Article ID: 000085138 Content Type: Error Messages Last Reviewed: 10/12/2011

Error: quartus: xcb_xlib.c:82:xcb_xlib_unlock: Assertion ‘c->xlib.lock’ failed.

Environment

    Quartus® II Subscription Edition
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Critical Issue

Description

If your Linux operating system uses the X protocol C-language Binding (XCB) library (libxcb), the Quartus II software might fail to start with an error similar to the following:

quartus: xcb_xlib.c:82:xcb_xlib_unlock: Assertion "c->xlib.lock" failed.

Resolution

Upgrade you Linux distribution to the latest version or, if your Linux distribution uses libxcb version 1.1, run

export LIBXCB_ALLOW_SLOPPY_LOCK=1

before running the Quartus II software version 11.0.

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This article applies to 1 products

Intel® Programmable Devices

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