On Fri, Feb 14, 2014 at 3:42 PM, John Donnelly <joh...@servergy.com> wrote:
> Hi,
>
> I tried using the SysRq hotkey sequence on a serial console -
> 3.11.0-5-powerpc-e500mc system, by issuing a " break " and the system
> immediately wedges after displaying "SysRQ : HELP : " using both "Putty" and
> "Teraterm" terminal emulators. I know the system is dead because my ssh
> sessions stopped too.
Yes it does work -- or at least it _did_ work. Make sure your dts has an entry
compatible = "fsl,ns16550", "ns16550";
since that enables a workaround I'd added for a hardware errata relating
to sending breaks over the serial console. What you describe above
makes me think you aren't getting the workaround enabled.
Paul.
--
>
> http://en.wikipedia.org/wiki/Magic_SysRq_key .
>
>
>
>
> --
>
> Regards,
> John.
>
> --
>
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>
>
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