Public bug reported:
[ 316.110967] sysrq: This sysrq operation is disabled.
[ 340.098340] sysrq: HELP : loglevel(0-9) reboot(b) crash(c)
terminate-all-tasks(e) memory-full-oom-kill(f) kill-all-tasks(i)
thaw-filesystems(j) sak(k) show-backtrace-all-active-cpus(l)
show-memory-usage(m) nice-all-RT-tasks(n) poweroff(o) show-registers(p)
show-all-timers(q) unraw(r) sync(s) show-task-states(t) unmount(u) force-fb(V)
show-blocked-tasks(w) dump-ftrace-buffer(z)
# uname -a
Linux laptop 5.3.0-46-generic #38-Ubuntu SMP Fri Mar 27 17:37:05 UTC 2020
x86_64 x86_64 x86_64 GNU/Linux
# lsb_release -rd
Description: Ubuntu 19.10
Release: 19.10
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1871996
Title:
Can't turn off lockdown with alt-sysrq-x
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