[🐛 Bug]: Sometimes noVNC doesn't work

[Doofus100500]

What happened?

Sometimes noVNC doesn't work, even though "se:vncEnabled": true is present in the capabilities

To reproduce this you can use my test
SeleniumTest.zip

Command used to start Selenium Grid with Docker (or Kubernetes)

helm

Relevant log output

Capabilities:

{
  "acceptInsecureCerts": false,
  "browserName": "firefox",
  "browserVersion": "120.0.1",
  "grid:teamName": "idevops",
  "moz:accessibilityChecks": false,
  "moz:buildID": "20231129155202",
  "moz:geckodriverVersion": "0.33.0",
  "moz:headless": false,
  "moz:platformVersion": "5.4.0-164-generic",
  "moz:processID": 144,
  "moz:profile": "/tmp/rust_mozprofileZOyeGo",
  "moz:shutdownTimeout": 60000,
  "moz:webdriverClick": true,
  "moz:windowless": false,
  "pageLoadStrategy": "normal",
  "platformName": "linux",
  "proxy": {},
  "se:noVncPort": 7900,
  "se:vncEnabled": true,
  "se:vncLocalAddress": "ws://10.223.126.118:7900",
  "setWindowRect": true,
  "strictFileInteractability": false,
  "timeouts": {
    "implicit": 0,
    "pageLoad": 300000,
    "script": 30000
  },
  "unhandledPromptBehavior": "dismiss and notify"
}`

Operating System

k8s

Docker Selenium version (image tag)

4.16.1-20231219

Selenium Grid chart version (chart version)

0.26.4

[github-actions]

@Doofus100500, thank you for creating this issue. We will troubleshoot it as soon as we can.

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[github-actions]

Hi, @Doofus100500.
Please follow the issue template, we need more information to reproduce the issue.

Either a complete code snippet and URL/HTML (if more than one file is needed, provide a GitHub repo and instructions to run the code), the specific versions used, or a more detailed description to help us understand the issue.

Note: If you cannot share your code and URL/HTML, any complete code snippet and URL/HTML that reproduces the issue is good enough.

Reply to this issue when all information is provided, thank you.

[Doofus100500]

Add the test to reproduce this

[VietND96]

Can you take a look any similar to this? #2084

[VietND96]

Via screenshot I understand that you want to point a session without recorder button is visible? It looks like Xvfb not started or crashed in that node

[Doofus100500]

It looks like Xvfb not started or crashed in that node

No, the logs are fine on this and even the video of the session successfully recorded on the s3

[VietND96]

There was a fix for delay in x11vnc (#2119). Can you use nightly build to recheck and confirm?

[VietND96]

In addition, there was a fix for issue where xauth not found, preventing xvfb from starting - a9dc7b7
Please use nightly build to recheck and confirm.
I will mark this as completed. Let's reopen if the intermittent issue occurs again. Thanks!

[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.