glibc 2.31 is too old for system shared libs (libasound, libdbus) on Ubuntu 22.04 runners which have glibc 2.35. The linker rejects symbols from libs compiled against newer glibc. glibc 2.35 covers: Raspberry Pi OS Bookworm (2.36), Ubuntu 22.04+, Armbian Bookworm, DietPi Bookworm. Bullseye (2.31) is EOL June 2026. cc