Comment 4 for bug 1025467

Yes, check out the file /etc/sysctl.conf or /etc/sysctl.d/*magic*.conf. There you will see to what point sysrq is enabled and you may change what to enable in future occasions. To set the enabled features instantaneously you might as well just read the files I listed for documentation, and save the number of your convenience to /proc/sys/kernel/sysrq.