1845666 - Block ability to disable utility audio decoder on nightly

Status: RESOLVED FIXED

(Core :: Audio/Video, enhancement)

Description

[:gerard-majax]

As of bug 1835804 we have blocked the ability to perform audio decoding on tab (unless a pref was toggled). So far the result is:

• we got bug reports of breakage of audio decoding on Snap (bug 1839852) and NixOS (bug 1840371) package, due to sandboxing limitation (fixed)
• we finally identified misreporting of tab audio decoding due to EMEDecryptor (bug 1844281)
• telemetry dashboard has been fixed to properly report all toggled prefs and we are more than one week into all the previous fixes, and we have no more tab outside of a few people on linux disabling RDD and Utility processes (and allowing tab).

We should probably start looking into blocking more so that we can either confirm those users have proper audio decoding working on Utility OR we can get bug reports to fix what is broken.

Probably the safe course of action is locking the pref media.utility-process.enabled so we make sure the utility process can be used if it's working, but people can still force media.audio-allow-non-utility ?

Comment 1

[:gerard-majax]

Attachment: Bug 1845666 - Lock the media.utility-* prefs r?alwu!

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/b31464975bb4
Lock the media.utility-* prefs r=alwu

Comment 3

[Cosmin Sabou [:CosminS]]

Backed out for causing media.utility related bc failures.

Push with failures: https://treeherder.mozilla.org/jobs?repo=autoland&resultStatus=testfailed%2Cbusted%2Cexception%2Cretry%2Cusercancel&revision=b31464975bb47ae4e77397f563a686b9ad30ca00&selectedTaskRun=XESRSW_DT1mWVzV7Ueylsw.0

Failure log: https://treeherder.mozilla.org/logviewer?job_id=427550561&repo=autoland

Backout link: https://hg.mozilla.org/integration/autoland/rev/33d1c42b026e21617602c6006491a09d2380fce2

Comment 4

[:gerard-majax]

always happy when preparing a patch a few weeks in advance and it gets backed out like that :(

Comment 5

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/a826fe2a1e67
Lock the media.utility-* prefs r=alwu

Comment 6

[Cosmin Sabou [:CosminS]]

https://hg.mozilla.org/mozilla-central/rev/a826fe2a1e67