Xlib.lock

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This article refers to the version '10.3' and it is now obsolete! Reason: 10.3. Refer to this article's discussion page for more information.

Version: 10.3

Situation

When running certain JAVA processes (e.g. the IBM Lotus Notes 8 installer, Azureus, Matlab) or beryl, you receive the error: Assertion `c->xlib.lock' failed.

Procedure

The error is caused by a problem in the libxcb package.

Easy way

The easy way is just to install the 10.3 online updates, which turn this into a warning. You should install them anyway to get all the security fixes.

Hard way

As a workaround you can run the following command from the command line and then re-try your operation (from that same command-line)

export LIBXCB_ALLOW_SLOPPY_LOCK=true