I was able to reproduce this issue locally 2 times out of 100 runs on multi-monitor configuration. Both times due to the screen resolution change is so slow window got accidentally moved to the secondary screen by the display driver. Can not reproduce this bug with ATI card at all. Since there is nothing we can do to stop graphics driver from reassigning the window if it decides that promary monitor is not on at the moment the only way is to check if this has had happened and if so then we can not trust the test since we changing resolution of one display and window not getting resized because it is placed on another display and test should be skept.
After that i ran this test locally about a thousand times on all platforms and has not seen the failure again. ------------- Commit messages: - 8169468: NoResizeEventOnDMChangeTest.java fails because FS Window didn't receive all resizes! Changes: https://git.openjdk.java.net/jdk/pull/6186/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=6186&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8169468 Stats: 26 lines in 2 files changed: 20 ins; 2 del; 4 mod Patch: https://git.openjdk.java.net/jdk/pull/6186.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/6186/head:pull/6186 PR: https://git.openjdk.java.net/jdk/pull/6186
