Hi Jon.  First of all, you should not be using a SG1 image with the E313.
All E313s contain E310s with Speed Grade 3 FPGAs.

The behavior you describe is a result of a corrupted bit in the AVR EEPROM
firmware that results in the power on sequence requiring the power button
to be pushed.   This corruption can occur when power is abruptly removed
from the device instead of powering it down cleanly.   The most
straightforward way to resolve this issue is to RMA your E313.   The latest
revision of the E313 always powers on when power is applied and ignores the
state of the power button.

-Robin


On Sun, May 13, 2018 at 11:19 PM, liu Jong via USRP-users <
usrp-users@lists.ettus.com> wrote:

> Hi all,
> We have two pieces of E313,the difference of them is one of them insert
> sg1 imges and another insert sg3 image.
> When we take DC power supply(12V) for e313,the  sg1's e313 would  auto
> start,but for the sg3's e313,we must press power button,then e313 power on.
> Is it normal?How could make auto start for sg3's e313?
>
> best regards
> Jon
>
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