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On Sunday, September 9, 2018 9:09:52 PM CEST you wrote: > On my laptop, screen usually goes into power saving mode, after a few tens > of seconds. (this laptop never goes to sleep, generally speaking, but I > like the screen to turn itself off nevertheless) > > In contrast, when I have an opened Chromium window, screen often never goes > into power saving mode. > > I haven't found any comments, nowhere, regarding that, on the net. > > I might want to file a bug about that, but since it might be "desktop > dependent", I prefer to ask you if you have observed this situation. > > I can't see anything, but Chromium, at the origin of the screen remaining > turned on forever; occurrences point very consistently in that direction. > > Pages that were opened this time, were: > > Two google search pages; > > Five pages there: https://orgmode.org/worg/ and > there: https://orgmode.org/manual/ > > And that: https://www.cs.tufts.edu/~nr/noweb/ > > So, as it is this time, nothing with aggressive advertising, or auto-playing > videos, or whatever in that line. > > That issue, which I might be alone experiencing, is quite cumbersome, since > it forces me to close Chromium, even though I haven't finished reading what > it is I'm reading; that if I want my screen not to be prevented to go in > power saving mode. > > Thanks, > Chris
I did, as a test, and possible workaround: xset dpms force off
(Arch wiki seems to say that command line is still current; https://wiki.archlinux.org/index.php/Display_Power_Management_Signaling; So I tried.)
After 30 min, the screen was still off, despite the still opened Chromium window.
So in any cases the workaround seems to hold.
Note that in fact, I do not use Powerdevil (had an issue about it years ago; I only have a line in systemd saying lid close is disabled).
Following is my xset -q usual output.
$ xset -q
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