Too stupid laptop image to transfer to TV, duplicate (HDMI)?

My
2

I'm a little desperate… Actually, it shouldn't be a big deal, HDMI to the Lappi and the TV (Smart TV, but not that new either) and then select the respective source on the TV…

But all that is possible is the extended mode, i.e. Like 2 screens side by side, but I just want it to be duplicated, i.e. What is played on the Lappi is also shown on the TV…

If I choose the "duplicate" mode on the PC, the TV suddenly no longer recognizes a signal…

Ar

It may take your PC a while to do this.

Otherwise there's something wrong with the resolutions, that's funny…

Ar

I would see which resolutions your TV can process and then pick out which ones I can expect from the laptop.
It could work like this.