The screensaver should not be inhibited by "cpu" and "high-priority" wake locks. It looks like those are used to inhibit GC or disable power save (see Bug 872430).
I've found two screen related wake locks - "DOM_Fullscreen" (Bug 805017) and "screen" (Bug 868325). I think any element which wants to inhibit screensaver should create the "screen" or "DOM_Fullscreen" wake locks - like the VideoElement does. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/434476 Title: screensaver starts while playing HTML5 videos Status in The Mozilla Firefox Browser: Confirmed Status in “firefox” package in Ubuntu: Confirmed Status in “firefox-3.5” package in Ubuntu: Triaged Bug description: Binary package hint: firefox-3.5 karmic alpha6 + updates - click on a .ogv video link - after watching some time, screensaver starts. ProblemType: Bug Architecture: amd64 Date: Tue Sep 22 08:45:53 2009 DistroRelease: Ubuntu 9.10 NonfreeKernelModules: nvidia Package: firefox 3.5.3+build1+nobinonly-0ubuntu2 PackageArchitecture: all ProcEnviron: LANG=de_AT.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 2.6.31-10.34-generic SourcePackage: firefox-3.5 Uname: Linux 2.6.31-10-generic x86_64 To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/434476/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp