I can't get the Adafruit Video Looper to run read-Only!!

[dokcal]

This is driving me crazy! Especially since the Video Looper is LINKED from the Read-Only instruction page!

Here are the two pertinent pages on the Adafruit Learn site:

https://learn.adafruit.com/raspberry-pi ... r?view=all

https://learn.adafruit.com/read-only-raspberry-pi/

I have a fresh install of Raspbian Lite running the Video Looper, and it works perfectly on my Pi 3 B+. The problem comes when I try to make the system read-only. I've tried every possible combination of settings in the read-only setup, but when I reboot the RPi, it just boots and stops. It doesn't run the video looper.

I'm a serious n00b in Linux-land, so I have no idea where to go from here.

Has anyone successfully set up the VIdeo Looper to run read-only? If so, did you have to do anything unusual to get it working?

Thanks in advance for any and all assistance!

--Dave

[adafruit_support_mike]

We've never tested those two projects together, so it's hard to guess where things are failing. It's possible that the Video Looper code needs write access to the filesystem somehow.

[trorke]

I was able to run the video looper application on a read-only system without any issues. The only modification i had to make was to add the startup command from video_looper.conf into rc.local, as for some reason it stopped launching on boot after running the read-only installation script.

my /etc/rc.local looks like this now:

Code: Select all

# Print the IP address
_IP=$(hostname -I) || true
if [ "$_IP" ]; then
  printf "My IP address is %s\n" "$_IP"
fi

gpio -g mode 21 up
if [ `gpio -g read 21` -eq 0 ] ; then
        mount -o remount,rw /
        mount -o remount,rw /boot
fi

python -u -m Adafruit_Video_Looper.video_looper &

exit 0

[adafruit_support_mike]

Glad to hear you got it working, and thanks for posting the solution!

[dokcal]

Fantastic! Thank you so much!

As it happens, the video looper seems pretty bulletproof anyway--I tried yanking the power cord at all different phases of operation, and never managed to corrupt the microSD card--but I'd much rather make it bulletproof the right way!

Thanks again!

[urbanvisuals]

I haven't looked too much into this, but I had a similar project that was controlled/launched with the supervisor app (in the same way as the Adafruit Video Looper), and it wouldn't run after I made the system read-only. Using the supervisorctl app, I noticed that my program that was due to be launched was no longer registered/listed as a process to launch.

I'm going to look more into this, and will update as necessary.

[minizzZ]

Try this one. Worked for me.

https://github.com/JasperE84/root-ro