Custom resolution for 1280x320 LCD

[matinzk]

Hi,

I have a 1280x320 pixels ultra wide LCD. Is it possible to have a custom resolution for this to make it work correctly connected via HDMI?

Thank you.

[matinzk]

I've done this but it doesn't output anything:
hdmi_force_hotplug=1
hdmi_group=2
hdmi_mode=1
hdmi_mode=87
hdmi_cvt 1280 320 60 6 0 0 0

[fruitoftheloom]

I've done this but it doesn't output anything:
hdmi_force_hotplug=1
hdmi_group=2
hdmi_mode=1
hdmi_mode=87
hdmi_cvt 1280 320 60 6 0 0 0

You have not stated how the LCD is connected or even a Manufacture / Model, is it a secret ??

[matinzk]

I've done this but it doesn't output anything:
hdmi_force_hotplug=1
hdmi_group=2
hdmi_mode=1
hdmi_mode=87
hdmi_cvt 1280 320 60 6 0 0 0

You have not stated how the LCD is connected or even a Manufacture / Model, is it a secret ??

No it's not a secret!

Chinese manufacturer and it's connected via HDMI.

Thank you.

[W. H. Heydt]

Chinese manufacturer and it's connected via HDMI.

That being a rather...unusual...resolution, can we have a link to it?

[matinzk]

There is no link really. I got it while I was over in China.

It looks like this:

[matinzk]

Is there a possibility to set he resolution to spill out? Just to elaborate; when I set the resolution to 1280x640 (double the height) it works fine but the picture is shrunk. If we could set it so it shows 1280x640 then it works for what we need it to.

Any help is appreciated.

Thank you.

[fruitoftheloom]

Is there a possibility to set he resolution to spill out? Just to elaborate; when I set the resolution to 1280x640 (double the height) it works fine but the picture is shrunk. If we could set it so it shows 1280x640 then it works for what we need it to.

Any help is appreciated.

Thank you.

So it has a converter board between the HDMi and Screen ???

[matinzk]

Is there a possibility to set he resolution to spill out? Just to elaborate; when I set the resolution to 1280x640 (double the height) it works fine but the picture is shrunk. If we could set it so it shows 1280x640 then it works for what we need it to.

Any help is appreciated.

Thank you.

So it has a converter board between the HDMi and Screen ???

Yes it's got its own controller with an HDMI input.

[fruitoftheloom]

Is there a possibility to set he resolution to spill out? Just to elaborate; when I set the resolution to 1280x640 (double the height) it works fine but the picture is shrunk. If we could set it so it shows 1280x640 then it works for what we need it to.

Any help is appreciated.

Thank you.

So it has a converter board between the HDMi and Screen ???

Yes it's got its own controller with an HDMI input.

Therefore for some reason the Controller Board is not reading the HDMi output of the RPi and translating that to the Sceen, so your Raspberry Pi is working as it should..

[matinzk]

It does output picture if I set the resolution at 1280x640 for example but it shrinks it. Hence why I asked if it's possible to make it spill out? Anything we can do in the config.txt file to achieve this?

Thank you.

[matinzk]

I set the resolution to 1920x480 pixels and it now outputs the image correctly. I can work with this.

I also have another LCD from the same manufacturer. 12.3" wide. Resolution is 1920x720 pixels. When I set the following in the config.txt file I get some white stuff at the bottom of the screen. Any ideas why?

This is my config.txt file contents:

Code: Select all

hdmi_force_hotplug=1
hdmi_group=2 
hdmi_mode=1 
hdmi_mode=87 
hdmi_cvt 1920 720 60 6 0 0 0

Here is the image of what the output looks like:


The manufacturer also has provided the following advising to set the HDMI to, but I'm unsure of how to set this up in the config.txt file.

Code: Select all

#define   Vclk_MHZ   132
#define	LCD_XSIZE	1920
#define	LCD_YSIZE	720
#define ADJHIGHT 	LCD_YSIZE

#define	LCD_BPP		16

#define FRAME_RATE	60

#define	LCD_ROTATE	0


#define  HBPD       110
#define  HFPD        8
#define  HSPW       8

#define  VBPD        10
#define  VFPD        10
#define  VSPW        4

Any help is appreciated. Thank you.