I'm not sure how you'll reproduce this. But it burned my screens over night which is really hard on my hardware. I came in this morning to work to find both displays fully on. I have the screen saver disabled because I prefer to shut off the displays after five minutes of inactivity. For some reason, powerdevil isn't turning off the displays. It may be related to videos disabling screen savers and then crashing. I've seen that before, however I can't be sure about anything. How can I get you more data? What can I check out and report back? Help me, help you.
> It may be related to videos disabling screen savers and then crashing. That is very likely. What kinds of videos are we talking about?
Youtube videos embedded in web pages, probably. I get the sense that some of the embedded html5 players and gif players might disable screen saver as well. I've left them playing because circumstance and come back to find the screen not locked. Then when i close the tab, everything goes back to normal. I've actually thought about how to correct something like this, but it's tough because you can't tell if the video crashed before being able to re-enable the screen saver. I guess if you have a timeout, say two hours or something you'll just annoy the user if he's really watching a video for that long. Clearly the screen saver enable code should be in a finally: statement, heh.
> I've left them playing because circumstance and come back to find the screen not locked. Hmm, I'm not sure how we could resolve this, because it's deliberate that playing videos inhibits sleep. When this happened, was a video or audio still playing, or had it crashed? If the latter then there may be something we can do, but if the former, I don't think there's any way the system can read your mind and know that you want the computer to go to sleep in the middle of a playing video. :)
I don't think there was any video open in any tabs. I didn't get any crash notifications. So I can't really be sure about anything. Is there a way I can check powerdevil to see if it's alive and well? Is there a way to turn it back on?
I thought you said there was a video playing. So was there anything you know of that would have disabled power management?
There was no video at the time the screen failed to turn off. But I had played videos earlier on reddit and it's possible they crashed for reasons. Like I said earlier, this is not easy to debug because I have little idea how it got into that state. That's why I was hoping there was a way to check it's state through GUI or CLI.
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I have not had the problem recently. What ever happened, has cleared itself up probably with an emerge world. Feel free to close this ticket. If it happens again, I'll open it back up.
Thanks!