
	Capabilities: [c0] MSI-X: Enable+ Count=8 Masked-
	Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
	Capabilities: [150] Advanced Error Reporting
	Capabilities: [2a0] Access Control Services
	Capabilities: [370] Transaction Processing Hints
	Kernel driver in use: xhci_hcd
	Kernel modules: xhci_pci

0d:00.4 Audio device: Advanced Micro Devices, Inc. [AMD] Starship/Matisse HD Audio Controller
	Subsystem: ASRock Incorporation Device d887
	Flags: bus master, fast devsel, latency 0, IRQ 77
	Memory at fc900000 (32-bit, non-prefetchable) [size=32K]
	Capabilities: [48] Vendor Specific Information: Len=08 <?>
	Capabilities: [50] Power Management version 3
	Capabilities: [64] Express Endpoint, IntMsgNum 0
	Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
	Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
	Capabilities: [150] Advanced Error Reporting
	Capabilities: [2a0] Access Control Services
	Capabilities: [370] Transaction Processing Hints
	Kernel driver in use: snd_hda_intel
	Kernel modules: snd_hda_intel

jsalatas · October 22, 2024, 7:10pm

Hmmm… it’s not what I expected to see (I had the wrong impression I guess). I get it now: it’s a single HDMI device with multiple outputs. And you also have a third device using the same driver. And I guess you need to disable the one of the three outputs.

Try the following

Create a file named snd_hda.conf in /etc/modprobe.d/ with the following contents


options snd_hda_intel enable=1,1,0

and reboot

it should disable one of the outputs. If it disables the wrong one then try other combinations like

options snd_hda_intel enable=1,0,1

or

options snd_hda_intel enable=0,1,1

etc., until the correct one is disabled. I hope you get it.

I’m just guessing here, and I’m describing what I would have tried in a similar situation in the hope that it works. If it doesn’t work at all, just remember to remove that file.