Sorry, and actually there should be no white spaces in that period. So .  .
.

cmdline=kernel.nmi_watchdog=0

On Thu, Apr 21, 2016 at 3:42 PM, William Hermans <[email protected]> wrote:

> *With the newest Debian distro, whenever I do that, I get a message that
>> the power button has been pressed, and the BBB simply shuts down after
>> that. *
>>
>
>
>> Any ideas on what might have changed in the OS for this to happen?
>
>
> Code I could not say what exactly has changed, but I can say the code in
> the context of the button press NMI *has* definitely changed since.
>
>  I can give you something to experiment with that may actually fix that
> issue for you.
>
> william@beaglebone:~$ sudo sysctl -a | grep nmi
> kernel.nmi_watchdog = 0
>
> If kernel.nmi_watchdog = comes back equal to 1 for you. Then simply
> changing this to zero ( 0 ) may solve the problem. so changing the cmdline=
> line in /boot/uEnv.txt to. . .
>
> cmdline=kernel.nmi_watchdog = 0
>
> Do keep in mind that this is supposed to be an x86 / x86-64 cmd line
> option only, so may not work. But the sysfs entries are there, so I'm
> thinking it should work . . .
>
> On Thu, Apr 21, 2016 at 9:55 AM, <[email protected]> wrote:
>
>> Hello guys,
>> I have a custom carrier board powering my Beaglebone Black through the 5V
>> supply pins on P9 (pins 5+6, I believe).
>>
>> Because I'm having issues getting my working legacy Angstrom distribution
>> image cloned onto new boards that have Micron flash instead of Kingston, I
>> decided to give a newer Debian a quick try.
>> I have a 3.3V power regulator with an enable input on the board, so the
>> BBB needs to assert a particular GPIO high to enable that power rail.
>> With the newest Debian distro, whenever I do that, I get a message that
>> the power button has been pressed, and the BBB simply shuts down after that.
>>
>> My 5V regulator can supply up to 5A, and this switchable 3.3V rail
>> doesn't even really have any load on it yet until I install the rest of the
>> hardware, so I don't believe it should have created any substantial drop in
>> the 5V power.
>>
>> I can do the same operation on the same (older) BBB with Angstrom
>> installed and I do not have this problem.
>>
>> Any ideas on what might have changed in the OS for this to happen?
>> I may go back down the road of figuring out how to clone my Angstrom
>> build over to the new boards, but still kind of curious why this might have
>> happened.
>>
>> --
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>
>

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