Octoprint hanging on print "Starting..."

I just installed Octolapse today and went through all the getting started guides. By all accounts, the webcam and such is detected and working. I also do not have Test Print enabled in Octolapse settings.

When the Octolapse plugin is enabled, whether Test Print is enabled or not, the logs seem to report that Octolapse is processing the gcode and finding the best timelapse plan and then it just stops. Which is what I'm actually seeing. The bed and the extruder never heat up, and it never starts printing.

If I disable the plugin entirely, the bed will heat and it will print as usual. I can't see any errors. It's just simply not doing anything.

Attached is the Octolapse log of me trying to start a print. Waiting a few minutes and manually canceling a few times.
plugin_octolapse (3).log (2.7 MB)

Tiny bit of log from the terminal when I hit Start:

Send: M105
Recv: ok T:23.0 /0.0 B:23.1 /0.0 T0:23.0 /0.0 @:0 B@:0 P:22.9 A:28.3
Changing monitoring state from "Operational" to "Starting"
Send: N666 M73 P0*81
Recv: NORMAL MODE: Percent done: 0; print time remaining in mins: -1
Recv: SILENT MODE: Percent done: 255; print time remaining in mins: -1
Recv: ok
Send: N667 M73 P0*80
Recv: NORMAL MODE: Percent done: 0; print time remaining in mins: -1
Recv: SILENT MODE: Percent done: 255; print time remaining in mins: -1
Recv: ok
Send: N668 M105*47
Recv: ok T:22.8 /0.0 B:23.0 /0.0 T0:22.8 /0.0 @:0 B@:0 P:22.7 A:28.8
Send: N669 M105*46
Recv: ok T:22.7 /0.0 B:23.2 /0.0 T0:22.7 /0.0 @:0 B@:0 P:22.8 A:29.1

Raspberry Pi 4B, OctoPrint 1.4.2, Python 2.7.16, OctoPi 0.18.0, Prusa MK3, Chrome, Windows

1 Like

I'm having a very similar issue. I can heat the bed and nozzle, move through all axis via the control panel and I can run bed visualization. When I send a print, the status goes to "printing" then nothing happens. The bed and nozzle do not heat up and the print never really starts.

Pi4 8gb, Prusa MK3/S, Prusa Slicer, Beta 64bit OctoPi build.

Logs. We need logs. No logs, no way to know what is going on.

Have you tried disabling OctoLapse? Does the print start ok with OctoLapse disabled?

I disabled OctoLapse last week. No changes. I will see if I can find the logs. I haven't played with Linux in a very long time so I need a mental refresh.

Pssst... the word logs is a link... you can click on it and it will lead you to a post that explains you all you need to know about where to find what logs. Groovy, eh?

Thanks. I will post logs once this print finishes.

I got the print to run once I confirmed OctoLapse was disabled.

@digitalmoto, what OS are you running OctoPrint on? I've been working on an issue with a custom c++ extension where it doesn't compile correctly for some OSs. You may have run into this. The problem appears to be that the 'snapshot plan', which Octolapse uses to determine when to take snapshots, is not correctly transferred back to Python (lots of null values). I looked at your log, and I think this is probably the issue since the external call completes and reports snapshots back to Python, but then fails when trying to unpack the results.

OS: Debian GNU/Linux 10 (buster)
Kernel: Linux 5.4.59-v8+

OctoPrint Version : 1.4.2
OctoPi Version : 0.18.0

octoprint.log (2.9 MB) plugin_octolapse.log (8.8 KB)

I'm having the same issue.

Mac OS Catalina
Ender 3 Pro
Octoprint 1.4.2
Octolapse 0.4.0


Thank you. This is a very difficult issue to debug, but I'm working on it :slight_smile:

Okay. I'm finally back with all the logs I could find. Hope it helps.

haproxy.log (42.3 KB)
octoprint.log (10.7 KB)
plugin_firmwareupdater_console.log (63.1 KB)
plugin_octolapse (4).log (838.3 KB)
syslog.log (70.4 KB)