Trying to run josm gives the following error: $ Locking assertion failure. Backtrace: #0 /usr/lib/libxcb-xlib.so.0 [0x7fd83ddf4a8c] #1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_unlock+0x24) [0x7fd83ddf4b34] #2 /usr/lib/libX11.so.6(_XReply+0x258) [0x7fd83e248918] #3 /opt/sun-jdk-1.5.0.16/jre/lib/amd64/xawt/libmawt.so [0x7fd83e779d7b] #4 /opt/sun-jdk-1.5.0.16/jre/lib/amd64/xawt/libmawt.so [0x7fd83e766e9c] #5 /opt/sun-jdk-1.5.0.16/jre/lib/amd64/xawt/libmawt.so [0x7fd83e766ffe] #6 /opt/sun-jdk-1.5.0.16/jre/lib/amd64/xawt/libmawt.so(Java_sun_awt_X11GraphicsEnvironment_initDisplay+0x9) [0x7fd83e7671c9] #7 [0x7fd849ab6f3a] java: xcb_xlib.c:82: xcb_xlib_unlock: Assertion `c->xlib.lock' failed. /usr/bin/josm: line 9: 6713 Abgebrochen java -jar /usr/share/josm/lib/josm.jar LIBXCB_ALLOW_SLOPPY_LOCK=true josm, like suggested on https://help.ubuntu.com/community/JOSM works, though. Reproducible: Always Steps to Reproduce:
Please use a recent Java 1.6 to avoid this error. *** This bug has been marked as a duplicate of bug 156353 ***