How is it done right, choosing resolution?

I am looking at getting at finding the OS that suits me best, thinking of Debian and Slackware. Also Fedora.

I may have it totally wrong , but my assumption was that resolution depends on the size of you,re monitor and
graphic card.
Or do you mean that you are looking for the distro that can support the most suitable resolution fore you,re
monitor and graphic cart ?

all the best

If you mean display resolution, you can manually edit the xorg.conf file (on my system, it's /etc/X11/xorg.conf but that may differ by distribution). If you're running Slackware, there is a utility, xorgsetup, that configures it for you (you can also use xorgconfig in which you interactively enter values).

You need to check the documentation that came with your monitor before either manually editing xorg.conf or running interactive xorgsconfig. In particular, you need to know the manufacturer, model number and the horizontal and the vertical refresh/sync ranges (there are other values you will also set; e.g., mouse type). Again, if you're running Slackware the xorgsetup utility will, pretty much, do all that for you (it scans the hardware to determine values). Too, you ought to read through the manual page for xorg.conf to get an overview of what you're going to be doing; in general, don't guess -- get the correct values for the device before you start.

Hope this helps some.

Looking at graphics installers, they ask for a choice from a list. ...X...

My monitor is an old 8 by 11 inches. Might there be a figure at start-up?

I recommend you start with 800x600 then if things are too 'magnified' use 1024x786