Re: Pb with sysrq (kernel 2.1 since sysrq exists)

David Woodhouse (David.Woodhouse@mvhi.com)
Tue, 20 Oct 1998 22:10:42 +0100

christophe.leroy5@capway.com said:
> On my computer, all sys request alt+syst+letter combination works
> except alt+syst+b (reboot) But if in kernel I replace the b by an x
> for instance, it works.

> I've tried on another machine, and alt+syst+b works.

We have exactly the same thing here, and I'd never actually got round to
investigating it. SysRq-B is never being passed to handle_sysrq(), but SysRq-X
seems to work.

Further investigation shows that other keys which don't ever reach
handle_sysrq() are:
1 2 3 4 7 8 9 0 F10 F11 F12 b n / numpad-minus numpad-enter
also the cursor keys and the (insert, home, pgup, del, end, pgdn) block

All numpad numbers work OK.

(L works but then the fucking kernel dies. Nobody ever did tell me why this
was done.)


It's a PS/2 keyboard on an Intel 440BX motherboard.

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