Px4-autopilot: ERROR: ld.so: object 'libgtk3-nocsd.so.0' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.

[rahulsharma11]

Hi, I have just upgrade to Ubuntu18. From then whenever i build the px4 firmware i got the error-
ERROR: ld.so: object 'libgtk3-nocsd.so.0' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
Is this really due to Ubuntu Upgradation? How can i solve it?
Thanks

[dagar]

Yes this is likely Ubuntu updated related.

What are you running exactly? PX4 itself shouldn't be using gtk3, is that from gazebo?

[rahulsharma11]

Hi, Its not from gazebo. I am building px4fmu-v2_default.

[dagar]

Exactly when do you see the error? Screenshot?

[rahulsharma11]

After running make px4fmu-v2_default,

[dagar]

Weird. Did you do a fresh install of Ubuntu 18.04 or an upgrade from an older release?

[rahulsharma11]

I upgraded from previous 17.10

[rahulsharma11]

Hi,
Any suggestion?

[benVolatiles]

I get the same error after updating to Ubuntu 18.04 when building our firmware (completely unrelated to PX4) too, so I'd say this is a bug in Ubuntu.

The firmware build is completely unaffected by this nuisance.

[rahulsharma11]

Ok. Thanks for the confirmation.

[imambungo]

I solved the same issue by adding the following line in .bashrc file in my home folder:

export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libgtk3-nocsd.so.0

Make sure you have libgtk3-nocsd.so.0 in /usr/lib/x86_64-linux-gnu/
If you didn't have it, try sudo apt-get install gtk3-nocsd

[worstprogrammerCN]

I solved the same issue by adding the following line in .bashrc file in my home folder:

export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libgtk3-nocsd.so.0

Make sure you have libgtk3-nocsd.so.0 in /usr/lib/x86_64-linux-gnu/
If you didn't have it, try sudo apt-get install gtk3-nocsd

That works for me. Besides, you can run find /usr -name libgtk3-nocsd.so.0 -print to find it.

[imambungo]

Happy to help :blush:

[neokos90]

I had the same problem and this solve helped me too. Thanks!

[wizardion]

It is helped with me too! Thanks!

[SPlatten]

I was running Ubuntu 16.04 in a virtual machine on iMAC, I stupidly updated to 18.04 and now I'm getting these issues, unfortunately none of the fixes I've found so far have helped and I don't have the folder /usr/lib/x86_64-linux-gnu, could this be because I'm on an iMAC ?

[Bost]

See also https://github.com/lutris/lutris/issues/905#issuecomment-514185518