1857240 - Intermittent dom/base/test/fullscreen/mochitest.ini failures on new Ubuntu 22.04 Wayland pool

Status: NEW

(Core :: DOM: Core & HTML, defect)

Description

[Andrew Halberstadt [:ahal]]

This is happening on a new Ubuntu 22.04 Wayland enabled pool we're in the process of standing up.

Example failure log:
https://treeherder.mozilla.org/logviewer?job_id=431356038&repo=try&lineNumber=3077

Two tests seem to fail here with similar messages:

• test_fullscreen-api.html
• test_fullscreen_modal.html

[task 2023-10-04T20:49:48.947Z] 20:49:48     INFO - TEST-PASS | dom/base/test/fullscreen/test_fullscreen-api.html | [denied] Should not grant request in non-trust context. 
[task 2023-10-04T20:49:48.948Z] 20:49:48     INFO - Buffered messages finished
[task 2023-10-04T20:49:48.949Z] 20:49:48     INFO - TEST-UNEXPECTED-FAIL | dom/base/test/fullscreen/test_fullscreen-api.html | [denied] Should never receive a fullscreenchange event in the main window. 
[task 2023-10-04T20:49:48.949Z] 20:49:48     INFO -     SimpleTest.ok@SimpleTest/SimpleTest.js:426:16
[task 2023-10-04T20:49:48.949Z] 20:49:48     INFO -     ok@dom/base/test/fullscreen/file_fullscreen-denied.html:27:10
[task 2023-10-04T20:49:48.950Z] 20:49:48     INFO -     begin/<@dom/base/test/fullscreen/file_fullscreen-denied.html:46:7
[task 2023-10-04T20:49:48.950Z] 20:49:48     INFO -     EventListener.handleEvent*begin@dom/base/test/fullscreen/file_fullscreen-denied.html:45:12
[task 2023-10-04T20:49:48.950Z] 20:49:48     INFO -     runNextTest/</</<@dom/base/test/fullscreen/test_fullscreen-api.html:119:22
[task 2023-10-04T20:49:48.950Z] 20:49:48     INFO -     SimpleTest.waitForFocus/<@SimpleTest/SimpleTest.js:1058:13
[task 2023-10-04T20:54:35.229Z] 20:54:35     INFO - Not taking screenshot here: see the one that was previously logged
[task 2023-10-04T20:54:35.231Z] 20:54:35     INFO - TEST-UNEXPECTED-FAIL | dom/base/test/fullscreen/test_fullscreen-api.html | Test timed out. - 
[task 2023-10-04T20:54:36.244Z] 20:54:36     INFO - GECKO(4196) | MEMORY STAT | vsize 2402MB | residentFast 97MB | heapAllocated 7MB
[task 2023-10-04T20:54:40.274Z] 20:54:40     INFO - Error: Unable to restore focus, expect failures and timeouts.

It's unclear whether this is a result of Wayland, upgrading to Ubuntu 22.04 or hardware characteristics of the new workers. The tests will be skipped on this new platform.