Great helpfull tool, thank you!

on my Raspberry, only the upper half of the screen is filled with random data which makes it hard to set the lower right corner.

Hey,
Is it possible to implement the same to get a rotation on the fly? I made a 2 in 1 computer and I would like to be able to do so.
Thanks

If the screen is rotated using display_rotate, this won't quite work the way it should... left and right and up and down are in reference to the actual hardware on the screen, but this application still moves and rotates relative to the way the screen is rotated in software.

I am VNC ing in to the PI which has a composite display attached.

But I get this message on the screen and using arrow keys does not seem to change anything.

TOP=32, LEFT=32, BOTTOM=32, RIGHT=32   
set_overscan.sh: 170: set_overscan.sh: GPU_OVERSCAN_TOP--: not found
-ne 

Do you have any advice?
Thank you very much.

Using this code to set overscan settings is not compatible with applications using the GPU. For example Minecraft.
One thing is that those applications draw outside of the black areas, it is not a big problem.
The bigger problem is that those apps lock-up the system after some time. Sometimes it's one minute, sometimes it's 20 minutes.
Also, if a total system lock-up doesn't happen then the cursor might get frozen in 5 second intervals.

This behaviour is the same in the old and the new version.

I'm using a RasPi to emulate old games, and I've stumbled onto a dilemma that this program appears to be the closest thing to a solution for:

1. When overscan_scale is turned off, dispmanx apps do not respect overscan settings and the edges of the menu GUI get cut off

2. when overscan_scale is turned on, games run in emulators get nasty scaling artifacts

My hope is to be able to use this program to turn off overscan compensation completely when an emulator is launched, ensuring as close to pixel-perfect display as is possible, and to set it back to a sensible value when returning to the menu GUI.

Unfortunately, it seems like while the text console obeys new overscan settings, dispmanx-using apps including both emulators and the menu program continue to use whatever was set at bootup. Is there anything that this program could do about that? Or could it possibly even toggle the overscan_scale setting during runtime in a way that would affect newly-launched dispmanx programs?

I know this is dated and maybe no longer works, but I though I'd give it a shot. I'm getting:
set_overscan.sh: 42: set_overscan.sh: function: not found
when I try to run this. Am I doing something wrong? Does this no longer work? Is there a better way now?

raspberrypi/linux#3090

So this script should work now right?
When trying to adjust the overscan the junk area corners of the screen don't move/update.
Manually adjusting the fields work just fine.
(I know how this script runs, I had it running on my Pi 3 just fine).

The script erased everything in my config.txt.

Didn't work either (it couldn't find the "arrows" command).

This program was really helpful - thanks for putting it together. I had trouble in that no matter how I set disable_overscan in /boot/config.txt and rebooted, I would get the same error message :

"Overscan is currently disabled. Please add the line disable_overscan to the bottom of the config.txt"

I tried:

• disable_overscan=0
• disable_overscan=1
• disable_overscan
• #disable_overscan=0
• #disable_overscan=1
• #disable_overscan

When I ran vcgencmd get_config int, I would see disable_overscan=1 regardless of the settings I had in /boot/config.txt.

Anyway, commenting out the block of code in set_overscan.sh that tests for overscan (if [ vcgencmd get_config disable_overscan | awk -F '=' '{print $2}' -eq "1") allowed the program to run perfectly.

Set overscan program not working with kernel 4.x on raspberry pi ..