Also reported on bugs.sun.com with bug id 7199196.
Using either Oracle JRE 1.7.0_06-b24 or OpenJDK 1.7.0_07 under Ubuntu 12.04 OS, I cannot paste large amounts of text in java applications. Running the same app with JRE 6 I can paste such texts without any issue. After some debugging I've found that the incremental transfer implemented inside sun.awt.X11.XSelection.getData() method contains one typo that has been introduced by this changeset: http://hg.openjdk.java.net/jdk7u/jdk7u-gate/jdk/rev/6fd2d28e66cd This changeset was required to ensure that isExecuted() is always performed after the isDisposed() call , but one typo slipped in here: the second chunk replaced incrDataGetter.isXXX() calls with validateDataGetter(dataGetter) . But, as dataGetter is already disposed on line 342, the incremental transfer operation will fail with an IOException: Owner failed to convert data. I've attached the proposed patch to this e-mail. Emil Goicovici
XSelection-getData-typo.patch
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