I don’t know how to locate SysRq

[Individual-Heart-719]

@robin0800

You have to add “kernel.sysrq=1” to /etc/default/grub then update grub and reboot.

Wasn’t it like this?

@Fabby

• Execute echo kernel.sysrq=1 | sudo tee --append /etc/sysctl.d/99-sysctl.conf I don’t want any stinking commands editing my files for me!
• Oh, you’re the manual kind of person and wants to document why you’re doing this, right?
• Add to your /etc/default/grub in the GRUB_CMDLINE_LINUX_DEFAULT parameter the sysrq_always_enabled=1 variable instead of executing the above command
• Execute sudo update-grub
• Reboot normally and come back here to read the rest of the blurb…

What I’ve done is what it says here. Enable it for the current boot cycle

sudo sysctl -w kernel.sysrq=1

and enable it for subsequent boot cycles

echo kernel.sysrq=1 | sudo tee --append /etc/sysctl.d/99-sysrq.conf

@leledumbo

Use xev.

Is the package xevdevserver, xorg-xev, or something else?

@TriMoon

See what leledumbo said above, or like this:

@anon51566685

Just FYI; you can test it by running journalctl -f and then do Alt+SysRq+h.

If it’s working you’ll get sysrq help output into journal:

kernel: 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)

That works.