With reference to this closed thread: Nano occasional crash - strange output pattern
This happened to me again today on a new Nano 4Gb dev kit, on a different display.
I have seen the Nano crash with this output pattern on many occasions, on many devices. Does the pattern give a clue as to the reason why the device crashed? It happens once every few weeks, with any of my Nano based devices. I have no idea of the cause, it occurs at seemingly random intervals. Hope you can help!
I should add, that overall the image looks grey, this is a close up of the pixels on the screen. This image represents around 10% of the width of a 1080p output.
Another important piece of information is when this happens, if I connect through SSH I can close our application and restart it, but the grey pattern persists. like it overlays everything on the desktop.
FYI I have seen this happen on both:
Nvidia Nano developer kit booting from microSD
Nvidia Xavier NX plus Auvidea JNX30 Carrierboard booting from internal eMMC with additional M.2 SSD
I discovered that :
sudo pkill X
does get rid of the grey pattern, and returns me to the login page on the device
this doesn’t really solve my problem, but i guess it gives us a hint where the issue is coming from?
I also discovered this time round that our application is definitely still running just fine underneath this output. I am able to stream the display buffer from our application over the network to another computer and our application is running fine, but this pattern is displayed on the output.
I have attached the x-org log as suggested by linuxdev in the previous thread, the fault occurred around 5 minutes after boot, this full screen grey output pattern was displayed for around 10 minutes and then it went away, and back to our application which was running fine.
I have left the device running and I can SSH into it.