alsa-project/alsa-ucm-conf pull request #441 was opened from shumingfan: This patch allows only one input and one output to be opened simultaneously. Request URL : https://github.com/alsa-project/alsa-ucm-conf/pull/441 Patch URL : https://github.com/alsa-project/alsa-ucm-conf/pull/441.patch Repository URL: https://github.com/alsa-project/alsa-ucm-conf