Forth row of Start screen tiles...?

From other post, changing the MonitorSize to 13.1 will work too. The keyboard is still visible in good size.

Permanent resolution:

.reg begin -->

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Scaling]
"MonitorSize"="15.4"

<-- end

Reboot after adding the reg value.

One more thing - after doing this, flip to portrait mode, swipe Settings -> Tiles -> "Show more tiles" to enable a total of 9 rows in portrait.

Note that this only affects the modern ui; and, only scales to the minimum permittable font scaling for the actual resolution.
 
I just did 12.1, which I read is the smallest you can do. It works for me. the keyboard is slightly smaller than normal, but it works for me. I can always switch back. But a 4 row looks great, Iove it!
 
I just did 12.1, which I read is the smallest you can do. It works for me. the keyboard is slightly smaller than normal, but it works for me. I can always switch back. But a 4 row looks great, Iove it!

Yup that's right, saw on XDA that 12.1 gives you a more usable on screen keyboard. It's perfect.
 
I turned my Surface on today and I have 4 tile rows. I didn't do this mod. ???

That would be a bug that happens if your Surface boots while the cover is closed. Turn the screen off and on and it'll be back to normal.