Unter Linux gibt es die sogenannte Magic-SysRq-Taste. Damit ist es in vielen Situationen möglich ein eingefrorenes System erfolgreich herunterfahren. Weitere Details zur Nutzung finden sich im ​deutschen und ​englischen Wikipedia-Artikel.

Die folgende Liste stammt aus der englischen Wikipedia und wurde um die Neo-Belegung ergänzt.

Beschreibung	QWERTY	Neo
Set the console log level, which controls the types of kernel messages that are output to the console	0 through 9	0 through 9
Immediately reboot the system, without unmounting partitions or syncing	b	z
Reboot kexec and output a crashdump	c	ä
Display all currently held Lock (computer science)|Locks	d	a
Send the SIGTERM signal to all processes except init (Process identifier|PID 1)	e	l
Call oom_kill, which kills a process to alleviate an Out of memory|OOM condition	f	e
When using Kernel Mode Setting, provides emergency support for switching back to the kernel's framebuffer console<ref>​DRM: i915: add mode setting support</ref>	g	o
Output a terse help document to the console<br/>Any key which is not bound to a command should also do the trick	h	s
Send the SIGKILL signal to all processes except init	i	g
Kill all processes on the current virtual console (Can be used to kill X and svgalib programs, see below) This was originally designed to imitate a Secure Access Key	k	r
Show a stack backtrace of all currently executing tasks	l	t
Output current memory information to the console	m	m
Reset the nice (Unix)|nice level of all high-priority and real-time tasks	n	b
Shut off the system	o	f
Output the current registers and flags to the console	p	q
Display all active high-resolution timers and clock sources.	q	x
Switch the keyboard from raw mode, the mode used by programs such as X11 and svgalib, to XLATE mode	r	c
Sync all mounted filesystems	s	i
Output a list of current tasks and their information to the console	t	w
Remount all mounted filesystems in read-only mode	u	h
Output Voyager SMP processor information	v	p
Display list of blocked (D state) tasks	w	v

Eine beliebte Tastenfolge ist REISUB, dessen Enstprechung CLGIHZ in Neo ist. Eine Gedächtsnisbrücke für dieses Kürzel gibt es noch nicht. Vorschläge bitte direkt ergänzen.