Troubleshooting:alsa

During alsa upgrades, sometimes the ucm profiles break. Here are some tips and tricks to fix them.

alsaucm reload
Run  and see if it it prints an error message. If it does, run it again with strace and look at what it is doing before the error. Maybe the paths or loading of the ucm files changed again:

As of writing, a recent example was alsa expecting all files in  to be a symlink. It would fail with  otherwise: faccessat(AT_FDCWD, "/usr/share/alsa/ucm2/conf.d/simple-card/PinePhone.conf", R_OK) = 0 newfstatat(AT_FDCWD, "/usr/share/alsa/ucm2/conf.d/simple-card/PinePhone.conf", {st_mode=S_IFREG|0644, st_size=196, ...}, AT_SYMLINK_NOFOLLOW) = 0 mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xffffbd38b000 readlinkat(AT_FDCWD, "/usr/share/alsa/ucm2/conf.d/simple-card/PinePhone.conf", 0xffffbd38b1b0, 4095) = -1 EINVAL (Invalid argument) munmap(0xffffbd38b000, 16384)          = 0