Your message dated Mon, 23 Feb 2026 09:19:54 +0000
with message-id <[email protected]>
and subject line Bug#1128614: fixed in cura 5.0.0-7
has caused the Debian Bug report #1128614,
regarding /usr/bin/cura: not compatible with current numpy in Unstable
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
1128614: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1128614
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: cura
Version: 5.0.0-6
Severity: normal
File: /usr/bin/cura
Tags: upstream
Dear Maintainer,
I'm running Unstable with python3-numpy 1:2.3.5+ds-3 and Preview doesn't
work. Slider indicator slides and nothing happens.
There is an output in the terminal:
2026-02-21 22:05:43,267 - ERROR - [JobQueueWorker [3]] UM.JobQueue.run [135]:
Exception: Job <CuraEngineBackend.ProcessSlicedLayersJob.ProcessSlicedLayersJob
object at 0x7ff8fb779e80> caused an exception on worker JobQueueWorker [3]
2026-02-21 22:05:43,269 - ERROR - [JobQueueWorker [3]] UM.JobQueue.run [135]:
Traceback (most recent call last):
2026-02-21 22:05:43,270 - ERROR - [JobQueueWorker [3]] UM.JobQueue.run [135]:
File "/usr/lib/python3/dist-packages/UM/JobQueue.py", line 133, in run
2026-02-21 22:05:43,270 - ERROR - [JobQueueWorker [3]] UM.JobQueue.run [135]:
job.run()
2026-02-21 22:05:43,271 - ERROR - [JobQueueWorker [3]] UM.JobQueue.run [135]:
~~~~~~~^^
2026-02-21 22:05:43,271 - ERROR - [JobQueueWorker [3]] UM.JobQueue.run [135]:
File "/usr/lib/cura/plugins/CuraEngineBackend/ProcessSlicedLayersJob.py",
line 143, in run
2026-02-21 22:05:43,272 - ERROR - [JobQueueWorker [3]] UM.JobQueue.run [135]:
line_types = numpy.fromstring(polygon.line_type, dtype = "u1") # Convert
bytearray to numpy array
2026-02-21 22:05:43,273 - ERROR - [JobQueueWorker [3]] UM.JobQueue.run [135]:
ValueError: The binary mode of fromstring is removed, use frombuffer instead
I tried to replace several calls numpy.fromstring() → numpy.frombuffer() and
the program runs a bit longer, but finally fails on another problems…
2026-02-21 22:19:06,263 - DEBUG - [MainThread]
CuraEngineBackend.CuraEngineBackend._onProcessLayersFinished [996]: See if
there is more to slice(2)...
2026-02-21 22:19:06,269 - CRITICAL - [MainThread] cura.CrashHandler.__init__
[66]: An uncaught error has occurred!
2026-02-21 22:19:06,272 - CRITICAL - [MainThread] cura.CrashHandler.__init__
[69]: Traceback (most recent call last):
2026-02-21 22:19:06,272 - CRITICAL - [MainThread] cura.CrashHandler.__init__
[69]: File "/usr/lib/python3/dist-packages/UM/Qt/Bindings/MainWindow.py",
line 290, in _render
2026-02-21 22:19:06,272 - CRITICAL - [MainThread] cura.CrashHandler.__init__
[69]: renderer.render()
2026-02-21 22:19:06,273 - CRITICAL - [MainThread] cura.CrashHandler.__init__
[69]: ~~~~~~~~~~~~~~~^^
2026-02-21 22:19:06,273 - CRITICAL - [MainThread] cura.CrashHandler.__init__
[69]: File "/usr/lib/python3/dist-packages/UM/Qt/QtRenderer.py", line 164, in
render
2026-02-21 22:19:06,273 - CRITICAL - [MainThread] cura.CrashHandler.__init__
[69]: render_pass.render()
2026-02-21 22:19:06,273 - CRITICAL - [MainThread] cura.CrashHandler.__init__
[69]: ~~~~~~~~~~~~~~~~~~^^
2026-02-21 22:19:06,273 - CRITICAL - [MainThread] cura.CrashHandler.__init__
[69]: File "/usr/lib/cura/plugins/SimulationView/SimulationPass.py", line
189, in render
2026-02-21 22:19:06,273 - CRITICAL - [MainThread] cura.CrashHandler.__init__
[69]: layers_batch.render(self._scene.getActiveCamera())
2026-02-21 22:19:06,273 - CRITICAL - [MainThread] cura.CrashHandler.__init__
[69]: ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-21 22:19:06,274 - CRITICAL - [MainThread] cura.CrashHandler.__init__
[69]: File "/usr/lib/python3/dist-packages/UM/View/RenderBatch.py", line 231,
in render
2026-02-21 22:19:06,274 - CRITICAL - [MainThread] cura.CrashHandler.__init__
[69]: self._renderItem(item)
2026-02-21 22:19:06,274 - CRITICAL - [MainThread] cura.CrashHandler.__init__
[69]: ~~~~~~~~~~~~~~~~^^^^^^
2026-02-21 22:19:06,274 - CRITICAL - [MainThread] cura.CrashHandler.__init__
[69]: File "/usr/lib/python3/dist-packages/UM/View/RenderBatch.py", line 262,
in _renderItem
2026-02-21 22:19:06,274 - CRITICAL - [MainThread] cura.CrashHandler.__init__
[69]: vertex_buffer = OpenGL.getInstance().createVertexBuffer(mesh)
2026-02-21 22:19:06,274 - CRITICAL - [MainThread] cura.CrashHandler.__init__
[69]: File "/usr/lib/python3/dist-packages/UM/View/GL/OpenGL.py", line 282,
in createVertexBuffer
