Connect Ubuntu 20.04 to TV with HDMI


I am trying to connect my ubuntu device to TV. But i can’t see video. I can’t see any display in ubuntu display settings also. Can someone suggest please. Thanks for your support in advance!

what ubuntu device are you trying to connect to your tv? can you provide some information about it? is it a desktop computer or laptop computer? what are the make and model?

there is usually a setting on the tv to tell it to receive its video signal from a different source. have you changed that? can you describe the process you are using?

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Hi Abhishek,
I am trying to connect with HDMI Cable. On TV, I have toggled to HDMI 2 Port as well.
Please find below device information
VERSION=“20.04.1 LTS (Focal Fossa)”
PRETTY_NAME=“Ubuntu 20.04.1 LTS”
Linux user 5.4.0-42-generic #46-Ubuntu SMP Fri Jul 10 00:24:02 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

with the hdmi cable disconnected can you run the command
dmesg -w
in a terminal. that command should allow you to see if your computer is recognizing the tv when the cable is plugged in. after running the command if you would connect the hdmi cable to the tv and let us know if the output from dmesg changed to show the connection.

if the tv is recognized and you get more messages from dmesg, it might help to copy and paste that output into your reply.

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I have several Notebooks and Desktops connected to HDMI devices (monitors, TVs, Beamers, …) over the years and never ran into such an issue.
To the question of Abhishek: Is it a notebook?
Have you connected it successfully to any HDMI decvice (e.g. monitor) beforehand?
If it’s a notebook, does it have some special keys to toggle between displays (somedays it’s a key called “Fn” or alike"?

i wanted to add a quick clarification that i’m not Abhishek :slight_smile: happy to help all the same. that just isn’t me.

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I am using Acer Travelmate-P2410-G2-M Laptop notebook


Hehe, my bad, sorry about that.
Don’t know, where this came from.


OK, seems that there are in fact some “special” function keys (the blue ones).
Have you tried pressing “Fn” and “F5” (or “F6”, I cannot see it correctly) when connected to the TV?

I tried your instructions. still, not connecting. Could you please do the needful

which instructions did you follow? it is necessary to get some more information about what you tried to be able to offer other suggestions.

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I have connected HDMI cable from laptop to TV and sourced to HDMI port 2 in TV. I tried Fn + F5 and also Fn + F6 also. But still no change. Please do the needful.

can you try this?

i am trying to see if your computer recognizes that the hdmi cable is being plugged into the television.


My tips may seem pointless, but you can try the following:

  • Connect the notebook to HDMI1 and check if the display appears in the display settings
  • Is the HDMI cable OK?
  • Have you tried connecting the HDMI before turning on the notebook?
  • Have you tried connecting your notebook to another monitor?

Yes, HDMI cable is ok. No, i tried connecting after turning on the notebook. No, i haven’t tried connecting notebook to another monitor.

can you try those to see if they help? or at least the first one if you don’t have another monitor.


Maybe we are looking at this from the opposite direction…
Have you tried to switch to the HDMI 2 of your TV via the remote?

Hello, I had the same problem and I solved following the clue that lubuntu recognizes only the monitors active at boot time. With TV turned on connected to the hdmi port I booted lubuntu and it works. Before doing that I checked that the hdmi port was connected by the command xrandr in the terminal. Then to adjust the display alignment I used the Arandr package and configured the output sound in Pulse audio volume cntrl.

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Go to settings > Displays and select Mirror under display mode.

If you cannot find anything in settings-Display option, then reboot to BIOS with connected HDMI and reset default settings and save. Now boot into OS and see again in Settings-Display option.