Thinkpad C13 - Incorrect speaker configuration (no sound) on Brunch 126

[djbrad]

Hi everyone,

I installed MrChromebox 2405.1 firmware on my Thinkpad C13, as I was always short on space with Chromeos and it felt slow.

Installed Linux Mint 22 xfce on the emmc, works very well, everything's fine.

I wanted to keep chromeos on a usb flashdrive, in case I wanted to launch an android app.

I downloaded the morphius recovery image, and installed with brunch. Chromeos works fine, but I get no sound on the internal speakers (works fine with headphones).

I tried with the gumboz recovery image, same results.

I went to console, and I got sound with speaker-test to plughw:1,1 , so I think it's just a wrong audio profile that is loaded.

I tried a few things, but without success. Does someone got a suggestion?

Thanks a lot!

Brad