Magic Sysrq

It's rare I need to reboot a locked up system but I'd like to have the option available if it should happen.

I use a wireless keyboard which isn't full size and unfortunately doesn't have a Sysrq or Printscreen key. Am I out of luck with using Magic Sysrq keys or is there a way to use an alternative key combination?

Thank you

31 points · 9 comments · view on lemmy.world

9 Comments

hexagonwin@lemmy.today · 7 pts · 136d (5 replies)

AFAIK there's no way to change it other than modifying the hardcoded keycodes and recompiling the kernel. (please correct me if I'm wrong)

eldavi@lemmy.ml · 4 pts · 136d (4 replies)

i'm likely wrong, but i was under the impression that we've left out sysreq keys out of the kernel a while ago.

qprimed@lemmy.ml · 11 pts · 136d (3 replies)

sysrq is often a runtime config in many distributions (e.g. Debian). sysrq+reisub is really useful on occasion.

@earthling@piefed.social some keyboards without a dedicated sysrq/printscr key will emulate with a different key combo (many thinkpads use Fn+k)

edit: ping

earthling@piefed.social · 6 pts · 136d

I think I'm out of luck then, I did some research before making this post and my keyboard (Logitech k400+) doesn't have an alternative key combo.

I guess I'll have to keep doing safe reboots by logging into a terminal, a little less convenient than Sysrq + reisub but not a big deal.

Thanks everyone.

floquant@lemmy.dbzer0.com · 3 pts · 136d (1 reply)

Just FYI, mentions don't create notifications on edits as far as I'm aware

qprimed@lemmy.ml · 2 pts · 136d

hey there. thanks for the heads up - sounds like a possible feature request perhaps.

MonkderVierte@lemmy.zip · 6 pts · 135d

Also, you need to create a .conf file in /etc/sysctl.d with kernel.sysrq=1 to enable it now. Or add it as kernel parameter in your bootloader.

elmicha@feddit.org · 3 pts · 136d (1 reply)

I didn't try it, but this looks like it should work.

earthling@piefed.social · 2 pts · 135d

Thanks but it looks to be more trouble than it's worth I'm not very tech savvy, I hoped there would be an easy fix but I'll go without the Magic Sysrq commands.