Re: 2.4.10-ac4 (SMP, highmem) complete freeze

[george anzinger]

Igor Mozetic wrote:
> 
> Marcelo Tosatti writes:
> 
>  > Can you try to get any backtraces the next time the machine locks up ?
>  >
>  > You can use the SysRQ key's for that (documentation about it at
>  > Documentation/sysrq.txt). (Alt+SysRQ+T and Alt+SysRQ+P traces)
> 
> Well, at the time of this lockup I was in almost on-line contact
> with Ingo and we couldn't get anything at all! Screen was dead blank,
> no keystroke worked, NumLock didn't work, even Power Off didn't work.
> Also, nothing over netconsole. If you have any other suggestion,
> please ...

Did you turn on the NMI watchdog?  See
.../linux/Documentation/nmi_watchdog.txt in your kernel tree.

George
> 
> I'm now back to 2.4.3 (which worked reliably for months)
> just to make sure that the hardware is OK.
> But I strongly suspect kernel, because these deadlock
> coincide with 2.4.10 and I don't believe in coincidences.
> 
> -Igor Mozetic
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