4 thoughts on “Tech question

  1. AFAIK, the “Magic SysRQ” gets its magic from it being picked up by very low-level code in the keyboard handler in the kernel, which would preclude it working via any sort of network connection.
    Unless you mean that the “console server” is a KVM box of some sort, in which case it should work, unless it filters out certain combinations (for its own use?).

  2. Good question! So by “console server” you mean you’ve got a serial console? If so, sending a BREAK ought to do it, provided magic sysrq is compiled in and enabled (cat /proc/sys/kernel/sysrq — should be 1).

    1. Sadly that did not work on this machine, but it turned out that it was so badly horked that it needed to be unplugged physically.
      I’m going to find a machine that’s hooked up to that thing which can be futzed with and find a recipe that works.

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