(In reply to Takashi Iwai from comment #66) > Created attachment 860969 [details] > UCM HiFi.conf rev 5 Speaker doesn't work. I can click on the speakers in gnome settings but no sound is outputted [ 23.179302] cs35l41 spi-VLV1776:00: DSP1: No algorithms [ 23.229816] cs35l41 spi-VLV1776:00: ASoC: POST_PMU: Left DSP1 event failed: -5 [ 23.314642] cs35l41 spi-VLV1776:01: DSP1: Firmware: 0 vendor: 0x0 v0.0.0, 0 algorithms [ 23.314659] cs35l41 spi-VLV1776:01: DSP1: No algorithms [ 23.315319] cs35l41 spi-VLV1776:01: ASoC: POST_PMU: Right DSP1 event failed: -5 Can you tell me why your original ucm2 only plays sounds on the left channel but output sounds to both speakers? The configuration without ucm2 file also plays the left channel out two speakers I tested it with this command and it never worked on the right channel. speaker-test -Dplughw:1,1 -c2