I have a shutdown problem similar to this one: Freya cannot shutdown. init: wait for state plymouth shutdownlightdm killed by TERM signal
However, there is plenty of output before the final line when the shutdown process stops that I can see for a split second only (there also seems to be a compatibility/driver issue with the AMD graphics card).
It's impossible to write down the output, so I'd like to take screenshots during the shutdown process before posting my question here. Is that possible and if yes, how? Thanks!