Hi, i install haos on a brand new rpi5 (8gb) with nvme ssd. (256gb)
it crash every day.
nothing in log file.
When it happens, nonmore interface, no more ssh connexion , but a ping frim my pc to the rpi works and is responding…
Have someone same issues ?
And how can I know why it is crashing ?
Every time it happens, I poweroff the rpi and power it on again, all is fine forba while.
thank you for your help.
Hm, weird 
SSH using the add-on? Can you maybe enable the host OS SSH (port 22222) and see if that continues to work (Debugging the Home Assistant Operating System | Home Assistant Developer Docs)?
When it crash : ping is OK, but ssh is NOK
For now, I think :
This seems to me as a problem with storage, hardware/driver related. The core network stack is then still working, but everything else that uses storage stalls.
You would need to raise the kernel loglevel to 7 and connect a serial console cable. Then you will see if for example if filesystem goes read-only due to crash in USB3 driver. I had that several times with my Pi4.