Gtk-ERROR **: in LSD SLAM

[datla-k]

(DebugWindow DEPTH:10143): Gtk-ERROR **: 12:08:58.421: GTK+ 2.x symbols detected. Using GTK+ 2.x and GTK+ 3 in the same process is not supported
Trace/breakpoint trap (core dumped)

I am getting this when I am running this command:
rosrun lsd_slam_core live_slam image:=/image_raw camera_info:=/camera_info

How to solve this?

[ashwinsivakumar-18]

Check which GTK versions are installed

pkg-config --modversion gtk+-2.0 # Check if GTK2 is available
pkg-config --modversion gtk+-3.0 # Check if GTK3 is available

Check which GTK version OpenCV is using (look for GTK+ 2.x or GTK+ 3.x in the output)
python3 -c "import cv2; print(cv2.getBuildInformation())" | grep GTK

Rebuild OpenCV with the correct GTK version (usually GTK2 for LSD-SLAM)
Download OpenCV source and run:
cmake -D CMAKE_BUILD_TYPE=RELEASE
-D CMAKE_INSTALL_PREFIX=/usr/local
-D WITH_GTK=ON
-D WITH_GTK_2_X=ON \ # Use OFF instead if you need GTK3
..
make -j$(nproc)
sudo make install

• Optional: If you don’t need GUI (viewer), disable visualization in LSD-SLAM source
• Comment out or disable GUI code in Viewer.cpp or wherever OpenCV windows are used
• Risky workaround (not recommended long-term, may crash):
• Forces GTK2 to load first to avoid GTK+ 2/3 conflict

LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so rosrun lsd_slam_core live_slam image:=/image_raw camera_info:=/camera_info

Best Practice: Ensure all your components (OpenCV, Pangolin, LSD-SLAM) use the same GTK version — ideally GTK2 for compatibility with older ROS tools.