Hi there!

I've installed Armbian 23.02.0 Jammy on my Banana Pi M5.

And I'm using 3.5" display with HDMI interface. The screen has a native 480x320 resolution, but accept a range from 640x480 to 1920x1080.

On resolutions over 800x480 is not readable, so I'm able to change resolution with the following line in /boot/armbianEnv.txt 

 

extraargs=video=HDMI-A-1:800x480M@87 fbcon=rotate:0

 

with lower resolutions 800x480 to 640x480 (60 to 87hz) the screen has an offset down of one character line so ther's a blank line up and I don't see login and shell input command down. 

Looking at 16:9 resolutions I see all the text with the minimum of 896x504

I don't know how to set overscan and screen offset up 1 character line with 800x480 o 720x480. Every help will be appreciated.

 

Edited March 12, 20233 yr by Mechano

I have the same problem, for now I use ssh on 192.168.0.8 from a remote computer to be able to use the console...

I've found 2 workarounds... 

The firs one:

 

Change setenv line into boot.cmd with 480p@60 and recompile the boot.scr with the line you find at the end of the file boot.cmd.

And add this line to armbianEnv.txt 

 

extraargs=video=HDMI-A-1:720x480M@60 fbcon=rotate:0

 

I've left rotate to change if I need (values 0, 1, 2, 3).

 

Another workaround I used before find this one was to set a particular resolution of 896x504@87hz it's divisible /8 and permit on this display to see the login.

 

With Raspberry Pi 3B I can set 640x360 and is perfect for this display with linux text console.
 

Edited March 16, 20233 yr by Mechano

Finally a good compromise and readability of this nice 3.5" small HDMI screen with Banana Pi M5 console only (no X.org).

I remember it's a physical resolution of 480x320 with an EDID range of resolutions from 720x480 to 1920x1080. 

The smallest resolution I can get with Banana Pi M5 is 720x480@60hz that you can see in the picture. 

Raspberry Pi 3B can do 640x360@85hz and has better character sharpness.