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FS#54450 - [chromium] 59 breaks Slack calls

Attached to Project: Arch Linux
Opened by Jan Alexander Steffens (heftig) - Wednesday, 14 June 2017, 09:06 GMT
Last edited by Evangelos Foutras (foutrelis) - Wednesday, 18 October 2017, 07:08 GMT
Task Type Bug Report
Category Packages: Extra
Status Closed
Assigned To Evangelos Foutras (foutrelis)
Architecture x86_64
Severity Medium
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 1
Private No


Attempt to start an audio call at
No actual peers are necessary; not even calls to empty channels work.

With chromium 58.0.3029.110-1 it works,
with chromium 59.0.3071.86-1 it's broken and reports that the connection to the server could not be established.

Slack uses Janus as its WebRTC framework and the Janus Echo demo at is also broken since 59.
It reports a "DevicesNotFoundError" without any further details.

Steps to reproduce:
1. Visit
2. Click the "Start" button next to the page heading.
This task depends upon

Closed by  Evangelos Foutras (foutrelis)
Wednesday, 18 October 2017, 07:08 GMT
Reason for closing:  Fixed
Additional comments about closing:  According to the upstream bug, web cameras that report invalid FPS should now work again in Chromium 62.
Comment by Evangelos Foutras (foutrelis) - Friday, 16 June 2017, 20:02 GMT
Did you figure it out? (Seems to work OK for me.)
Comment by Jan Alexander Steffens (heftig) - Friday, 16 June 2017, 21:41 GMT
Do you have a camera? Seems it's only broken if video input is available.
Comment by Jan Alexander Steffens (heftig) - Friday, 16 June 2017, 21:44 GMT
navigator.mediaDevices.getUserMedia({video: true});

This fails even though navigator.mediaDevices.enumerateDevices() shows I have a videoinput available.
Comment by Jan Alexander Steffens (heftig) - Monday, 19 June 2017, 08:37 GMT
My notebook at home (with a "BisonCam") seems to work fine. My work PC (with an old Logitech QuickCam Messenger) is broken.

v4l2-ctl for the QuickCam:

gst-device-monitor-1.0 for both:
Comment by Jan Alexander Steffens (heftig) - Monday, 19 June 2017, 10:39 GMT
Removed the QuickCam, now calls work again.
Comment by Evangelos Foutras (foutrelis) - Thursday, 20 July 2017, 19:08 GMT Comment by Diego Viola (diegoviola) - Saturday, 22 July 2017, 04:10 GMT
I'm also affected by this bug, my webcam is:

Bus 005 Device 002: ID 0ac8:307b Z-Star Microelectronics Corp. USB 1.1 Webcam
Comment by Diego Viola (diegoviola) - Wednesday, 26 July 2017, 17:27 GMT
Still a problem with chromium 60.0.3112.78-1.