When a glibc update accidentally breaks Chromium's audio (2021) refi64.dev

A 2021 update to Chromium’s Flatpak runtime brought glibc 2.33, which changed how condition-variable waits call futex; Chromium’s audio sandbox then rejected the added `FUTEX_CLOCK_REALTIME` flag, crashing the audio service and breaking playback. The post’s author traced the bug to a sandbox policy that failed to account for that flag, and says a one-line change fixed it.