Good morning.

I had a session a couple of days ago. I manually adjusted focus using autofocus, plate solving, and guidance (using the experimental multi star algorithm). I then set 3 sequences in the camera tab to capture LRGB each one for 20 images. I’m running KStars and indi from RPi4 8GB ram

Next day i checked the RPi, and I didn’t find KStars!!!! It is just vanished without error as if I totally closed it, but I had a hunch that it crashed as the indi driver still working and the scope is tracking (I recently used EQDir cable for the HEQ5). I found 19 L images, so I guess something happened on saving the 29th L and move to R filter (just guessing).

I’m trying to find a log or crash report to read but couldn’t find any. I know that there are many threads about crash reports, but couldn’t find something similar, so my apologies in advance if this is a repeated post.


Thank you
Mohamed

Please use ekos-debugger to record the crash backtrace which can help us investigate this.

Thank you Jasem. Is this tool will use the old log files, or I would need to emulate the session to reproduce the bug?

This tool will catch the crash as it happens, so you need to repeat the session with it.

I'm using RPi for ekos. Any link on how to install tis tool on RPi?

After reviewing other similar problems with RPi, I found that it may be a power supply issue. RPi 4 requires at least 3.5A, and RPi3 needs 3.1A. This is about 17% increase in supply and similar "sudden disappearance" of applications has been reported since RPi 4 released. In the /var/log/messages, and /var/log/syslog files, there is a sudden stop of execution of something without error. It just drops from the system without a trace.

I found that I was using the power supply for my old RPi3 with the new RPi4. I upgraded the power supply and will give it a try hoping it will never happen again...

While power supply could be an issue, it's unlikely. Most likely there is indeed an issue causing KStars to crash so with ekos-debugger it's easier to figure out.

I would like to use ekos-debugger, but I can't install it over RPi. when I run:

sudo apt-get -y install ekos-debugger

I get "package not found"

Try this:

It has the same error:

E: Unable to locate package ekosdebugger

It's available on StellarMate. For regular raspbian, you can compile from here: github.com/knro/ekosdebugger

Thanks Jasem. I got it and will post in this thread as soon as I'm able to emulate the error (when skies clear after Sally)