segmentation fault (core dumped)

[Muhammad1331]

Hi i am getting below error. Please help me with the issue.

muhammadratul@ubuntu:~/RGBD_SLAM_PCL_MAP$ sh RGBD_SLAM_run.sh

ORB-SLAM2 Copyright (C) 2014-2016 Raul Mur-Artal, University of Zaragoza.
This program comes with ABSOLUTELY NO WARRANTY;
This is free software, and you are welcome to redistribute it
under certain conditions. See LICENSE.txt.

Input sensor was set to: RGB-D

Loading ORB Vocabulary. This could take a while...
Vocabulary loaded!

Camera Parameters:

• fx: 525
• fy: 525
• cx: 319.5
• cy: 239.5
• k1: 0
• k2: -0
• p1: 0
• p2: -0
• fps: 30
• color order: BGR (ignored if grayscale)

ORB Extractor Parameters:

• Number of Features: 1000
• Scale Levels: 8
• Scale Factor: 1.2
• Initial Fast Threshold: 20
• Minimum Fast Threshold: 7

Depth Threshold (Close/Far Points): 3.80952

---

Start processing sequence ...
Images in the sequence: 1934

-------------Frame nNextId: 0
-------------KeyFrame nNextId: 0
New map created with 974 points
---Initialize Done!---
-------------KeyFrame nNextId: 1
Framebuffer with requested attributes not available. Using available framebuffer. You may see visual artifacts.PCL thread receive a keyframe, id = 1
-------------KeyFrame nNextId: 2
PCL thread receive a keyframe, id = 2
-------------KeyFrame nNextId: 3
PCL thread receive a keyframe, id = 3
generate point cloud for kf 1, size=33118
generate point cloud for kf 2, size=33174
generate point cloud for kf 3, size=33161
-------------Frame nNextId: 10
-------------KeyFrame nNextId: 4
PCL thread receive a keyframe, id = 4
show global map, size=77889
-------------Frame nNextId: 20
-------------KeyFrame nNextId: 5
PCL thread receive a keyframe, id = 5
generate point cloud for kf 4, size=33109
Segmentation fault (core dumped)

[EricLYang]

Please refer this link to solve this problem:

raulmur/ORB_SLAM2#4

[Muhammad1331]

It's still giving me the same error even though I changed the file display_x11.cpp
Note: I am using Ubuntu 18.04 in mac os X.

muhammadratul@ubuntu:~/RGBD_SLAM_PCL_MAP$ sh RGBD_SLAM_run.sh

ORB-SLAM2 Copyright (C) 2014-2016 Raul Mur-Artal, University of Zaragoza.
This program comes with ABSOLUTELY NO WARRANTY;
This is free software, and you are welcome to redistribute it
under certain conditions. See LICENSE.txt.

Input sensor was set to: RGB-D

Loading ORB Vocabulary. This could take a while...
Vocabulary loaded!

Camera Parameters:

• fx: 525
• fy: 525
• cx: 319.5
• cy: 239.5
• k1: 0
• k2: -0
• p1: 0
• p2: -0
• fps: 30
• color order: BGR (ignored if grayscale)

ORB Extractor Parameters:

• Number of Features: 1000
• Scale Levels: 8
• Scale Factor: 1.2
• Initial Fast Threshold: 20
• Minimum Fast Threshold: 7

Depth Threshold (Close/Far Points): 3.80952

---

Start processing sequence ...
Images in the sequence: 1934

-------------Frame nNextId: 0
-------------KeyFrame nNextId: 0
New map created with 974 points
---Initialize Done!---
Framebuffer with requested attributes not available. Using available framebuffer. You may see visual artifacts.-------------KeyFrame nNextId: 1
PCL thread receive a keyframe, id = 1
generate point cloud for kf 1, size=33118
show global map, size=32879
-------------KeyFrame nNextId: 2
PCL thread receive a keyframe, id = 2
generate point cloud for kf 2, size=33174
Segmentation fault (core dumped)

[EricLYang]

I think something may go wrong with the 3D rendering, could you please check by run glxgears :
http://www.upubuntu.com/2013/11/how-to-check-3d-acceleration-fps-in.html

If this has some problem, then, pls let me know.

[Muhammad1331]

I checked the glxgears which are running fine in my ubuntu. I tried to google the problem but couldn't find any plausible solution. I would really appreciate if you can help me with that.

[EricLYang]

Another question, how much is your RAM, this ORB SLAM could take you 8G.

[Muhammad1331]

This is my mac system configuration.
MacBook Pro (13-inch, 2017, Two Thunderbolt 3 ports)
Processor 2.3 GHz Intel Core i5
Memory 8 GB 2133 MHz LPDDR3
Graphics Intel Iris Plus Graphics 640 1536 MB

BTW while I run the code the simulation gives me a glimpse of windows then it just stopped.

[gsubas]

You can try following

1. Go to Software & Updates
2. Click Additional Drivers
3. Select the proprietary driver and click Apply changes
   After the driver is installed restart the computer

[GITSHOHOKU]

This is my mac system configuration.
MacBook Pro (13-inch, 2017, Two Thunderbolt 3 ports)
Processor 2.3 GHz Intel Core i5
Memory 8 GB 2133 MHz LPDDR3
Graphics Intel Iris Plus Graphics 640 1536 MB

BTW while I run the code the simulation gives me a glimpse of windows then it just stopped.

hi ! This problem because of the Eigen version in Ubuntu18.04 is 3.3.4, you can solve this issue by replacing your eigen version to 3.1.0.