Crash on startup due to Pango/freetype2 #2374

New Issue

MrUnknownDE · 2026-04-06T05:21:11+02:00

MrUnknownDE commented

2026-04-06 05:21:11 +02:00

Originally created by @sTiKyt on 8/26/2025

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.2.0 - 2.3.0 (both AppImage and AUR)

(And newer versions as they come out, unless stated otherwise)

Operating System (OS)

Linux

OS Version

Arch Linux x86_64

Additional system information

Desktop: i3wm
RAM: 64 GB
GPU: NVIDIA GEFORCE RTX 3060
CPU: 12th Gen Intel i5-12600KF (16) @ 4.900GHz

Printer

Ender 3 V3 CoreXZ

How to reproduce

On Arch Linux, install OrcaSlicer (AppImage or AUR package).
Run orca-slicer
App crashes almost immediately, if you're fast enough you have about 5–10 seconds to send your print to 3D printer before it crashes

Segfault occurs inside libpangoft2-1.0.so.0 after repeated GTK criticals.
Downgrading freetype2 to 2.13.2-2 alone doesn't resolve the crash anymore, confirming regression.
Affected both AppImage and AUR builds.

Downgrading pango (1:1.56.4-1 => 1:1.52.2-1) helped and it doesn't crash anymore

Actual results

Backtrace:

Thread 1 "orcaslicer_main" received signal SIGSEGV, Segmentation fault.
0x00007ffff790f934 in ?? () from /usr/lib/libpangoft2-1.0.so.0
#1  0x00007ffff7910eb6 in ?? () from /usr/lib/libpangoft2-1.0.so.0
#2  0x00007ffff79144bf in ?? () from /usr/lib/libpangoft2-1.0.so.0
#3  0x00007ffff7914a8d in ?? () from /usr/lib/libpangoft2-1.0.so.0
#4  0x00007ffff70ce7fc in ?? () from /usr/lib/libpango-1.0.so.0

Output right before crash:

(orca-slicer-bin:9074): Gtk-CRITICAL **: 08:29:10.123: gtk_cell_layout_get_cells: assertion 'GTK_IS_CELL_LAYOUT (cell_layout)' failed
(orca-slicer-bin:9074): Gtk-CRITICAL **: 08:29:10.123: gtk_cell_layout_get_cells: assertion 'GTK_IS_CELL_LAYOUT (cell_layout)' failed
(orca-slicer-bin:9074): Gtk-CRITICAL **: 08:29:10.127: gtk_cell_layout_get_cells: assertion 'GTK_IS_CELL_LAYOUT (cell_layout)' failed
(orca-slicer-bin:9074): Gtk-CRITICAL **: 08:29:10.127: gtk_cell_layout_get_cells: assertion 'GTK_IS_CELL_LAYOUT (cell_layout)' failed
(orca-slicer-bin:9074): Gtk-CRITICAL **: 08:29:10.129: gtk_cell_layout_get_cells: assertion 'GTK_IS_CELL_LAYOUT (cell_layout)' failed
(orca-slicer-bin:9074): Gtk-CRITICAL **: 08:29:10.131: gtk_cell_layout_get_cells: assertion 'GTK_IS_CELL_LAYOUT (cell_layout)' failed
(orca-slicer-bin:9074): Gtk-CRITICAL **: 08:29:10.131: gtk_cell_layout_get_cells: assertion 'GTK_IS_CELL_LAYOUT (cell_layout)' failed
** (orca-slicer-bin:9074): CRITICAL **: 08:29:11.011: Cannot register URI scheme wxfs more than once
** (orca-slicer-bin:9074): CRITICAL **: 08:29:11.011: Cannot register URI scheme memory more than once
[1]    9074 segmentation fault (core dumped)  orca-slicer
  ╱  ~ ································································································································································································································································· SEGV ✘ ╱ 8s  
❯

Expected results

To work/not crash, obviously

Project file & Debug log uploads

Not really possible to attach logs through it's UI seing as it's dead

Checklist of files to include

Log file
Project file

Anything else?

Edit: Recommended workaround for now is to install orca-slicer-git, but compiling it may take you a while, took half an hour for me.

Older/Alternative Workaround:

Dirty fix/workaround for now is to downgrade the pango (DANGEROUS, downgrading on Arch may (will) break other packages, for example pavucontrol:

sudo pacman -U https://archive.archlinux.org/packages/f/freetype2/freetype2-2.13.2-2-x86_64.pkg.tar.zst
sudo pacman -U https://archive.archlinux.org/packages/p/pango/pango-1:1.52.2-1-x86_64.pkg.tar.zst

Workaround routine is to downgrade, use orca-slicer as intended, then update(pacman -Syu) the system back to latest so the rest of system works, that's the only workaround i've found so far, maybe it's worth turning into a script.

