clamshell-or-lid-detection.txt

# I tried a lot of different things to detect clamshell mode and do something clever to make
# it sleep right, but I can't for the life of me figure out how to easily disable clamshell
# on Mojave.  The 'sleep for a while' method has solved my problem but seems a little hacky
# Come on Apple - how hard should it be to have my mbp actually sleep when I close the lid?
# Whether or not I have an external monitor shouldn't affect things, or at least should be
# configurable.

# here are the many ways I found to detect from shell whether I had a second monitor or not



# commands that have different output when in clamshell mode/laptop-display closed

#the cannonical way that people say to use, all over the internet
ioreg -r -k AppleClamshellState | grep AppleClamshellState

system_profiler SPDisplaysDataType
xrandr -q

screencapture 1.png 2.png 3.png #will only create as many files as there are screens

ioreg -n IODisplayWrangler
ioreg -lw0  | grep 'display-connect-flags'
ioreg -lw0  | grep 'display-type'
#also IODisplayGUID (and related things in this field)
ioreg -lw0  | grep 'DisplaySerialNumber' (one or two entries)

#maybe not this one
defaults read /Library/Preferences/com.apple.windowserver.plist