Hello, In the Message;
Subject : [Alsa-user] snd-usb-audio is having trouble recognizing the Marantz HD-AMP1 Message-ID : <[email protected]> Date & Time: Thu, 12 Feb 2026 14:30:22 +0900 [MN] == Masaru Nomiya <[email protected]> has written: [...] MN> $ inxi -A MN> Audio: MN> Device-1: NVIDIA AD106M High Definition Audio driver: N/A MN> Device-2: Advanced Micro Devices [AMD/ATI] Radeon High Definition Audio MN> [Rembrandt/Strix] driver: N/A MN> Device-3: Advanced Micro Devices [AMD] Family 17h/19h/1ah HD Audio MN> driver: N/A MN> Device-4: Generic USB Audio driver: hid-generic,snd-usb-audio,usbhid MN> type: USB MN> Device-5: D&M Holdings (Denon/Marantz) HD-AMP1 driver: snd-usb-audio MN> type: USB MN> API: ALSA v: k6.18.9-1-default status: kernel-api MN> Server-1: PipeWire v: 1.5.85 status: active (process) The root cause is this. In short, pipewire prioritizes Device-4: Generic USB Audio over Device-5: D&M Holdings (Denon/Marantz) HD-AMP1. That is; I cahnged /etc/modprobe.d/50-sound.conf as folows; options snd slots=snd-usb-audio,snd-usb-audio index=1 # fHJ1.nUBBZmosli0:USB Audio alias snd-card-0 snd-usb-audio # wn1q.DDMX92BGFe0:HD-AMP1 options snd-usb-audio index=0 alias snd-card-1 snd-usb-audio and, made the file 10-default_sink.conf in ~/.config/pipewire/pipewire.conf.d; "context.objects": [ { "factory": "metadata", "args": { "metadata.name": "my-metadata", "metadata.values": [ { "key": "default.audio.sink", "value": { "name": "HD-AMP1" } } ] } } ] then, after logging in, the following always occurs; 0 [HDAMP1 ]: USB-Audio - HD-AMP1 D&M Holdings Inc. HD-AMP1 at usb-0000:08:00.0-7, high speed 1 [U0x26ce0xa08 ]: USB-Audio - USB Device 0x26ce:0xa08 Generic USB Device 0x26ce:0xa08 at usb-0000:08:00.0-10, high speed However, unless I run `$ systemctl --user stop pipewire.service pipewire.socket`, snd-usb-audio driver will continue to hold onto the Generic USB Device. Therefore, after adding `systemctl --user stop pipewire.service pipewire.socket` and `systemctl --user start pipewire to my .bash_profile, pipewire now connects to the HD-AMP1 upon login. There might be a more elegant way, though. What remains unclear is why, with identical hardware, Linux kernel 6.18.6 and earlier required no action, while this change occurred..... Best Regards. -- ┏━━┓彡 Masaru Nomiya mail-to: nomiya @ lake.dti.ne.jp ┃＼／彡 ┗━━┛ "The AI model is not your therapist and the company behind it can't necessarily keep it secret. Sam Altman thinks that's 'very screwed up.'" -- Even OpenAI's CEO Says Be Careful What You Share With ChatGPT, Jon Reed -- _______________________________________________ Alsa-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/alsa-user
