This [HowTo] I wrote shows you how to change kernel parameters:
(and it’s a good to have that activated anyway). The bit where the kernel parameter gets changed is:
echo kernel.sysrq=1 | sudo tee --append /etc/sysctl.d/99-sysctl.conf
where the kernel parameter being changed is kernel.sysrq=1 so just substitute yours for that one (I don’t know, but it’ll probably be initcall_debug=1, check the article)
