Full screen video playback is not detected by xfce screensaver. #1853

When a video is played in fullscreen mode, it is not detected by xfce screensaver and the screensaver kicks after the set delay. Audio still plays, but video is not shown. It seems that Pale Moon is unable to send inhibit signal. Other browsers work correctly, especially firefox does this correctly.

I reported this issue to my distribution, MX Linux. They suggested me to report this here given that firefox is handling this correctly in MX without any issue. This issue just affects Pale Moon.

When a video is played in fullscreen mode, it is not detected by xfce screensaver and the screensaver kicks after the set delay. Audio still plays, but video is not shown. It seems that Pale Moon is unable to send inhibit signal. Other browsers work correctly, especially firefox does this correctly. I reported this issue to my distribution, MX Linux. They suggested me to report this here given that firefox is handling this correctly in MX without any issue. This issue just affects Pale Moon.

I did some testing and it seems to depend on lockscreen/screensaver used mate-screensaver on mate session does not lock, mate-screensaver on lxde session does not, xscreensaver locks on both. So I would try contacting XFCE guys first @abhidesh128

Man, I hate Linux sometimes XD

One more thing to tell is Firefox can't inhibit screensaver in fullscreen video on its own. Xfce screensaver has an option to inhibit screensaver in fullscreen mode. After enabling that, Firefox inhibits the screensaver. I think the same behavior is expected in case of Pale Moon. Because, at the core, they are nearly same. Firefox have had the same bug, but it seems to be solved at some time. It now sends inhibit signal after enabling that option. This is somehow not achieved in Pale moon, I think.

Ok, but mate-screensaver can somehow detect both Firefox and Pale Moon being fullscreen. It has no setting to "inhibit screensaver in fullscreen mode"

Ok, but mate-screensaver can somehow detect both Firefox and Pale Moon being fullscreen. It has no setting to "inhibit screensaver in fullscreen mode" ![image](/attachments/593e4641-8f88-48c0-9ab0-48f59f05c0e0)

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Ohh..! So it's not that simple. Anyway, is it linked to my distribution, MX Linux ? I don't know about others, perhaps my distribution itself has some trouble with Pale Moon. Though when I reported this bug to MX bugzilla they told that as FF is working correctly, there's no issue on MX's side. But, now it seems that there may be an issue with MX itself.

Doex MX Linux have mate desktop in repositories? Best you could do is to test with mate-screensaver. It works correctly for me.

Ya, MX has mate in repository. I will give it a try and report here.

@micwoj92 also for me, everything works correctly with mate screensaver. Something is odd in xfce.

So, unlikely to be a problem on our end then?

Yeah. It's not Pale Moon's problem, probably xfce has some issue

Okay! Thanks for investigating.
Closing this issue.

Okay! Thanks for investigating. Closing this issue.

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Full screen video playback is not detected by xfce screensaver. #1853