Orca crashes under KDE Plasma Wayland when slicer detailed model (NVIDIA PGU) #1287

New Issue

MrUnknownDE · 2026-04-05T17:12:01+02:00

MrUnknownDE commented

2026-04-05 17:12:01 +02:00

Originally created by @turw41th on 12/23/2025

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.1

Operating System (OS)

Linux

OS Version

CachyOS

Additional system information

OS: CachyOS x86_64
Kernel: Linux 6.18.2-2-cachyos
DE: KDE Plasma 6.5.4
WM: KWin (Wayland)
CPU: Intel(R) Core(TM) i9-10920X (24) @ 4.80 GHz
GPU: NVIDIA GeForce RTX 3080 Lite Hash Rate [Discrete]

Printer

Qidi Plus 4

How to reproduce

Open detailed stl file (D&D miniature in my case) (24MB in size)
Slice with high details (0.06mm layer height, 0.2mm nozzle
Wait

Actual results

At slicing layer 630 (which actually is the last layer), Orca freezes and then crashes. The last few lines in the console are

MESA: error: zink: couldn't allocate memory: heap=3 size=4194304
MESA: error: zink: couldn't allocate memory: heap=3 size=4194304
MESA: error: zink: couldn't allocate memory: heap=3 size=4194304
MESA: error: zink: couldn't allocate memory: heap=3 size=4194304
MESA: error: zink: couldn't allocate memory: heap=3 size=4194304
MESA: error: zink: couldn't allocate memory: heap=3 size=4194304
MESA: error: zink: couldn't allocate memory: heap=3 size=4194304
MESA: error: zink: couldn't allocate memory: heap=3 size=2097152
MESA: error: ZINK: vkMapMemory failed (VK_ERROR_MEMORY_MAP_FAILED)
[1]    346626 segmentation fault (core dumped)

This only happens under Wayland. On X11, slicing is perfectly fine.

Also, Orca crashes when I switch to the device tab, but that's another issue.

Expected results

Model should slice without crashing.

Project file & Debug log uploads

Wayland-Crash.zip
coredump.txt

Checklist of files to include

Log file
Project file

Anything else?

Log files don't seem to be created when this crash occurs. I uploaded the core dump instead.

*Originally created by @turw41th on 12/23/2025* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.1 ### Operating System (OS) Linux ### OS Version CachyOS ### Additional system information OS: CachyOS x86_64 Kernel: Linux 6.18.2-2-cachyos DE: KDE Plasma 6.5.4 WM: KWin (Wayland) CPU: Intel(R) Core(TM) i9-10920X (24) @ 4.80 GHz GPU: NVIDIA GeForce RTX 3080 Lite Hash Rate [Discrete] ### Printer Qidi Plus 4 ### How to reproduce - Open detailed stl file (D&D miniature in my case) (24MB in size) - Slice with high details (0.06mm layer height, 0.2mm nozzle - Wait ### Actual results At slicing layer 630 (which actually is the last layer), Orca freezes and then crashes. The last few lines in the console are ``` MESA: error: zink: couldn't allocate memory: heap=3 size=4194304 MESA: error: zink: couldn't allocate memory: heap=3 size=4194304 MESA: error: zink: couldn't allocate memory: heap=3 size=4194304 MESA: error: zink: couldn't allocate memory: heap=3 size=4194304 MESA: error: zink: couldn't allocate memory: heap=3 size=4194304 MESA: error: zink: couldn't allocate memory: heap=3 size=4194304 MESA: error: zink: couldn't allocate memory: heap=3 size=4194304 MESA: error: zink: couldn't allocate memory: heap=3 size=2097152 MESA: error: ZINK: vkMapMemory failed (VK_ERROR_MEMORY_MAP_FAILED) [1] 346626 segmentation fault (core dumped) ``` This only happens under Wayland. On X11, slicing is perfectly fine. Also, Orca crashes when I switch to the device tab, but that's another issue. ### Expected results Model should slice without crashing. ### Project file & Debug log uploads [Wayland-Crash.zip](https://github.com/user-attachments/files/24318674/Wayland-Crash.zip) [coredump.txt](https://github.com/user-attachments/files/24318731/coredump.txt) ### Checklist of files to include - [x] Log file - [x] Project file ### Anything else? Log files don't seem to be created when this crash occurs. I uploaded the core dump instead.

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Reference: github/OrcaSlicer#1287