Stephan von Krawczynski wrote:
> On Thu, 10 Jul 2003 16:20:14 +0200
> Carl-Daniel Hailfinger <c-d.hailfinger.kernel.2003@gmx.net> wrote:
>
>
>>Since your hangs are not even traceable with SysRq, please try to boot
>>with nmi_watchdog=1 and if that doesn't work (dmesg will complain)
>>nmi_watchdog=2. About 15 seconds after the hang your box should print a
>>backtrace.
>
>
> I have currently nmi_watchdog=1 which works (NMI interrupts show up during
> normal operation), but there is no backtrace visible or producable during the
> freeze, sorry.
How is that possible? If the NMI watchdog works but doesn't fire, the
lockup should respond to SysRq-T. Could you please try SysRq-T *before*
the hang just to verify that it would work?
Regards,
Carl-Daniel
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