1496415 - USB devices sometimes not showing up on WebIDE

Status: RESOLVED DUPLICATE of bug 1493104

(DevTools :: about:debugging, defect, P2)

Description

[Belén [:ladybenko]]

Attachment: Screen Shot 2018-10-04 at 15.04.59.png

With a USB device plugged in, sometimes it shows up on the sidebar in about:debugging, but not in WebIDE, and clicking the refresh button there doesn't help. After a few times of opening/closing WebIDE the USB device does appear. I don't see anything relevant in the Browser Console :(

Comment 1

[Julian Descottes [:jdescottes]]

I haven't really reproduced this bug yet, but sometimes adb.js fails to find the ADB files even though the addon is installed. You didn't happen to have

JavaScript error: resource://devtools/shared/base-loader.js -> resource://devtools/shared/adb/adb.js, line 104: NS_ERROR_ILLEGAL_VALUE: Component returned failure code: 0x80070057 (NS_ERROR_ILLEGAL_VALUE) [nsIProcess.init]

in your logs?

Comment 2

[Julian Descottes [:jdescottes]]

This is actually the "mirror" issue from Bug 1496108:
- in Bug 1496108, aboutdebugging expects that the ADB Addon status is correct when calling getAvailableAddons()
- in this bug, webide expects that ADB Addon will fire an "update" addon to notify that is it installed

Comment 3

[Julian Descottes [:jdescottes]]

One thing to mention is that these tricky interactions between WebIDE and aboutdebugging occur because all the webide modules are loaded in the same sandbox. So if aboutdebugging requires "devtools/client/webide/modules/addons" first, when WebIDE requires the module, it will get the same instance.

Comment 4

[Julian Descottes [:jdescottes]]

Unassigning myself while I work on blocking bug 1493104 (I suspect I will end up closing this as duplicate after that).