oom_kill - Out of memory Kill

1. Enabling SysRq functions
2. SysRq Shortcut

The SysRq key can run a bunch of kernel-level commands, eg oom_kill.
oom_kill will kill the process taking up the most memory.
In most cases this should unfreeze Ubuntu.

You can run oom_kill from the keyboard with the following shortcut:
alt + SysRq + f # Kill the process taking up the most memory

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Enabling SysRq functions

SysRq Shortcut

Most laptops don’t have a physical SysRq key. Instead use the keyboard combination fn + s.

Sometimes the SysRq key is only recognised on release.
To run oom_kill on these machines, after enabling it, do the following:

press and hold alt press fn and s keys together, then release them (keep holding alt) Press f

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