1195850 - Using e10s gamepad api, only one gamepad is found when multiple connected

Status: RESOLVED WORKSFORME

(Core :: DOM: Device Interfaces, defect)

Description

[Kyle Machulis [:qdot] [:kmachulis] (INACTIVE)]

According to https://bugzilla.mozilla.org/show_bug.cgi?id=852944#c63, Under e10s, if more than one gamepad is connected, only one shows up. Reported on OS X, but should check across all platforms.

Comment 1

[Jim Mathies [:jimm]]

Hey Kyle, is this considered an e10s blocker, and if so, do you think you'll have time for it? :)

Comment 2

[Kyle Machulis [:qdot] [:kmachulis] (INACTIVE)]

Ok, did some quick tests. 

Windows:
- Used 3 controllers (xbox 360 wired, xbox 360 wireless, generic dragonrise chipset), all identified and worked fine simultaneously

Linux:
- Used 2 controllers (xbox 360 wired, generic dragonrise chipset), all identified and worked fine simultaniously

OS X:
- Used 2 controllers (PS3 Wired, generic dragonrise chipset). With both plugged in, only first one identified and worked. If I unplug/replug second one, it identifies, but there's no input from it. Sometimes it identified twice. 

So, this looks like something that is /only/ a problem with OS X, and is probably somewhere in the OS X joystick core. I can probably take a look at that sometime in the next week or so. 

That said, I don't think this is an e10s blocker. I'd like to land to aurora if I can 'cause I think it'll be a pretty small fix, but I'm not going to block anything because of it.

Comment 3

[Michael Leu[:Lenzak](UTC+8)]

I think this bug has been fixed in bug1237896
https://bugzilla.mozilla.org/show_bug.cgi?id=1237896

Comment 4

[Cosmin Muntean [:cmuntean], Ecosystem QA]

Firefox: 47.0a2, Build ID, 20160317004016
User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:48.0) Gecko/20100101

Hi,

I have tested this issue on the latest Nightly (48.0a1 - Build ID: 20160317030235) build and latest Aurora (47.0a2) with e10s enabled using an XBOX 360 controller and a Logitech F310. For testing this I have used this sites: 
http://luser.github.io/gamepadtest/; 
http://people.mozilla.com/~tmielczarek/combat/; 
http://html5gamepad.com/ 

This are the results:
On Windows 7 x64, both controllers were identified and worked simultaneously.
On Ubuntu 14.04 x64, both controllers were identified and worked simultaneously.
On Mac OS 10.09, both controllers were identified and worked simultaneously.
on Mac OS 10.11, both controllers were identified and worked simultaneously.

Thanks,
Cosmin.