Bug 407862 - Permanent VNC connection to Windows Hudson slave down
Summary: Permanent VNC connection to Windows Hudson slave down
Status: CLOSED FIXED
Alias: None
Product: Community
Classification: Eclipse Foundation
Component: CI-Jenkins (show other bugs)
Version: unspecified   Edit
Hardware: PC Windows 10
: P3 major (vote)
Target Milestone: ---   Edit
Assignee: CI Admin Inbox CLA
QA Contact:
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Keywords:
: 407728 (view as bug list)
Depends on: 553456
Blocks:
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Reported: 2013-05-13 06:22 EDT by Markus Keller CLA
Modified: 2019-12-04 04:52 EST (History)
9 users (show)

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Description Markus Keller CLA 2013-05-13 06:22:32 EDT
The permanent VNC connection to the Windows Hudson slave from bug 369873 comment 27 seems to be down since I20130507-1100.

This causes at least a test failure in SWT's test_postLorg_eclipse_swt_widgets_Event:

It also makes screenshots empty:
http://download.eclipse.org/eclipse/downloads/drops4/I20130512-2000/testresults/win32.win32.x86_7.0/org.eclipse.ui.workbench.texteditor.tests.ScreenshotTest.testWindowsTaskManagerScreenshots1.png
Comment 1 Eclipse Webmaster CLA 2013-05-13 09:41:53 EDT
We did some work remotely last week that logged out the Hudson use from the console.  I've logged that user back in on the console so you should be all set.

-M.
Comment 2 Dani Megert CLA 2013-05-14 07:47:39 EDT
Verified in I20130513-2000.
Comment 3 Paul Webster CLA 2013-05-17 11:00:22 EDT
*** Bug 407728 has been marked as a duplicate of this bug. ***
Comment 4 Markus Keller CLA 2013-05-22 06:14:48 EDT
Hudson user is logged out again.
Comment 5 Thanh Ha CLA 2013-05-22 09:25:27 EDT
I just checked and it looks like the Hudson user is logged in and the Hudson agent is reporting connected. Are you still seeing otherwise?
Comment 6 Markus Keller CLA 2013-05-22 10:23:10 EDT
(In reply to comment #5)
See comment 0. This is about the *UI* session that needs to be open.

In I20130520-2000 and I20130521-2000, we had those test failures again.
Comment 7 Thanh Ha CLA 2013-05-22 10:27:54 EDT
(In reply to comment #6)
> (In reply to comment #5)
> See comment 0. This is about the *UI* session that needs to be open.
> 
> In I20130520-2000 and I20130521-2000, we had those test failures again.

I talked to Matt and he showed me what was wrong. I was using RDC to check and not the correct VNC session. The VNC session should be okay again.
Comment 8 Markus Keller CLA 2013-05-23 05:47:27 EDT
Thanks, tests are green again in I20130522-2000.
Comment 9 Niraj Modi CLA 2019-11-28 05:19:29 EST
Reopening, issue with VNC connection since I20191125-1800:
https://download.eclipse.org/eclipse/downloads/drops4/I20191125-1800/testresults/html/org.eclipse.swt.tests_ep414I-unit-win32-java8_win32.win32.x86_64_8.0.html

Note: Windows machine was restarted recently via bug 553456
Comment 10 Niraj Modi CLA 2019-12-03 01:19:17 EST
Hi Mikael/Frederic,
Please have a look at the permanent VNC connection on the Windows test m/c.
We are still seeing a failing JUnit due to this problem:
https://download.eclipse.org/eclipse/downloads/drops4/I20191202-0600/testresults/html/org.eclipse.swt.tests_ep414I-unit-win32-java8_win32.win32.x86_64_8.0.html
Comment 11 Frederic Gurr CLA 2019-12-03 03:26:20 EST
This is not an issue with the "permanent VNC connection" on the Windows test machine. The test machine is connected via JNLP and the tests don't need a VNC connection. If there was an issue with the connectivity to the Windows test machine, all tests would fail, not just one.

The reference to this bug in the test error message needs to be removed or updated.

Since only one of 3891 test cases fails, I'd recommend to check that the test case is still valid.
Comment 12 Niraj Modi CLA 2019-12-03 06:10:26 EST
(In reply to Frederic Gurr from comment #11)
> This is not an issue with the "permanent VNC connection" on the Windows test
> machine. The test machine is connected via JNLP and the tests don't need a
> VNC connection. If there was an issue with the connectivity to the Windows
> test machine, all tests would fail, not just one.
> 
> The reference to this bug in the test error message needs to be removed or
> updated.
> 
> Since only one of 3891 test cases fails, I'd recommend to check that the
> test case is still valid.

Ok, but this particular test-case failure is seen only recently after Windows test machine is re-started via bug 553456.
Am wondering if something else is needed post machine restart ?
Comment 13 Mikaël Barbero CLA 2019-12-03 06:56:58 EST
Nothing special is done after machine restart. But the OS updates are managed by Microsoft, could it be a failure with latest Win10 builds?
Comment 14 Niraj Modi CLA 2019-12-04 04:52:18 EST
(In reply to Mikaël Barbero from comment #13)
> Nothing special is done after machine restart. But the OS updates are
> managed by Microsoft, could it be a failure with latest Win10 builds?

Thanks Mikaël, looks like after Win10 machine re-start OS updates got installed. I am able to replicate the issue my side as well, hence closing this bug.

Raised bug 553754 to track this.