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I'm using the Apple slim aluminum keyboard, which doesn't have the SysRq key:

Apple slim aluminum keyboard

What key(s) should I press for the magic SysRq key when I need to type REISUB?

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up vote 1 down vote accepted

try this, and see this.. seems that you have few options :(

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Excellent. Some great comments/fixes in the bug report discussion. – Chan-Ho Suh Jan 25 '13 at 21:32
Could you include the relevant information in your answer? These links might die. – unor Nov 12 '13 at 19:01
Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference. – Mitch Jan 7 '15 at 20:07

I don't have an alu keyboard on hand to test this, but:

System:Preferences:Keyboard Preferences:Keyboard Layout Options:Miscellaneous compatibility options:Apple Alu…

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Just did this. If you don't want to recompile the kernel like suggested in the first link of the first answer, there is a simpler way. It's kind of outlined in the second link of the first answer, but here is the actual procedure:

  1. Download source for keyfuzz (

  2. Compile and install with the usual commands

sudo make install
  1. Add the following line to your /etc/rc.local file:

echo "458856 99" | /usr/local/sbin/keyfuzz -s -d /dev/input/by-id/usb-Apple__Inc_Apple_Keyboard-event-kbd

  1. Reboot

Now it should be possible to press Alt+F13 and issue REISUB. Worked on my Xubuntu 15.10.

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