1102871 - Using two screen setup, getUserMedia application test will recognize and will use the secondary screen only if it`s set up to be on the right side of primary screen.

Status: RESOLVED WORKSFORME

(Core :: WebRTC: Audio/Video, defect, P3)

Description

[Bogdan Maris, Desktop QA]

Attachment: Screenshot showing the issue

STR:
1. Using a two screen setup, make the primary screen the one from right side - secondary screen on left side
2. Start Firefox.
3. Navigate to about:config, search for 'media.getusermedia.screensharing.allowed_domains' and add 'people.mozilla.org' at the end.
4. Restart Firefox.
5. Navigate to https://people.mozilla.org/~fqueze2/webrtc/ff_gum_test.html
6. Click on Application button and share any given app.

Expected results: Screens are properly displayed in Firefox output screen.

Actual results: Screens are reversed in output screen, and the content of the app can`t be seen.

Notes:
1. This issue can be reproduced only in Windows using Firefox 34 beta 11 and latest Nightly.
2. Screenshot showing the issue attached.
(TaskManager is the shared app, but it shown the area from same position in secondary screen)

Comment 1

[Florian Quèze [:florian]]

It looks like this is causing us to share content that the user neither intended nor granted permission to share. Adding a needinfo to ensure you've actually seen this bug.

Comment 2

[Randell Jesup [:jesup] (needinfo me)]

Yup.  Hadn't noticed it; this appears to be sharing the correct area off the wrong screen.  

Matt - are you available to fix this?  I suspect it's just an "add offset for correct screen" bug.  Otherwise jib, pkerr or I could take it.

Comment 3

[Maire Reavy [:mreavy]]

I believe Matt is working on other projects.

Randell-- Can you take this (at least for the initial investigation)?   I'd like to know if this is an easy fix that we can uplift or if it's messier/more complicated).  Since this has privacy implications, I'd love to have a fix by next week that hopefully we can uplift.

Comment 4

[Maire Reavy [:mreavy]]

Moving to pkerr.  Let's try to get multi-montior support in screensharing done in Q3.

Comment 5

[Bulk Bug Changes for mreavy's org]

Mass change P2->P3 to align with new Mozilla triage process.

Comment 6

[BugBot [:suhaib / :marco/ :calixte]]

The bug assignee didn't login in Bugzilla in the last 7 months.
:jib, could you have a look please?
For more information, please visit auto_nag documentation.

Comment 7

[Bogdan Maris, Desktop QA]

Closing since this is not reproducible anymore using latest Firefox 123.0 build.