In this particular case you may need to check with your computer manufacturer and see if this setting can be actually adjusted.
Keep in mind that the TV and the monitor may support different resolutions, so the TV will try to set the best possible resolution.
Would you please let me know which Graphics driver are you using? Have you tried using only the TV as your video device? Can you set a better resolution on it?
May I have the model of the TV you are using ?
Bear in mind that we provided generic drivers; and sometimes these cannot be installed on other systems or the installation of them could overwrite their customizations and possibly change the functionality of the graphics.
So we really recommend you to install the latest drivers provided by your system manufacturer, in this case Acer.
Finally, I get a solution thanks to the advices of a user of the Acer Community. I put here what I have done:
First, I plugged the HDMI wire and selected dual display, then I changed the resolution of my system to 1280*720, and now a new option appears in the aspect ratio field for the TV, the new option is "Maintain Aspect ratio", if I choose it, I can see the image in full screen on my TV.
I am going to put some screenshots:
- First, I change the resolution of the screens in dual display mode:
- Now a new option appears on the intel hd graphics management application:
It's a bit weird to have to do all of this to get dual display with full screen in the TV. It would be better if the image was auto-scaled to full screen. I suppose that this is caused because my TV is 16:9 and the Acer Switch 10 is 16:10; but this is weird anyway. It should be easier.