alsa-project/alsa-ucm-conf issue #462 was edited from cybik: | Following up on | Relevant PRs | Related issues | | ------------------| ---------------- | ---------------- | | https://github.com/alsa-project/alsa-ucm-conf/issues/334 | https://github.com/alsa-project/alsa-ucm-conf/pull/461 | #434 | ### Problem statement The card "works", but there is one feature missing - though I hesitate to call it "critical": S/PDIF / TOSLINK support is incomplete. While sound works "fine" (ish), it's limited to 2 channels. * Plugging in another USB device (CM106-type, for example) gives out a plethora of configuration options (per the screenshot), though this also comes with having to select the right output * The "USB" audio outs are output-specific, which is VERY welcome, but the S/PDIF out does not allow for any advanced selection like "Supported Codecs", and the HiFi 5.1 and 7.1 do not appear to enable any IEC958/AC3 support in the background Is there something missing in the config files to allow for such support? ### Relevant files & the such * [alsa-info info dump](https://github.com/user-attachments/files/17721762/alsa-info.txt) * Screenshot of the other USB device *  Issue URL : https://github.com/alsa-project/alsa-ucm-conf/issues/462 Repository URL: https://github.com/alsa-project/alsa-ucm-conf
