alsa-project/alsa-utils issue #101 was edited from nmeum:

Starting with alsa-utils 1.2.5 I observed the following warning on my machine when running `alsactl restore 0`, which I didn't receive prevously with alsa-utils 1.2.4:

``` $ alsactl -E 'HOME=/var/run/alsasound' -I -f /var/lib/alsa/asound.state restore 0 alsa-lib parser.c:2372:(load_toplevel_config) Unable to find the top-level configuration file '/usr/share/alsa/ucm2/ucm.conf'. alsa-lib main.c:1405:(snd_use_case_mgr_open) error: failed to import hw:0 use case configuration -2 ```

The error message tells me that alsa-utils 1.2.5 now tries to initialize UCM by default which doesn't work since I don't have [alsa-ucm-conf](https://github.com/alsa-project/alsa-ucm-conf) installed. After installing alsa-ucm-conf, the error message looks as follows:

``` $ alsactl -E 'HOME=/var/run/alsasound' -I -f /var/lib/alsa/asound.state restore 0 alsa-lib parser.c:242:(error_node) UCM is not supported for this HDA model (HDA Intel PCH at 0xf2530000 irq 35) alsa-lib main.c:1405:(snd_use_case_mgr_open) error: failed to import hw:0 use case configuration -6 ```

From reading the alsactl man page, it seems to me that UCM should only be initialized by default if it is available. Since alsactl 1.2.4 did not attempt to initialize UCM on my machine, this seems to be a regression introduced in alsactl 1.2.5. If I disable UCM explicitly using `alsactl -U`, everything works as expected. Similarly, downgrading to alsactl 1.2.4 again also resolves the issue.

I am not familiar at all with alsa internals but if desired, I can check with `git-bisect(1)` which commit between `v1.2.4..v1.2.5` introduced this regression.

Issue URL : https://github.com/alsa-project/alsa-utils/issues/101 Repository URL: https://github.com/alsa-project/alsa-utils