Closed Bug 1353851 Opened 3 years ago Closed 3 years ago

Linux netflix playback is broken in Firefox 55 (Netflix Error Code: F7701-1003)


(Core :: Audio/Video: Playback, defect)

55 Branch
Not set





(Reporter: etcode, Unassigned)


(Keywords: regressionwindow-wanted)

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:55.0) Gecko/20100101 Firefox/55.0
Build ID: 20170404100210

Steps to reproduce:

Linux netflix playback is broken entirely in FIrefox 55 (Netflix Error Code: F7701-1003). 
Note: this issue might be related to . However, unlike on what is described there playback for me never works, not even for a few seconds. (It works perfectly in Firefox 54) Therefore, this seems to be something different than just a background suspend issue when the tab becomes inactive.

Steps to reproduce: 1. Login to netflix, 2. Start watching any video

Actual results:

Instant error in FIrefox 55, works fine in FIrefox 54

Expected results:

Works fine in Firefox 55
For what it's worth, I also just tried setting media.suspend-bkgnd-video.enabled to false and it changes nothing - still broken in Firefox 55 on Linux.
Component: Untriaged → Audio/Video: Playback
OS: Unspecified → Linux
Product: Firefox → Core
Hardware: Unspecified → x86_64
Summary: Linux netflix playback is broken in FIrefox 55 (Netflix Error Code: F7701-1003) → Linux netflix playback is broken in Firefox 55 (Netflix Error Code: F7701-1003)
Did you test with a fresh profile?

If it's still broken, could you run the tool mozregression to narrow down a regression range in FF55, please.
See for details.
Run the command "mozregression --good=53"(54 is not "registered"), for each build launched, make the test and enter if it's good or bad, then, at the end, paste the final pushlog from mozilla-inbound.
Flags: needinfo?(jonas)
Interestingly, I just upgraded my laptop from 54 to 55 and there it still works. It only broke on my desktop after the 54 -> 55 upgrade.. I'll investigate further.
Ok I dug further and the problem is that with the latest update the setting media.eme.enabled reverted to "false". Firefox 55 also shows this as a default setting on my desktop PC, meaning that if this isn't just that way on my PC anyone who would want to use it would need to dig into about:config first. Is this intentional?

Anyway, changing that setting to "true" makes it work again.
Flags: needinfo?(jonas)
Closed: 3 years ago
Resolution: --- → WORKSFORME
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