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Re: how do i sent a ctrl-alt-del over screen serial console

From: Jürgen Weigert
Subject: Re: how do i sent a ctrl-alt-del over screen serial console
Date: Thu, 7 May 2015 18:19:25 +0200

Hey Jelle!

The serial line protocol defines one out of band sequence. Only one
unfortunately. This is triggerd with the break or pow_break commands.
Usually they behave identical, or only one of them works. you already
found the keybinding.

The exact effect of break or pow_break depends on the hardware that is
connected to the other end of the serial line.
Triggering sysrq is pretty much the best thing that a break can do.
All else depends on the second keystroke you send after the sysrq.

cheers, JW-

On Thu, May 7, 2015 at 3:07 PM, Jelle de Jong <address@hidden> wrote:
> Hash: SHA1
> Hello everyone,
> How do i sent a ctrl-alt-del over screen serial console?
> I occasionally have systems hanging in grub-rescue and a simple
> ctrl-alt-del signal would reboot them.
> But I have been unable to figure out how to do this with grub.
> I know commands like c-a b b send a sysrq reboot, is there a ctrl-alt-del?
> Kind regards,
> Jelle de Jong
> Version: GnuPG v1
> yVtlC9trUkDeoxliKcDFl1mcmjX80NBjem6HomIZ1ou9T2XVDPa31L0w+c1jDWGh
> fyOubY3g82XDk122ekM7DZg1FutjQGNt1dV+FQ+WJf3upjfi9ahzobfK0oE51sAS
> 9dz2or2bpLDSZS87+D0=
> =BVss
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