2055133 - navigator.mediaDevices.getDisplayMedia returns NotFoundError: The object can not be found here

Status: UNCONFIRMED

(Core :: WebRTC: Audio/Video, defect)

Description

[Ivan Enderlin]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:154.0) Gecko/20100101 Firefox/154.0

Steps to reproduce:

1. Open https://mozilla.github.io/webrtc-landing/gum_test.html
2. Click on the Screen capture button
3. Firefox prompts Allow mozilla.github.io to see your screen?
4. Keep the default items in the drop menu: Use operation system settings (whatever I select, the output is the same)
5. Click the Allow button

Notes: it's been years it's broken, and I'm waiting for a fix, so here I am. Same with other websites, like call.element.io, device-test.com/screen and so on.

Actual results:

See the error being displayed in red in the middle of the page:

NotFoundError: The object can not be found here.

Expected results:

See my screen being shared.

Comment 1

[BugBot [:suhaib / :marco]]

The Bugbug bot thinks this bug should belong to the 'Core::WebRTC: Audio/Video' component, but is not confident enough to move the bug to that component.

Comment 2

[BugBot [:suhaib / :marco]]

The severity field is not set for this bug.
:jib, could you have a look please?

For more information, please visit BugBot documentation.

Comment 3

[Jim Mathies [:jimm]]

Could you help us out by trying to capture a Firefox performance profile when this happens? Visit https://profiler.firefox.com/ for more information and to enable the profiling toolbar button. When capturing a profile, please follow these steps -

1. Navigate to about:logging
2. In the logging preset drop down, select 'WebRTC' and then click 'Set Log Modules'
3. Click 'Start Logging' and conduct your testing. Keep this part short. Capture the issue well.
4. Upload the resulting performance profile and post the url provided to this bug.

Thanks!

Comment 4

[Ivan Enderlin]

Here is the profile I've captured, https://share.firefox.dev/4qcxsnI. I hope it is useful.

Comment 5

[Jim Mathies [:jimm]]

(wrong report)

Comment 6

[Ivan Enderlin]

Jim, this essay seems to be generated by an LLM, and has apparently hallucinated everything. I'm not talking about Twitch at all. The comment 2 you're referring to doesn't contain the mentioned quote. Either this is about a different bug, or the random text generator has high hallucination. I'm reopening the bug…

Comment 7

[Ivan Enderlin]

Maybe the comment was for https://bugzilla.mozilla.org/show_bug.cgi?id=2048436, but it doesn't smell good any better.

Comment 8

[Jim Mathies [:jimm]]

(In reply to Ivan Enderlin from comment #6)

Jim, this essay seems to be generated by an LLM, and has apparently hallucinated everything. I'm not talking about Twitch at all. The comment 2 you're referring to doesn't contain the mentioned quote. Either this is about a different bug, or the random text generator has high hallucination. I'm reopening the bug…

Sorry, had my bugs mixed up. That was the wrong triage report. Will generate another.

Comment 9

[BugBot [:suhaib / :marco]]

The severity field is not set for this bug.
:jib, could you have a look please?

For more information, please visit BugBot documentation.