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On Wed, Apr 29, 2020 at 8:25 AM Peter Humphrey <peter@××××××××××××.uk> |
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wrote: |
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> |
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> On Wednesday, 29 April 2020 10:15:09 BST Peter Humphrey wrote: |
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> |
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> > I'm still puzzled at why creating an asound.conf enabled - phonon? - to |
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pick |
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> > the right device. Alsa is not installed here, apart from alsa-lib; no |
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> > applications. |
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> |
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> Well, that was a hostage to fortune. Today, after a reboot and power |
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cycle for |
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> maintenance work, I'm back to having no sound. |
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> |
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> I suspected the devices of having been detected in the wrong order, but |
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/proc/ |
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> asound/cards seemed to be pointing to the right one. Besides, it seemed |
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> unlikely that a USB device would be found and set up before the device in |
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the |
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> display controller. |
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> |
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> Next was to blacklist all the intel* modules and reboot again. Just the |
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one |
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> card found now, the USB device. Still no sound. |
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> |
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> Have I to go the PulseAudio route after all? |
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> |
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> -- |
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> Regards, |
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> Peter. |
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Sorry for your problems. I thought we were done with this also. |
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No, I don't think you should add pulseaudio. It might be a good solution in |
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the end, if you want to have both the USB and HDMI sound paths or you just |
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want more visibility when you are using multiple sound application. (If you |
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ever do) However if you just want USB then blacklist snd_hda_intel and you |
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should have only 1 sound card, the USB device which is my understanding of |
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where you are now. |
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|
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This seems to vary from USB to USB device but does alsamixer give you any |
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control over the device? Possibly the volume is just off? |
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You can determine which card (if any in your case) is being fed audio by |
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watching different versions of the info file: |
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|
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cat /proc/asound/card1/pcm0p/info |
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That path name can vary a bit with multiple cards in the system but it you |
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only have one it's hopefully pretty close. |
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|
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When audio is not playing the last line should tell you you have a |
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subdevice available. When audio plays the subdevice being used becomes |
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unavailable. In your case I'd be interested in whether the audio is getting |
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to the USB device or going someplace else? |
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Again, sorry for your problems. |
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|
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Mark |
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