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I have a raspberry pi running Debian. I want to set up a cron script so that the screen automatically goes into sleep mode (no power) at a given time and goes out at another time. The built-in screensaver is just blanking the screen, but it's still powered up, and in fact, there's a little lightening bolt in the upper-right hand corner even when the screen is "off".(1)

So what should I do? I've tried installing xscreensaver but it doesn't seem to power down the screen or put it in sleep mode. This should be a simple command line thing, but I can't find it.

(1) - Which I just discovered is a BAD THING --- What does the lightning bolt mean? --- but that's another matter

vy32
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    Possible duplicate of [Power TV on/off](https://raspberrypi.stackexchange.com/questions/11675/power-tv-on-off) – Dmitry Grigoryev Jul 03 '19 at 12:14
  • I'll give it a try tonight and let you know if it is a duplicate, @DmitryGrigoryev. Thanks. – vy32 Jul 03 '19 at 12:44
  • Also check out [this one](https://raspberrypi.stackexchange.com/questions/22039/turning-on-hdmi-programmatically-doesnt-work) – Dmitry Grigoryev Jul 03 '19 at 12:59
  • Interestingly, it was the question that had the answer, not the answer. It's also not clear, so I will just answer it here. – vy32 Jul 04 '19 at 02:05

1 Answers1

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This command puts it into standby now, suspend in 30 seconds, 60 seconds off:

xset dpms 0 30 60

This command will blank the display and put it in standby mode immediately: 

xset dpms force standby
vy32
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