P1S printer freezes when attempting to print from filament loaded into AMS-HT #1496

New Issue

MrUnknownDE · 2026-04-05T18:04:10+02:00

MrUnknownDE commented

2026-04-05 18:04:10 +02:00

Originally created by @caseymdk on 11/27/2025

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.2-dev - Build 7ec32fc484

Operating System (OS)

Linux

OS Version

Ubuntu 25.10

Additional system information

Framework 13, 64gb RAM, AMD Ryzen AI 9 HX 370 w/ Radeon 890M

Printer

Bambu P1S, AMS 2 Pro + AMS HT

How to reproduce

Given a P1S printer with AMS 2 Pro and AMS-HT:

Configure any print to use the filament loaded in the AMS HT
Print the file

Actual results

The printer stops working and sits there at the initialization step after heatbed has reached temp,when it normally feeds the filament from the AMS-HT into the hotend.

Expected results

The print starts successfully.

Project file & Debug log uploads

debug_Wed_Nov_26_23_51_15_87839.log.0.txt

Cube.zip

Checklist of files to include

Log file
Project file

Anything else?

Tested with the latest stable version 2.3.1 of Orcaslicer, and the issue does not occur. Hoping someone with an AMS HT can reproduce. The issue is occurring with a build using the latest commit on main, 7ec32fc.

With the latest commit on main, there is no issue printing from the AMS 2 Pro - only the AMS HT. The AMS HT shows up in Orcaslicer, and I can see the serial number of the HT and other details in the P1S screen. I have the 6 pin cables connected from the P1S -> AMS 2 Pro -> AMS HT.

*Originally created by @caseymdk on 11/27/2025* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.2-dev - Build 7ec32fc484 ### Operating System (OS) Linux ### OS Version Ubuntu 25.10 ### Additional system information Framework 13, 64gb RAM, AMD Ryzen AI 9 HX 370 w/ Radeon 890M ### Printer Bambu P1S, AMS 2 Pro + AMS HT ### How to reproduce Given a P1S printer with AMS 2 Pro and AMS-HT: 1. Configure any print to use the filament loaded in the AMS HT 2. Print the file ### Actual results The printer stops working and sits there at the initialization step after heatbed has reached temp,when it normally feeds the filament from the AMS-HT into the hotend. ### Expected results The print starts successfully. ### Project file & Debug log uploads [debug_Wed_Nov_26_23_51_15_87839.log.0.txt](https://github.com/user-attachments/files/23784891/debug_Wed_Nov_26_23_51_15_87839.log.0.txt) [Cube.zip](https://github.com/user-attachments/files/23784893/Cube.zip) ### Checklist of files to include - [x] Log file - [x] Project file ### Anything else? Tested with the latest stable version 2.3.1 of Orcaslicer, and the issue does not occur. Hoping someone with an AMS HT can reproduce. The issue is occurring with a build using the latest commit on main, [7ec32fc](https://github.com/OrcaSlicer/OrcaSlicer/commit/7ec32fc48411b6ec909f8e8ec971de447934eab3). With the latest commit on main, there is no issue printing from the AMS 2 Pro - only the AMS HT. The AMS HT shows up in Orcaslicer, and I can see the serial number of the HT and other details in the P1S screen. I have the 6 pin cables connected from the P1S -> AMS 2 Pro -> AMS HT.

MrUnknownDE closed this issue

2026-04-05 18:04:10 +02:00

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Reference: github/OrcaSlicer#1496