MATLAB: xcb_xlib.c:50: xcb_xlib_unlock: Assertion `c->xlib.lock' failed.
 

I have done a successful installation of Matlab. But, when I try to run it, I get this error. What is this and how to correct this? I want to run Matlab desperately.

I have found the solution for Fedora 8 only! We gotta install some of the older packages of Fedora on Fedora 8. I am writing this so that it may help others.

You have to install three rpm's in order to achieve this. Just download the following rpm's:

1. libX11-1.0.3-8.fc7.src.rpm
2. libX11-1.0.3-8.fc7.i386.rpm
3. libX11-devel-1.0.3-8.fc7.i386.rpm

Now, you have to replace the Fedora 8 packages by Fedora 7 ones. For that, you need to put in the following command:

That's it, you are done! You can run Matlab or any other software that gets this kind of error :)

On Fedora 9, one has to install 'LibXP.so', and the rest of them run without any problems.