Orb_slam2: Pangolin X11: Unable to retrieve framebuffer options

[sunstarchan]

Hello,

when I follow these steps to run KITTI monocular example, I get following error.

terminate called after throwing an instance of 'std::runtime_error'
what(): Pangolin X11: Unable to retrieve framebuffer options
Aborted (core dumped)

I'm running it with Ubuntu running in Parallels on Mac.
What's the main reason for this issue?

Thanks.

[raulmur]

When do you get this error?

[sunstarchan]

@raulmur Thanks for your comment.

when I just run the KITTI example, after loading vocabulary.
I look into the Pangolin code, it seems that glXChooseFBConfig returned a NULL pointer in CreateX11Window().

I'm just wondering whether or not my virtual Ubuntu system doesn't connect to a real display, as I tested all Pangolin examples on Mac, all of them can work correct.

So does Pangolin support virtual system running in Parallels, VirtualBox or VMware player?

[sunstarchan]

I got another notebook with Ubuntu install on real hardware, and followed all these steps, I could run these examples. So maybe Pangolin needs to a real display.

BTW, your work is awesome, thanks for sharing.

[sunstarchan]

I finally got ORB_SLAM2 run successfully on my virtual Ubuntu system by commenting two lines of Pangolin as explained here.

https://github.com/stevenlovegrove/Pangolin/issues/74#issuecomment-178248684