1.2.5 now prefixing devices with "_ucm0001."

[GitHub issues - opened <github@xxxxxxxxxxxxxxxx>]

alsa-project/alsa-ucm-conf issue #104 was opened from craftyguy:

I'm using a ucm2 config that is not yet upstream (see [1]), and 1e6297b650114cb2e043be4c677118f971e31eb7 has caused devices to get renamed; they are now prefixed with `_ucm0001.`:

alsaucm json output from 1.2.4:

```
...
  "Verbs": {
    "HiFi": {
      "Comment": "Default",
      "Devices": {
        "Handset": {
          "Comment": "Handset",
          "ConflictingDevices": [
            "Speaker",
            "Headphones"
          ],
          "Values": {
            "CaptureCTL": "hw:L5",
            "PlaybackCTL": "hw:L5",
            "PlaybackChannels": "2",
            "PlaybackPCM": "hw:L5,0",
            "PlaybackPriority": "100",
            "PlaybackSwitch": "name='Speaker Switch'",
            "PlaybackVolume": "name='Speaker Volume'"
          }
        },
...
```


alsaucm json output from 1.2.5:

```
...
  "Verbs": {
    "HiFi": {
      "Comment": "Default",
      "Devices": {
        "Handset": {
          "Comment": "Handset",
          "ConflictingDevices": [
            "Speaker",
            "Headphones"
          ],
          "Values": {
            "CaptureCTL": "_ucm0001.hw:L5",
            "PlaybackCTL": "_ucm0001.hw:L5",
            "PlaybackChannels": "2",
            "PlaybackPCM": "_ucm0001.hw:L5,0",
            "PlaybackPriority": "100",
            "PlaybackSwitch": "name='Speaker Switch'",
            "PlaybackVolume": "name='Speaker Volume'"
          }
        },
...
```

This breaks things [like pulseaudio config](https://source.puri.sm/Librem5/librem5-base/-/blob/pureos/byzantium/default/audio/pulse/librem5.pa) that expects specific device names. Was this renaming intentional?

cc @agx

1. https://source.puri.sm/Librem5/librem5-base/-/tree/pureos/byzantium/default/audio/ucm2/Librem_5

Issue URL     : https://github.com/alsa-project/alsa-ucm-conf/issues/104
Repository URL: https://github.com/alsa-project/alsa-ucm-conf