Black screen occurs when rebooting macOS 11 (Big Sur) or when making logout
After that the mac has been rebooted, when the user connects by NoMachine he/she gets a black screen on login window. The same occurs when performing a logout.
As a possible workaround, remove nxaudio.kext by running from a terminal:
sudo rm -rf /Library/Extensions/nxaudio.kext
and reboot the mac.
Audio will be no longer available in NoMachine sessions.
SOLVED, Released in version 7.7.4
