https://forum.qt.io/topic/37785/screen-blacks-out-after-closing-xcompmgr
Screen blacks out after closing xcompmgr | Qt Forum
Feb 13, 2014 - I am running two Qt applications on Linux Arm, in order for the user to see both windows I am using xcompmgr - a composite manager. One application opens the...
after closingscreenblacksqtforum
https://ftp.fau.de/ubuntu-ports/ubuntu-ports/pool/universe/x/xcompmgr/
Index of /ubuntu-ports/ubuntu-ports/pool/universe/x/xcompmgr
index ofubuntuportspooluniverse
https://archlinux.org/packages/extra/x86_64/xcompmgr/
Arch Linux - xcompmgr 1.1.10-2 (x86_64)
arch linux