I'm running Octoprint headless for 2-3 years with my Prusa Mini+ now and I always used the latest 64Bit Nightlies without any problems.
I tried to setup the 2025-10-12_2025-10-01-octopi-trixie-arm64-lite-1.2.0 and the 2025-10-13_2025-10-01-octopi-trixie-arm64-lite-1.2.0 nightlies and had some problems with that. I also tried the older octopi-trixie nightlys all with same problems. All trixie Nightlies up to 2025-10-16... have these problems!
When starting the Rasspbery Pi 4 8GB with those images I got several SSH-Sever not running failures at startup, and I can't reach my Raspberry Pi using putty.
When working headless this issue is really booring, because to solve this you have to attach a display and keyboard.
To solve that problem you have to edit the /etc/ssh/sshd_config and delete the line that shows "IPQoS 0x00" it should be the last line.
In the official distribution of trixie this entry is not present, so this problem only made in the nightlie builds.
After that no SSH-Server failure will occure anymore at startup and you can ssh into your Raspberry.
The octoprint Web Ui is not reachable, everything is fine, octoprint seems up and running and I can reach my Raspberry Pi using putty with the ip-address I gave the Rasspberry Pi for OctoPi.
But the webinterface is not reachable, it dosn't matter wich address I use: OctoPi.local dosn't work, http://LAN-IP dosn't work, http://WLAN-IP dosn't work.
This Problem depends on an outdated haproxy.cfg that contains outdated instructions!
The haproxy version is 3.0.11-1+deb13u1, the reqrep and reqadd instructions in the haprox.cfg are not loger supported since HAProxy 2.1!
To solve these you have to edit /etc/haproxy/haproxy.cfg!
In section "defaults" change the timers from 15min to 15m !
In section "backend octoprint" change regrep to http-request replace-path !
In section "backend octoprint" change regadd to http-request add-header 2x!!
In section "backend webcam" change regrep to http-request replace-path !
Save your changes and reboot your Pi. After reboot the OctoPrint Web Ui is reachable.
I can't find out who is responsible for the Nightlies and how to contact these persons to tell them about these problems, because I think they don't know about them, and to make shure that these problems are solved before pushing out the next Nightlie!
In my oppinion I think before pusching out a Nightlie it has to be verified that such Problems dosn't occour and / or are solved as soon as possible.
I'm missing a changelog for the Nightlies and the option to report Bugs...