alsa-project/alsa-ucm-conf issue #424 was opened from DeepHarsora-Dell: Installed Fedora Rawhide on Dell Latitude 7350 Detachable resulting in no-audio output from onboard speaker and in-built mic (DMIC) can't be detected. Updated the SUT with the following 1. Topology built rightly. 2. Noticed proper SOF Machine driver in upstream as on v.6.10-rc1, able to load the topology. 3. Updated the UCM2 config files as per [[ALSA_UCM_README]](https://github.com/alsa-project/alsa-ucm-conf/blob/master/README.md) Below is the error found while alsaucm reload [linuxengg@fedora ~]$ sudo alsaucm reload ALSA lib ucm_subs.c:807:(uc_mgr_get_substituted_value) variable '${var:__RegEx}' is not defined in this context! ALSA lib parser.c:2024:(parse_verb_file) error: /sof-soundwire/HiFi.conf failed to parse device ALSA lib main.c:1554:(snd_use_case_mgr_open) error: failed to import hw:0 use case configuration -22 alsaucm: error failed to open sound card hw:0: Invalid argument Issue URL : https://github.com/alsa-project/alsa-ucm-conf/issues/424 Repository URL: https://github.com/alsa-project/alsa-ucm-conf
