/usr/bin/qemu-edid: invalid option -- '-' This is a test tool for the qemu edid generator. Typically you'll pipe the output into edid-decode to check if the generator works correctly. usage: qemu-edid options: -h print this text -o set output file (stdout by default) -v set monitor vendor (three letters) -n set monitor name -s set monitor serial -d set display resolution -x set preferred width -y set preferred height -X set maximum width -Y set maximum height