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(187/211) 4004 - ClassCastException: BufImgSurfaceData cannot be cast to XRSurfaceData after long idle period

I had jEdit running and idle for a long time. I don't know how to reproduce this yet.

When I tried to use it again, I saw this exception in the activity log.
Using jEdit 5.3.1 (svn trunk) from today.
jEdit stops painting dockables after that, and I am unable to do lots of things (but it is still running).

on Linux / KDE plasma5 / Kubuntu.

Submitted	ezust - 2016-07-15 00:51:47.662000	Assigned	ezust
Priority	5	Labels
Status	open	Group	normal bug
Resolution	wont-fix

Comments

2016-10-13 13:48:27.259000 ezust	Some more info: It might be related to the way the screensaver or the power-saving features are interacting with the JDK, but it is a JDK bug that is linux-specific and not something that can be fixed in jEdit. http://bugs.java.com/bugdatabase/view_bug.do?bug_id=7172749 https://bugs.openjdk.java.net/browse/JDK-7172749
2016-10-13 13:51:11.114000 ezust	- status: open --> open-wont-fix
2018-01-04 11:32:15.744000 whitingjr	Hi, Looking at the bug report the issue is for a different defect. The call stacks differ. The exception for you is thrown in .cacheToTmpSurface method. The jdk bug report is for the method .validateSurface I am seeing the same issue as you. I'll try and get the jdk issue fixed as a separate bug report.