Hi,
I’m experiencing the same problem with the Obsidian AppImage from the official website:
2021-10-10 22:36:12 Loading main app package /tmp/.mount_Obsidi1t6uID/resources/obsidian.asar
The futex facility returned an unexpected error code.
OS: Manjaro LInux
DE/WM: Sway
Obsidian version: 0.12.15