Hello everyone,
I have been using the Beaglebone Blue for over 3 months now without any
problems until now. The board typically boots off the SD card, primarily
because I needed the extra space for a ROS installation. I originallyt used
the latest Debian Jessie image for a couple of months and then created a
new SD card (early December 2017) with the new Debian stretch image and
then setup ROS (from source).
EMMC does not boot anymore
--------------------------------------------
I recently noticed that when the SD card is removed, the board will not
boot from the EMMC for some reason. This was clearly not the case about a
month ago when I moved on to stretch, so whatever caused this must have
happened recently. I typically power the board from the USB and
occasionally from an external 12V DC source. In terms of devices, I am
using the IMU and the UART to talk to a motor controller (Roboteq in
particular), but during the last month the controller was not connected, so
the board was practically running with no external devices connected to it.
I once or twice briefly used different SD cards on it.
Other (potentially) Related Issues
--------------------------------------
In addition to not booting from the EMMC, I noticed occasional hangs during
updates and/or prolonged downloads. In some cases, the crashed
download/update process can be interrupted by Ctrl-C and in others not.
Regardless, the Beaglebone does not work properly, as many subsequent
commands (for instance, "ps") will crash and the only way to recover is by
hard reset. However, in many occasions after the reset, the root file
system is corrupted and we have to repair it using fsck.
Consistency
------------------
I originally believed that the stretch installation was the source of the
crash problem (did not think it was related to the EMMC not booting up), so
I re-installed Debian Jessie and stretch multiple times to realize that the
crashing-during-updates problem was consistently re-appearing regardless of
Debian version at various stages. Thus, I was led to believe that this a
board issue rather than something that has to do with the Debian and most
probably, not being able to boot from the EMMC is a symptom of the same
problem. In my last attempt, I burned the stretch image into the SD card
and the Debian could not update right off the bat (it gave a root file
system error :
E: List directory /var/lib/apt/lists/partial is missing. - Acquire (30:
Read-only file system)
Note that the Beaglebone Blue board appears to be in working order
otherwise (i.e., wireless appears to work, cloud page, etc.).
I would very much appreciate your help in troubleshooting this problem and
most importantly, finding out its cause.
Regards
George
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