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Morning all, |
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|
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The motherboard sound chip failed, so I bought a USB sound adapter [1]. |
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Problem: no sound: firefox says it isn't working and KDE sounds don't 'appear'. |
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I have all the likely-looking options set in the kernel (5.4.28), modules |
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where possible. I've read the Gentoo wiki articles on USB and audio, but they |
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didn't offer any help. |
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|
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The device uses USB-2 and I have it in a USB-2 socket. I get this on plugging it in: |
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|
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$ dmesg -Hw |
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[Apr28 09:49] usb 3-13: new full-speed USB device number 17 using xhci_hcd |
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[ +0.127080] usb 3-13: New USB device found, idVendor=0d8c, idProduct=0014, bcdDevice= 1.00 |
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[ +0.000002] usb 3-13: New USB device strings: Mfr=1, Product=2, SerialNumber=0 |
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[ +0.000002] usb 3-13: Product: USB Audio Device |
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[ +0.000001] usb 3-13: Manufacturer: C-Media Electronics Inc. |
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[ +0.007851] input: C-Media Electronics Inc. USB Audio Device as /devices/pci0000:00/0000:00:14.0/usb3/3-13/3-13:1.3/0003:0D8C:0014.000D/input/input20 |
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[ +0.051184] hid-generic 0003:0D8C:0014.000D: input,hidraw4: USB HID v1.00 Device [C-Media Electronics Inc. USB Audio Device] on usb-0000:00:14.0-13/input3 |
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|
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Some more diagnostics: |
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|
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# aplay -l |
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**** List of PLAYBACK Hardware Devices **** |
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card 0: HDMI [HDA ATI HDMI], device 3: Generic Digital [Generic Digital] |
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Subdevices: 1/1 |
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Subdevice #0: subdevice #0 |
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card 2: Device [USB Audio Device], device 0: USB Audio [USB Audio] |
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Subdevices: 1/1 |
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Subdevice #0: subdevice #0 |
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|
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# arecord -l |
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**** List of CAPTURE Hardware Devices **** |
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card 1: USB [HD Webcam USB], device 0: USB Audio [USB Audio] |
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Subdevices: 1/1 |
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Subdevice #0: subdevice #0 |
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card 2: Device [USB Audio Device], device 0: USB Audio [USB Audio] |
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Subdevices: 1/1 |
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Subdevice #0: subdevice #0 |
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|
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# lsusb -t | grep -i audio |
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|__ Port 6: Dev 3, If 2, Class=Audio, Driver=snd-usb-audio, 480M |
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|__ Port 6: Dev 3, If 3, Class=Audio, Driver=snd-usb-audio, 480M |
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|__ Port 13: Dev 17, If 0, Class=Audio, Driver=snd-usb-audio, 12M |
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|__ Port 13: Dev 17, If 1, Class=Audio, Driver=snd-usb-audio, 12M |
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|__ Port 13: Dev 17, If 2, Class=Audio, Driver=snd-usb-audio, 12M |
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|
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# lsmod | grep snd |
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snd_usb_audio 233472 0 |
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snd_hwdep 16384 1 snd_usb_audio |
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snd_usbmidi_lib 28672 1 snd_usb_audio |
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snd_rawmidi 32768 1 snd_usbmidi_lib |
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snd_seq_device 16384 1 snd_rawmidi |
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mc 40960 4 videodev,snd_usb_audio,videobuf2_v4l2,videobuf2_common |
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snd_hda_codec_generic 77824 1 |
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snd_hda_intel 28672 0 |
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snd_intel_nhlt 16384 1 snd_hda_intel |
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snd_hda_codec 122880 2 snd_hda_codec_generic,snd_hda_intel |
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snd_hda_core 73728 3 snd_hda_codec_generic,snd_hda_intel,snd_hda_codec |
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snd_pcm 98304 4 snd_hda_intel,snd_usb_audio,snd_hda_codec,snd_hda_core |
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snd_timer 32768 1 snd_pcm |
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snd 81920 10 snd_hda_codec_generic,snd_seq_device,snd_hwdep,snd_hda_i> |
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soundcore 16384 1 snd |
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|
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Why those Intel modules? The built-in Intel device is switched off in the BIOS. |
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|
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Can anyone point me in the right direction? |
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|
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1. The device is a 'Sabrent USB External Stereo Sound Adapter'; The blurb at amazon.co.uk includes Linux in its list of OSes. I bought it via https://smile.amazon.co.uk/Sabrent-External-Adapter-Windows-AU-MMSA/dp/B00IRVQ0F8/ref=sr_1_3?dchild=1&keywords=usb+sound&qid=1588065420&sr=8-3 |
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-- |
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Regards, |
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Peter. |
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