obs-studio
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snapcrafters
[Bug]: Crash when using more than one pipewire source
What happened?
Obs craches when attempting to use more that one pipewire source (Screen or window capture). The crash occurs at the moment the new pipewire source is selected in the menu after adding the source to the scene.
Note that this might be a linux-related pipewire issue and not a snap issue.
What should have happened?
The new source should become visible in OBS' preview
Output of snap info $snap_name
name: obs-studio
summary: Free and open source software for live streaming and screen recording
publisher: Snapcrafters
store-url: https://snapcraft.io/obs-studio
contact: https://github.com/snapcrafters/obs-studio/issues
license: GPL-2.0
description: |
OBS Studio is software designed for capturing, compositing, encoding, recording, and streaming
video content, efficiently. _This is a community-supported modified build of OBS Studio; please
file issues on the Snapcrafters GitHub:_ https://github.com/snapcrafters/obs-studio/issues
**Batteries included**
The snap of OBS studio comes pre-loaded with some extra features:
* Supports **nvenc (NVIDIA) and VA-API (AMD & Intel) accelerated video encoding**.
* **Advanced Scene Switcher** plugin; an automated scene switcher
* **Browser** plugin; CEF-based OBS Studio browser plugin
* **Directory Watch Media** plugin; filter you can add to a media source to load the oldest or
newest file in a directory.
* **Dynamic Delay** plugin; filter for dynamic delaying a video source.
* **Freeze Filter** plugin; freeze a source using a filter.
* **gPhoto** plugin; connect DSLR cameras with obs-studio via gPhoto.
* **GStreamer** plugins; feed GStreamer launch pipelines into OBS Studio and use GStreamer
encoder elements.
* **Move Transition** plugin; move sources to a new position during a scene transition.
* **NDI** plugin; Network A/V via NewTek's NDI.
* **NvFBC** plugin; screen capture via NVIDIA FBC API. Requires NvFBC patches for Nvidia drivers
for consumer-grade GPUs.
* **RGB Levels** plugin; simple filter to adjust RGB levels.
* **Source Switcher** plugin; to switch between a list of sources.
* **Spectralizer** plugin; audio visualization using fftw.
* **StreamFX** plugin; collection modern effects filters and transitions.
* **Text Pango** plugin; Provides a text source rendered using Pango with multi-language
support, emoji support, vertical rendering and RTL support.
* **Transition Matrix** plugin; customize Any -> One or One -> One scene transitions.
* **VNC Source** plugin; VNC viewer that works as a source.
* **Websockets** plugin; remote-control OBS Studio through WebSockets.
**Connecting Interfaces**
For the best experience, you'll want to connect the following interfaces.
sudo snap connect obs-studio:alsa
sudo snap connect obs-studio:audio-record
sudo snap connect obs-studio:avahi-control
sudo snap connect obs-studio:camera
sudo snap connect obs-studio:jack1
sudo snap connect obs-studio:kernel-module-observe
**NDI**
If you want to use the NDI plugin you'll need to connect the Avahi Control interface.
snap connect obs-studio:avahi-control
**Virtual Camera**
Starting with OBS 26.1.0, Virtual Camera support is integrated. Here's how to install and
configure `v4l2loopback`:
sudo snap connect obs-studio:kernel-module-observe
sudo apt -y install v4l2loopback-dkms v4l2loopback-utils
echo "options v4l2loopback devices=1 video_nr=13 card_label='OBS Virtual Camera'
exclusive_caps=1" | sudo tee /etc/modprobe.d/v4l2loopback.conf
echo "v4l2loopback" | sudo tee /etc/modules-load.d/v4l2loopback.conf
sudo modprobe -r v4l2loopback
sudo modprobe v4l2loopback devices=1 video_nr=13 card_label='OBS Virtual Camera'
exclusive_caps=1
**NOTE!** Using `video_nr` greater than 64 will not work.
**Removable Storage**
To access content on external storage, connect to the removable-media plug:
snap connect obs-studio:removable-media
**gPhoto**
The gPhoto plugin allows some DSLR cameras to be connected via USB. You'll need to connect the Raw
USB interface.
snap connect obs-studio:raw-usb
**3rd Party plugins**
To install pre-compiled plugins, download and extract the plugin to
`~/snap/obs-studio/current/.config/obs-studio/plugins/`.
