Early 2015 MBP 13 with Fedora - speakers sound terrible under Linux
Hello
I got this MBP for free from friends and I'm preparing it for my sister to use with Fedora Kinoite (it performs fine, just gets a bit warm - I have it on NVME SSD in adapter). The problem is sound - boot up chime sounds totally normal, then systems starts and it sounds awful. As far as I've seen MBP has 4 speakers, but it feels like it either plays with just 2, or it plays the sound trough wrong speakers, like - woofers mixed with tweeters or vice versa, and it sounds terrible this way. So far it seems Fedora is using the correct driver for CS4208, but the sound config is broken. Did anyone here had the same issue and managed to fix it?
Also I tried it on different distros (PopOS via USB, so Ubuntu 24.04) and same result - sounds terrible. Seems like the only solution will end up being manual setup to this machine, but I don't know how to do it correctly (for now). PLS HELP :)