Disable Laptop Display (xset and vbetool have both failed) | pressku.com

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I'm moving Ubuntu Server connected a Dell Latitude E7240 Laptop. I'd for illustration to person nan show turned disconnected while closing lid and erstwhile one want to. I've tried utilizing xset dpms unit disconnected which returned: xset: incapable to unfastened show ""

I've besides tried vbetool dpms disconnected which returned Real mode telephone failed

How tin I achieved that?

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