This is how the Input Overlay plugin looks when correctly installed:
/home/username/snap/obs-studio/current/.config/obs-studio/plugins/
└── input-overlay
├── bin
│ └── 64bit
│ └── input-overlay.so
└── data
└── locale
├── de-DE.ini
├── en-US.ini
└── ru-RU.ini
If you want to use the Input Overlay plugin, you'll also need to connect the joystick interface:
snap connect obs-studio:joystick
commands:
- obs-studio.eglinfo
- obs-studio.ffmpeg
- obs-studio.ffplay
- obs-studio.ffprobe
- obs-studio.glxinfo
- obs-studio
- obs-studio.srt-ffplay
- obs-studio.srt-file-transmit
- obs-studio.srt-live-transmit
- obs-studio.srt-tunnel
- obs-studio.vainfo
- obs-studio.vdpauinfo
- obs-studio.vulkaninfo
snap-id: 6uLU2MJmBURfLNz4rmL4WT2CmtVULE2u
tracking: latest/stable
refresh-date: 2022-07-29
channels:
latest/stable: 27.1.3 2021-12-20 (1284) 418MB -
latest/candidate: ↑
latest/beta: ↑
latest/edge: 27.2.1 2022-02-24 (1287) 439MB -
installed: 27.1.3 (1284) 418MB -
Output of snap connections $snap_name
Interface Plug Slot Notes
alsa obs-studio:alsa :alsa manual
audio-playback obs-studio:audio-playback :audio-playback -
audio-record obs-studio:audio-record :audio-record -
avahi-control obs-studio:avahi-control :avahi-control manual
browser-support obs-studio:browser-support :browser-support -
camera obs-studio:camera :camera -
content[gtk-3-themes] obs-studio:gtk-3-themes gtk-common-themes:gtk-3-themes -
content[icon-themes] obs-studio:icon-themes gtk-common-themes:icon-themes -
content[sound-themes] obs-studio:sound-themes gtk-common-themes:sound-themes -
desktop obs-studio:desktop :desktop -
desktop-legacy obs-studio:desktop-legacy :desktop-legacy -
gsettings obs-studio:gsettings :gsettings -
hardware-observe obs-studio:hardware-observe - -
home obs-studio:home :home -
jack1 obs-studio:jack1 :jack1 manual
joystick obs-studio:joystick :joystick manual
kernel-module-observe obs-studio:kernel-module-observe :kernel-module-observe manual
network obs-studio:network :network -
network-bind obs-studio:network-bind :network-bind -
opengl obs-studio:opengl :opengl -
password-manager-service obs-studio:password-manager-service - -
process-control obs-studio:process-control :process-control manual
pulseaudio obs-studio:pulseaudio :pulseaudio -
raw-usb obs-studio:raw-usb :raw-usb manual
removable-media obs-studio:removable-media - -
screen-inhibit-control obs-studio:screen-inhibit-control :screen-inhibit-control -
screencast-legacy obs-studio:screencast-legacy :screencast-legacy manual
system-observe obs-studio:system-observe - -
unity7 obs-studio:unity7 :unity7 -
upower-observe obs-studio:upower-observe :upower-observe -
wayland obs-studio:wayland :wayland -
x11 obs-studio:x11 :x11 -
Output of snap version
snap 2.57.2
snapd 2.57.2
series 16
ubuntu 22.04
kernel 5.15.0-48-generic
Relevant log output
# /var/log/syslog, nothing in kernel logs
Oct 3 17:35:08 CoreWorkstation obs-studio_obs-studio.desktop[472662]: info: [pipewire] desktop selected, setting up screencast
Oct 3 17:35:08 CoreWorkstation obs-studio_obs-studio.desktop[472662]: [W][21380.829371][ module-rtkit.c: 196 translate_error()] RTKit error: org.freedesktop.DBus.Error.AccessDenied
Oct 3 17:35:08 CoreWorkstation obs-studio_obs-studio.desktop[472662]: [W][21380.829394][ module-rtkit.c: 456 set_nice()] could not set nice-level to -11: Permission denied