And don't close this because of "inactivity" if I don't manage to spam empty messages here daily or something, that's annoying, there are cases of this bug being reported and just closed by a bot, never reopened, because of "inactivity" or something like that… It's not supposed to be like that if the bug is real, come on… Also, if you're someone affected - I guess you better spam messages like "I have this problem too" so this report doesn't get closed if I'm away, thanks. I know it's not recommended for clarity, but seems like orca-slicer maintainers prefer that over clean reports

*Originally created by @sTiKyt on 8/26/2025* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.2.0 - 2.3.0 (both AppImage and AUR) (And newer versions as they come out, unless stated otherwise) ### Operating System (OS) Linux ### OS Version Arch Linux x86_64 ### Additional system information Desktop: i3wm RAM: 64 GB GPU: NVIDIA GEFORCE RTX 3060 CPU: 12th Gen Intel i5-12600KF (16) @ 4.900GHz ### Printer Ender 3 V3 CoreXZ ### How to reproduce 1. On Arch Linux, install OrcaSlicer (AppImage or AUR package). 2. Run orca-slicer 3. App crashes almost immediately, if you're fast enough you have about 5–10 seconds to send your print to 3D printer before it crashes Segfault occurs inside libpangoft2-1.0.so.0 after repeated GTK criticals. Downgrading freetype2 to 2.13.2-2 alone doesn't resolve the crash anymore, confirming regression. Affected both AppImage and AUR builds. Downgrading pango (1:1.56.4-1 => 1:1.52.2-1) helped and it doesn't crash anymore ### Actual results Backtrace: ``` Thread 1 "orcaslicer_main" received signal SIGSEGV, Segmentation fault. 0x00007ffff790f934 in ?? () from /usr/lib/libpangoft2-1.0.so.0 #1 0x00007ffff7910eb6 in ?? () from /usr/lib/libpangoft2-1.0.so.0 #2 0x00007ffff79144bf in ?? () from /usr/lib/libpangoft2-1.0.so.0 #3 0x00007ffff7914a8d in ?? () from /usr/lib/libpangoft2-1.0.so.0 #4 0x00007ffff70ce7fc in ?? () from /usr/lib/libpango-1.0.so.0 ``` Output right before crash: ``` (orca-slicer-bin:9074): Gtk-CRITICAL **: 08:29:10.123: gtk_cell_layout_get_cells: assertion 'GTK_IS_CELL_LAYOUT (cell_layout)' failed (orca-slicer-bin:9074): Gtk-CRITICAL **: 08:29:10.123: gtk_cell_layout_get_cells: assertion 'GTK_IS_CELL_LAYOUT (cell_layout)' failed (orca-slicer-bin:9074): Gtk-CRITICAL **: 08:29:10.127: gtk_cell_layout_get_cells: assertion 'GTK_IS_CELL_LAYOUT (cell_layout)' failed (orca-slicer-bin:9074): Gtk-CRITICAL **: 08:29:10.127: gtk_cell_layout_get_cells: assertion 'GTK_IS_CELL_LAYOUT (cell_layout)' failed (orca-slicer-bin:9074): Gtk-CRITICAL **: 08:29:10.129: gtk_cell_layout_get_cells: assertion 'GTK_IS_CELL_LAYOUT (cell_layout)' failed (orca-slicer-bin:9074): Gtk-CRITICAL **: 08:29:10.131: gtk_cell_layout_get_cells: assertion 'GTK_IS_CELL_LAYOUT (cell_layout)' failed (orca-slicer-bin:9074): Gtk-CRITICAL **: 08:29:10.131: gtk_cell_layout_get_cells: assertion 'GTK_IS_CELL_LAYOUT (cell_layout)' failed ** (orca-slicer-bin:9074): CRITICAL **: 08:29:11.011: Cannot register URI scheme wxfs more than once ** (orca-slicer-bin:9074): CRITICAL **: 08:29:11.011: Cannot register URI scheme memory more than once [1] 9074 segmentation fault (core dumped) orca-slicer  ╱  ~ ································································································································································································································································· SEGV ✘ ╱ 8s  ❯ ``` ### Expected results To work/not crash, obviously ### Project file & Debug log uploads Not really possible to attach logs through it's UI seing as it's dead ### Checklist of files to include - [ ] Log file - [ ] Project file ### Anything else? Edit: Recommended workaround for now is to install `orca-slicer-git`, but compiling it may take you a while, took half an hour for me. Older/Alternative Workaround: Dirty fix/workaround for now is to downgrade the pango (DANGEROUS, downgrading on Arch may (will) break other packages, for example pavucontrol: ``` sudo pacman -U https://archive.archlinux.org/packages/f/freetype2/freetype2-2.13.2-2-x86_64.pkg.tar.zst sudo pacman -U https://archive.archlinux.org/packages/p/pango/pango-1:1.52.2-1-x86_64.pkg.tar.zst ``` Workaround routine is to downgrade, use orca-slicer as intended, then update(`pacman -Syu`) the system back to latest so the rest of system works, that's the only workaround i've found so far, maybe it's worth turning into a script. And don't close this because of "inactivity" if I don't manage to spam empty messages here daily or something, that's annoying, there are cases of this bug being reported and just closed by a bot, never reopened, because of "inactivity" or something like that… It's not supposed to be like that if the bug is real, come on… Also, if you're someone affected - I guess you better spam messages like "I have this problem too" so this report doesn't get closed if I'm away, thanks. I know it's not recommended for clarity, but seems like orca-slicer maintainers prefer that over clean reports

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Reference: github/OrcaSlicer#2374