1892595 - Wake Lock API doesn't let XScreenSaver suspend screen blanking when viewing fullscreen video on systems with DBUS

Status: NEW

(Core :: Widget: Gtk, defect, P3)

Description

[Mike Lieman]

Attachment: firefox-log.txt-main.4668.moz_log

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:125.0) Gecko/20100101 Firefox/125.0

Steps to reproduce:

Start video playback; switch to fullscreen.

Actual results:

Screen blanked after 10 minutes. Playback (audio) continued.

Expected results:

Screen blanking should have been disabled.

Comment 1

[Mike Lieman]

The attached file shows that the suspend is being sent to DBUS, which would be fine, but my desktop is XMonad on top of an xserver, which means I need XScreenSaver's API instead of DBUS's.

mozilla-unified/widget/gtk/WakeLockListener.cpp iterates through the enumerated values, and DBUS comes before XScreenSaver. In a system with both, DBUS will be picked first.

I have ideas on how it can be resolved, but I won't have time to compile/test until late next week.

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::Audio/Video: Playback' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 3

[Mike Lieman]

1) I'm working on this bug, can someone with bug-editing privileges assign it to me?

2) Martin, what additional information do you require?

Comment 4

[Martin Stránský [:stransky] (ni? me)]

(In reply to Mike Lieman from comment #3)

1. I'm working on this bug, can someone with bug-editing privileges assign it to me?

Moved.

2. Martin, what additional information do you require?

I don't need any other info here, thanks.

Comment 5

[BugBot (nomail) [:suhaib / :marco/ :calixte]]

The bug assignee is inactive on Bugzilla, so the assignee is being reset.