I need to know how to turn off a monitor through remote login in linux. And also how to turn it on. Pleas help....
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check if this exists,
Do the following,
If you get the DPMS error, do the following. Otherwise Skip.
If this file exists, then you can turn of your monitor from your terminal. You need to have ACPI enable in your kernel to do so, and the presence of this file ensures that it is.
^Use this command after that.
you can use this tutorial to see how to enable ACPI. Although it is usually set enabled by default in kernel.