Segfault on startup

Operating System Info

Other

Other OS

Manjaro Linux

OBS Studio Version

32.1.2

OBS Studio Version (Other)

32.1.2-2

OBS Studio Log URL

na

OBS Studio Crash Log URL

na

Expected Behavior

Being able to start OBS

Current Behavior

Starting OBS from a terminal, it throws a segfault:

Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8.
Qt depends on a UTF-8 locale, and has switched to "C.UTF-8" instead.
If this causes problems, reconfigure your locale. See the locale(1) manual
for more information.
debug: Found portal inhibitor
debug: Attempted path: /usr/bin/../share/obs/obs-studio/locale/en-US.ini
debug: Attempted path: /usr/bin/../share/obs/obs-studio/themes
debug: Attempted path: /usr/bin/../share/obs/obs-studio/themes/
warning: Crash or unclean shutdown detected
qt.qpa.services: Failed to register with host portal QDBusError("org.freedesktop.portal.Error.Failed", "Could not register app ID: Connection already associated with an application ID")
warning: [Safe Mode] Normal launch selected, loading third-party plugins is enabled
info: Using EGL/X11
info: CPU Name: Intel(R) Xeon(R) CPU E5-1620 0 @ 3.60GHz
info: CPU Speed: 3125.951MHz
info: Physical Cores: 4, Logical Cores: 8
info: Physical Memory: 32050MB Total, 13810MB Free
info: Kernel Version: Linux 7.0.6-xanmod1-1-x64v2
info: Distribution: "Manjaro Linux" Unknown
info: Desktop Environment: XFCE (xfce)
info: Session Type: x11
info: Window System: X11.0, Vendor: The X.Org Foundation, Version: 1.21.1
info: Current Date/Time: 2026-05-17, 19:48:51
info: Browser Hardware Acceleration: true
info: Qt Version: 6.11.1 (runtime), 6.11.0 (compiled)
info: Portable mode: false
info: OBS 32.1.2 (linux)
info: ---------------------------------
info: ---------------------------------
info: audio settings reset:
samples per sec: 48000
speakers: 2
max buffering: 960 milliseconds
buffering type: dynamically increasing
info: ---------------------------------
info: Initializing OpenGL...
info: Loading up OpenGL on adapter NVIDIA Corporation NVIDIA GeForce GTX 970/PCIe/SSE2
info: OpenGL loaded successfully, version 3.3.0 NVIDIA 580.159.03, shading language 3.30 NVIDIA via Cg compiler
info: ---------------------------------
info: video settings reset:
base resolution: 1360x768
output resolution: 1272x720
downscale filter: Bicubic
fps: 30/1
format: NV12
YUV mode: Rec. 709/Partial
info: NV12 texture support enabled
info: P010 texture support not available
info: Audio monitoring device:
name: Default
id: default
info: ---------------------------------
warning: Failed to load 'en-US' text for module: 'decklink-captions.so'
warning: Failed to load 'en-US' text for module: 'decklink-output-ui.so'
libDeckLinkAPI.so: cannot open shared object file: No such file or directory
warning: A DeckLink iterator could not be created. The DeckLink drivers may not be installed
warning: Failed to initialize module 'decklink.so'
info: [pipewire] No capture sources available
Segmentation fault (core dumped) export LC_ALL=C | obs

dmesg reveals following:

152638.162254] obs[514190]: segfault at d8 ip 00007fb8db2e5864 sp 00007ffd5c6e41e8 error 4 in libX11.so.6.4.0[27864,7fb8db2d5000+95000] likely on CPU 0 (core 0, socket 0)
[152638.162266] Code: 84 00 00 00 00 00 f3 0f 1e fa 8b 47 1c c3 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 8b 47 74 c3 0f 1f 84 00 00 00 00 00 f3 0f 1e fa <48> 8b 87 d8 00 00 00 c3 0f 1f 40 00 f3 0f 1e fa 48 63 f6 48 c1 e6

Anything else we should know?

System is up to date.

Start by reproducing the reported export LC_ALL=C | obs launch on Manjaro with OBS 32.1.2, then compare it with a UTF-8 locale and inspect the reported libX11 failure in dmesg. Done means identifying the startup condition that causes the segfault and confirming that OBS launches successfully without it.