Connecting a TV via HDMI

Dan Armbrust daniel.armbrust.list at
Fri Sep 11 05:00:08 BST 2020

Many laptops still have a hardware key - typically a "Fn" + a number key that toggles the 
laptop hardware between laptop screen, laptop screen mirror to hdmi, and laptop screen and 
hdmi as distinct monitors.

Try playing with that... before going into the kde settings - hopefully it shows up as two 
devices then...

On 9/10/20 6:10 PM, Dave Close wrote:
> I have a Motile M141 laptop running Fedora 32 with KDE and completely
> up-to-date on all software according to DNF. I'm really very happy
> with the laptop. It's fast, light-weight, and capable. The built-in
> screen runs at 1920 x 1080.
> When I attach a TV using an HDMI cable, the laptop screen goes dark
> and the TV screen lights up. I get the same effect if the TV is
> attached before the laptop boots. The TV runs at a lower resolution
> but the picture adjusts properly. But there doesn't seem to be any
> way to get both screens to light up concurrently, either as a mirror
> or extension.
> Running KDE systemsettings while the TV is connected and viewing the
> output on the TV, systemsettings reports two displays but only shows
> one movable outline. The resolutions are reported differently for
> the two with the laptop screen resolution showing as 1920 x 1080. But
> nothing I've tried seems to make the laptop screen light up. Except
> disconnecting the HDMI cable which, of course, makes the TV go dark.
> Getting both screens working is my primary interest here and I'd
> appreciate any suggestions. But if and when that is resolved, I'll
> face the issue of overscan on the TV. To save time later, I'll ask
> now: Is there a way to shrink the TV display so that the edges are
> all visible?

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