Oct 3 17:35:08 CoreWorkstation obs-studio_obs-studio.desktop[472662]: [W][21380.829492][ module-rtkit.c: 196 translate_error()] RTKit error: org.freedesktop.DBus.Error.AccessDenied
Oct 3 17:35:08 CoreWorkstation obs-studio_obs-studio.desktop[472662]: [E][21380.829627][module-protocol-: 609 lock_socket()] server 0x5643552ee210: unable to lock lockfile '/run/user/1000/snap.obs-studio/pipewire-0.lock': Resource temporarily unavailable (maybe another daemon is running)
Oct 3 17:35:08 CoreWorkstation obs-studio_obs-studio.desktop[472662]: [E][21380.829655][ conf.c: 332 load_module()] config 0x564355252fb0: could not load mandatory module "libpipewire-module-protocol-native": Resource temporarily unavailable
Oct 3 17:35:08 CoreWorkstation systemd[3020]: snap.obs-studio.obs-studio.85523d08-ca62-4414-b9ec-7e0c46ba9080.scope: Consumed 38.225s CPU time.
Teminal output of app
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
info: [pipewire] screencast session created
Attempted path: share/obs/obs-studio/images/overflow.png
Attempted path: /usr/share/obs/obs-studio/images/overflow.png
info: [pipewire] asking for desktop…
info: adding 42 milliseconds of audio buffering, total audio buffering is now 42 milliseconds (source: Mic/Aux)
info: [pipewire] desktop selected, setting up screencast
[W][22589.602031][ module-rtkit.c: 196 translate_error()] RTKit error: org.freedesktop.DBus.Error.AccessDenied
[W][22589.602039][ module-rtkit.c: 456 set_nice()] could not set nice-level to -11: Permission denied
[W][22589.602114][ module-rtkit.c: 196 translate_error()] RTKit error: org.freedesktop.DBus.Error.AccessDenied
[W][22589.604421][ module-rtkit.c: 196 translate_error()] RTKit error: org.freedesktop.DBus.Error.AccessDenied
[W][22589.604492][ module-rtkit.c: 196 translate_error()] RTKit error: org.freedesktop.DBus.Error.AccessDenied
[W][22589.604496][ module-rtkit.c: 629 impl_acquire_rt()] could not make thread realtime: Permission denied
info: [pipewire] created stream 0x558019f87960
info: [pipewire] playing stream…
info: [pipewire] available cursor modes:
info: [pipewire] - Metadata
info: [pipewire] - Always visible
info: [pipewire] - Hidden
info: PipeWire initialized (sender name: 1_4796)
info: User added source 'Window Capture (PipeWire)' (pipewire-window-capture-source) to scene 'Scene_dev'
info: [pipewire] screencast session created
info: [pipewire] asking for window…
info: [pipewire] window selected, setting up screencast
[W][22604.921985][ module-rtkit.c: 196 translate_error()] RTKit error: org.freedesktop.DBus.Error.AccessDenied
[W][22604.921995][ module-rtkit.c: 456 set_nice()] could not set nice-level to -11: Permission denied
[W][22604.922072][ module-rtkit.c: 196 translate_error()] RTKit error: org.freedesktop.DBus.Error.AccessDenied
[E][22604.922159][module-protocol-: 609 lock_socket()] server 0x55801cbd9070: unable to lock lockfile '/run/user/1000/snap.obs-studio/pipewire-0.lock': Resource temporarily unavailable (maybe another daemon is running)
[E][22604.922195][ conf.c: 332 load_module()] config 0x55801b33f080: could not load mandatory module "libpipewire-module-protocol-native": Resource temporarily unavailable
Segmentation fault (core dumped)
