I've yet to find this to be a problem UNLESS folks are MIRRORING the laptop screen. If you do that the only good match is the same pixel count as the laptop screen.
Here I've been using a second monitor for decades. But I know not to mirror but to extend.
I'm getting ready to buy a new laptop and I'm concerned slightly about the screen or graphics.
I currently have a Sony Vaio SVE14A35CXH that has a 1600 X 900 resolution which supposedly is one of it's best features. I have it hooked up to an external monitor ASUS VS228 set to a resolution of 1920 X 1080, and it works perfectly.
I bought a new monitor @ a year ago and there was something about the monitor and the Sony laptop that didn't match up. I had to go back to the old monitor.
So now I am cautious about buying a new laptop? Is a new laptop not going to be able to connect with the 22 inch external? Am I going to have to buy a new monitor just because I bought a new laptop?
What am I supposed to be looking at in the the new laptop? For example, are cheaper laptops not capable of connecting to a 22 inch monitor? Do I have to buy a expensive laptop with superior specifications just because I intend to have an external monitor?