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Issue metadata

Status: Unconfirmed
Owner: ----
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Mac
Pri: 2
Type: Bug-Regression



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No cursor shown on Viewer when Application shared from Chrome on macOS 10.14 using external monitor

Reported by abhina...@gmail.com, Oct 10

Issue description

UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.92 Safari/537.36

Steps to reproduce the problem:
Pre-requisite: Connect MacBook with external monitor.

1. Join bit.ly/Bb-Session as user, say A.
2. From another system, join bit.ly/Bb-Session as another user (as a viewer), say V.
2. On A, Go to the bottom right, Collaborate Panel > Share Content > Share Application > Just An Application. This will show Add to Chrome button, install Desktop Sharing extension (URL: https://chrome.google.com/webstore/detail/desktop-sharing/ajojghojfapedgfkjmhchgblmjfanggo)
3. Once extension is installed, Reload the session.
4. Open Collaborate Panel > Share Content > Share Application > Just An Application. Choose an Application which is on external monitor.
5. Move cursor around the shared application.
6. View shared application on user V.

What is the expected behavior?
User V sees cursor, both when it's stationary and when it's moving.

What went wrong?
User V doesn't see cursor, ever.

Did this work before? Yes macOS 10.13 with Chrome 68 Stable

Chrome version: 69.0.3497.92  Channel: stable
OS Version: OS X 10.14.0
Flash Version: 

This seems to primarily be a problem when running with the discrete graphics chipsets. So far can be reproduced when running a 2nd monitor.
 
Components: -UI Internals>WebRTC
Labels: Needs-Triage-M69 Needs-Bisect
Cc: vamshi.kommuri@chromium.org
Labels: Triaged-ET Needs-Feedback
Thanks for filing the issue!

Tried checking the issue on reported chrome version 69.0.3497.92 using Mac 10.13.1 with the below mentioned steps.
1. Connected a dual monitor
2. Launched Chrome
3. Joined bit.ly/Bb-Session as a user A
4. In another system joined the session as Viewer V
5. On A navigated to Collaborate Panel > Share Content > Share Application > Just An Application.
6. Added the Desktop Sharing extension -> Reloaded the session
7. Tried sharing an application(Maps in our case) which is present on external monitor.
8. Observed shared application on user V.
We/(User V) were/(was) able to see the cursor when it is stationery and when it is moving.

@Reporter: Could you please try the same in a new profile and let us know if the issue still persists. And it would be helpful is mentioned whether this is specific to OS 10.14. Any further inputs from your end may be helpful. 
Based mine and Abhi's testing thus far, it is specific to OS 10.14 with an external monitor, and sharing a specific application, and our users have consistently reported it.
#4: What is the specific application?
@ellyjo - We meant sharing an application instead of the "Entire screen".

i.e. Collaborate Panel > Share Content > Share Application > Just An Application
instead of Collaborate Panel > Share Content > Share Application > Entire Screen.
Project Member

Comment 7 by sheriffbot@chromium.org, Nov 20

Labels: -Needs-Feedback
Thank you for providing more feedback. Adding the requester to the cc list.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot
Labels: -Needs-Bisect
Tried checking the issue on reported chrome version 69.0.3497.92 using Mac 10.14.0 by connecting to an external display(....Dual monitor) with the exact steps mentioned in Comment#3(C#0) by selecting the option "Just An Application" for sharing, rather than selecting "Entire Screen". Yet we couldn't reproduce the issue from our end. Hence removing Needs-Bisect label and requesting someone from "Internals>WebRTC" team to have a look into the issue for further inputs.

Thanks!
CC'ing emrican@ and guidou@, who might be familiar with what this issue could be regarding the screenshare extension API.
Cc: emir...@chromium.org guidou@chromium.org

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