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Installing Lazarus 1.8.4 on Ubuntu 18.04

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Problem solved, now my Lazarus 1.8.4 seems to work correctly.

Not sure which one was the 'real' solution, but I have done these:

Because IGL is a library related with OpenGL, I use Synaptic Package Manager to reinstall items that related with OpenGL. I use Synaptic to find items with keyword "libGL". Then right-clicked on them and selected "Mark for reinstallation". (This is what I like about Synaptic, you can reinstall items without need the dependent libs/programs to be removed. AFAIK, I can't do it using Terminal).

Also, on the Lazarus IDE, I marked the OpenGL related packages to uninstall. FYI, I previously had LazOpenGL Context, BGRABitmap, Castle Game Engine installed on Lazarus 1.8.2.

After I done those 2 things above, I rebuilt my Lazarus 1.8.4. Everything went smoothly. And later I reinstalled back LazOpenGL Context, BGRABitmap, Castle Game Engine packages.

So far my Lazarus 1.8.4 now works without any issue.

I think it is not "IGL" but "lGL" (lowercase L). So  sudo apt-get install lGL
should do the trick, and the only "i" is in "install".

Oh my fault, if I mentioned IGL. It should be lGL.

I got "Unable to locate package lGL" if I type sudo apt-get install lGL on my Ubuntu 18.04 Terminal.

Sorry that should be  ... install libGL

libGL was already installed. Thank you for the suggestion, now my Lazarus is working correctly.


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