Hmm… I did mcetool --disable-led-pattern=PatternScanningFingerprint and now I can’t turn it of.
Obviously I tried mcetool --disable-led-pattern=PatternScanningFingerprint and I also tried mcetool --deactivate-led-pattern=PatternScanningFingerprint including reboot but nothing helps. Green light is permanently lit when screen is of. Hints anyone?