You can monitor system log files to see what is reported as you try to run a program or plug in some hardware. Most programs send reports to the system log, which you can watch in a separate root terminal with
tail -f /var/log/messages
The -f, or --follow, option shows messages as they are written to the log, and you can use this with any log file. If there is too much noise for you to be able to read any useful information, use grep to show only messages relating to your process with
tail -f /var/log/messages | grep ssh
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