Cannot access Beaglebone via Ethernet SSH after some time!

Levy Oliveira

Hi,

I am accessing beaglebone black (arago linux, kernel 3.12) using ssh over ethernet.

I have noticed that if the board is turned on but no ssh connection is made after a while, I cannot connect anymore and a hardware reset must be done!

The amount of time needed to loose communication varies from some minutes to some hours.

I have already discarded supply issues! The board is supplied 5Vdc in the power jack connector.

I have tried to automatically reboot the board every 20 minutes, but it did not work!

Maybe there is something in the system putting the board to sleep or shutting it down.

Any ideas?

Thanks in advance!

over 10 years ago

0 Levy Oliveira over 10 years ago

Intellectual 360 points

I have an update to inform! I was able to capture a negative short spike in the SYS_RESETx signal. SYS_RESETx signal was 3.3V, as usual, and suddenly it fell to below 2V and then returned to 3.3V. After that, no connection was possible. It did not reach 0V, otherwise I think a normal reset would occur. I will try to catch it again with more resolution, but it seems something is generating a spurios reset in the system. Any suggestions? Thanks again!

0 Biser Gatchev-XID over 10 years ago in reply to Levy Oliveira

TI__Guru**** 393215 points

This is the warm reset signal. It's issued from the processor. Please check that your USB driver has OTG mode disabled. BBB hangs have been known to occur with the USB OTG mode enabled.

0 Levy Oliveira over 10 years ago in reply to Biser Gatchev-XID

Intellectual 360 points

Thanks, Biser, I will check it!

0 Levy Oliveira over 10 years ago in reply to Levy Oliveira

Intellectual 360 points

Hi, Biser,

OTG support is not enabled in Kernel, but there is some Dual Role options enabled! Dual role options present the same problem?

Anyway, I am not loading any USB module anymore and I continue to have the board halted after sometime!

Do you know any other possible cause?

Thanks in advance!

0 Biser Gatchev-XID over 10 years ago in reply to Levy Oliveira

TI__Guru**** 393215 points

I don't have any other ideas. Perhaps you could try with the newer SDK 8.0?

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Cannot access Beaglebone via Ethernet SSH after some time!