<AWT Dev> RFR: 8253274: The CycleDMImagetest brokes the system

Thu Sep 17 08:46:03 UTC 2020

The test checks all display modes reported by the OS.

Unfortunately on some test systems the switching from the low-resolution modes to the normal mode "takes a while", the
system becomes broken while some other tests start to work.

The fix will limit the resolution of modes tested, it should be bigger than 800x600. Also, the test should try to
properly clean up the system after completion.

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Commit messages:
 - Additional clean up after the test completed
 - Update CycleDMImage.java

Changes: https://git.openjdk.java.net/jdk/pull/222/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=222&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8253274
  Stats: 23 lines in 1 file changed: 7 ins; 9 del; 7 mod
  Patch: https://git.openjdk.java.net/jdk/pull/222.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/222/head:pull/222

PR: https://git.openjdk.java.net/jdk/pull/222