Bug 2494006

Summary:	materialx 1.39.5-1 is binary incompatible with 1.39.4
Product:	[Fedora] Fedora	Reporter:	Bruno Postle <bruno>
Component:	usd	Assignee:	Luya Tshimbalanga <luya_tfz>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	43	CC:	adriacabellocrespo, ali.koroglu, code, luya_tfz, multimedia-sig, negativo17
Target Milestone:	---	Keywords:	Desktop
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	usd-25.08-21.fc43	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-07-04 01:06:54 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Bruno Postle 2026-06-28 17:43:48 UTC

blender fails to start because of a symbol error in materialx 1.39.5-1

To reproduce:

$ blender
blender: symbol lookup error: /lib64/libusd_ms.so.0.25.8: undefined symbol: _ZTIN17MaterialX_v1_39_47ElementE

Downgrading to materialx-1.39.4-3.fc43.x86_64.rpm (built 15 Feb 2026) fixes the problem, so presumably usd-libs or blender (or both) needs to be rebuilt against this new materialx.

Reproducible: Always

Comment 1 Ben Beasley 2026-06-28 17:48:30 UTC

Same situation as bug 2492227 and bug 2492656; read those for details. Check https://bodhi.fedoraproject.org/updates/FEDORA-2026-5f0e71928f.

Comment 2 Fedora Update System 2026-06-29 04:34:55 UTC

FEDORA-2026-5f0e71928f (blender-5.1.2-3.fc43 and usd-25.08-21.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-5f0e71928f

Comment 3 Fedora Update System 2026-07-04 01:06:54 UTC

FEDORA-2026-5f0e71928f (blender-5.1.2-3.fc43 and usd-25.08-21.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.