2026-02-21 22:19:06,275 - CRITICAL - [MainThread] cura.CrashHandler.__init__
[69]: attribute_byte_array = attribute["value"].tostring()
2026-02-21 22:19:06,275 - CRITICAL - [MainThread] cura.CrashHandler.__init__
[69]: ^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-21 22:19:06,275 - CRITICAL - [MainThread] cura.CrashHandler.__init__
[69]: AttributeError: 'numpy.ndarray' object has no attribute 'tostring'
Thanks
--
Zito
-- System Information:
Debian Release: forky/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 6.18.12+deb14-amd64 (SMP w/8 CPU threads; PREEMPT)
Locale: LANG=en_US.UTF-8, LC_CTYPE=cs_CZ.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages cura depends on:
ii cura-engine 1:5.0.0-6
ii fdm-materials 5.0.0-3
ii fonts-open-sans 1.11-2
ii python3 3.13.9-3
ii python3-certifi 2026.1.4+ds-1
ii python3-charon 5.0.0-5
ii python3-cryptography 46.0.5-1
ii python3-keyring 25.7.0-1
ii python3-pynest2d 5.0.0-3+b6
ii python3-pyqt6 6.10.2-2
ii python3-requests 2.32.5+dfsg-1
ii python3-savitar 5.0.0-4.1+b7
ii python3-sentry-sdk 2.22.0-1
ii python3-serial 3.5-2
ii python3-shapely 2.1.2-1+b1
ii python3-trimesh 4.5.1-3
ii python3-uranium 5.0.0-7
ii python3-zeroconf 0.148.0-2
ii qml6-module-qt-labs-folderlistmodel 6.9.2+dfsg-5
ii qml6-module-qtqml-workerscript 6.9.2+dfsg-5
ii qml6-module-qtquick-controls 6.9.2+dfsg-5
ii qml6-module-qtquick-dialogs 6.9.2+dfsg-5
ii qml6-module-qtquick-layouts 6.9.2+dfsg-5
ii qml6-module-qtquick-templates 6.9.2+dfsg-5
ii qml6-module-qtquick-window 6.9.2+dfsg-5
ii qt6-qpa-plugins 6.9.2+dfsg-4
ii uranium-plugins 5.0.0-7
cura recommends no packages.
cura suggests no packages.
-- no debconf information
--- /usr/lib/cura/plugins/CuraEngineBackend/ProcessSlicedLayersJob.py.orig
2022-05-17 10:08:13.000000000 +0200
+++ /usr/lib/cura/plugins/CuraEngineBackend/ProcessSlicedLayersJob.py
2026-02-21 21:54:09.663743850 +0100
@@ -140,23 +140,23 @@
extruder = polygon.extruder
- line_types = numpy.fromstring(polygon.line_type, dtype = "u1")
# Convert bytearray to numpy array
+ line_types = numpy.frombuffer(polygon.line_type, dtype = "u1")
# Convert bytearray to numpy array
line_types = line_types.reshape((-1,1))
- points = numpy.fromstring(polygon.points, dtype = "f4") #
Convert bytearray to numpy array
+ points = numpy.frombuffer(polygon.points, dtype = "f4") #
Convert bytearray to numpy array
if polygon.point_type == 0: # Point2D
points = points.reshape((-1,2)) # We get a linear list of
pairs that make up the points, so make numpy interpret them correctly.
else: # Point3D
points = points.reshape((-1,3))
- line_widths = numpy.fromstring(polygon.line_width, dtype =
"f4") # Convert bytearray to numpy array
+ line_widths = numpy.frombuffer(polygon.line_width, dtype =
"f4") # Convert bytearray to numpy array
line_widths = line_widths.reshape((-1,1)) # We get a linear
list of pairs that make up the points, so make numpy interpret them correctly.
- line_thicknesses = numpy.fromstring(polygon.line_thickness,
dtype = "f4") # Convert bytearray to numpy array
+ line_thicknesses = numpy.frombuffer(polygon.line_thickness,
dtype = "f4") # Convert bytearray to numpy array
line_thicknesses = line_thicknesses.reshape((-1,1)) # We get
a linear list of pairs that make up the points, so make numpy interpret them
correctly.
- line_feedrates = numpy.fromstring(polygon.line_feedrate, dtype
= "f4") # Convert bytearray to numpy array
+ line_feedrates = numpy.frombuffer(polygon.line_feedrate, dtype
= "f4") # Convert bytearray to numpy array
line_feedrates = line_feedrates.reshape((-1,1)) # We get a
linear list of pairs that make up the points, so make numpy interpret them
correctly.
# Create a new 3D-array, copy the 2D points over and insert
the right height.
--- End Message ---
--- Begin Message ---
Source: cura
Source-Version: 5.0.0-7
Done: Gregor Riepl <[email protected]>
We believe that the bug you reported is fixed in the latest version of
cura, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Gregor Riepl <[email protected]> (supplier of updated cura package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Mon, 23 Feb 2026 10:02:21 +0100
Source: cura
Architecture: source
Version: 5.0.0-7
Distribution: unstable
Urgency: medium
Maintainer: Debian 3-D Printing Packages
<[email protected]>
Changed-By: Gregor Riepl <[email protected]>
Closes: 1128614
Changes:
cura (5.0.0-7) unstable; urgency=medium
.
* Fix numpy 2.3.0+ deprecation.
Closes: #1128614
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