alsa-project/alsa-lib issue #243 was opened from hlekin: I am using a setup according to https://alsa.opensrc.org/Jack_and_Loopback_device_as_Alsa-to-Jack_bridge Since the upgrade of alsa-lib, alsa-ucm-conf, and alsa-utils to version 1.2.7, my alsa-to-jack-bridge setup is broken: $ jack_connect system:capture_1 ploop:playback_1 ERROR ploop:playback_1 not a valid port A downgrade to versions 1.2.6 resolves the issue. Versions 1.2.7.1 result in the same error. The relevant output of qjackctl 0.9.7-2 > Messages is: Cannot write socket fd = 25 err = Broken pipe CheckRes error Could not write notification ClientNotify fails name = cloop notification = 0 val1 = 0 val2 = 0 NotifyAddClient old_client fails name = ploop Cannot write socket fd = 28 err = Broken pipe CheckRes error Could not write notification ClientNotify fails name = ploop notification = 1 val1 = 0 val2 = 0 ERROR ploop:playback_1 not a valid port ERROR ploop:playback_2 not a valid port ERROR cloop:capture_1 not a valid port ERROR cloop:capture_2 not a valid port Please find attached alsa-info.sh output for alsa-versions 1.2.7.1 and 1.2.6 [alsa-info.sh-output-220619.zip](https://github.com/alsa-project/alsa-lib/files/8935020/alsa-info.sh-output-220619.zip) . I am aware, that this is a very poor bug report. Please ask for any information you need! By the way, many thanks for all your programs and the effort you put in to them. Issue URL : https://github.com/alsa-project/alsa-lib/issues/243 Repository URL: https://github.com/alsa-project/alsa-lib
