HD TV resolution problem

1

Hi, how can I set the HDMI output to 720p. All the usual settings in the config.txt file seem to be ignored. All I get is a huge background image with no access to the menu buttons. :face_with_raised_eyebrow:

2

Will you try to change the resolution? It works for me.
The first way is simple.

1. Change configuration file directly.
a. Connect to target device via ssh

ssh root@192.168.0.5(target device's IP)

b. open configd_db.json in /var/preferences on target device

vi /var/preferences/configd_db.json

c. Modify resolution value of “compositerGeometry” (default value : 1920x1080)

{
    "com.webos.surfacemanager": {
         "compositorGeometry": "1920x1080+0+0r0"
    },
    ...
}

d. Save the file and reboot

2. Set resolution by configd service’s method via luna-send command
a. connect to target device via ssh
ssh root@192.168.0.5(target device's IP)

b. Check current resolution. Put the below command :
luna-send -f -i palm://com.webos.service.config/getConfigs '{"configNames":"com.webos.surfacemanager.compositorGeometry"]}'

response :

{    
       "subscribed": false,
        "configs": {
        "com.webos.surfacemanager.compositorGeometry": "1920x1080+0+0r0"
    },
    "returnValue": true
}

c. Change resolution. Put the below command :
luna-send -n 1 -f luna://com.webos.service.config/setConfigs '{ "configs":{"com.webos.surfacemanager.compositorGeometry": "1280x720+0+0r0"}}'

response:

{
    "returnValue": true
}

d. reboot

If anyone knows the better way to change resolution, please share :slight_smile:

3

Hi, can you be a bit clearer what the actual commands are?

4

I updated. The way(#1. Change configuration file) is simple.
Please refer to http://webosose.org/develop/ls2-api/ls2-api-development/ and http://webosose.org/develop/ls2-api/ls2-api-reference/com-webos-service-config/

5

Doesn’t work, all i get is this -

root@raspberrypi3:~# luna-send -f -i palm://com.webos.service.config/getConfigs’{“configNames”:[“com.webos.surfacemanager.compositorGeometry”]}’
luna-send uri message
-h this help screen
-P send over the public bus (deprecated, has no effect)
-s send a signal
-a send specified appId in message (default is none)
-m service name (default is none)
-d turn debug logging on
-i turn on interactive mode
-t x average over x times getting one response
-n x exit interactive mode after x replies
-l number responses
-f format JSON responses usefully
-q apply specific query to responses (multiple queries may be supplied), e.g.:
-q ‘returnValue’ -q ‘queues[0]’
-w x Set exit timeout value to be ‘x’ milliseconds

6

The command should be in one line. Could you try again?
You can get current config value with getConfigs and change the value with setConfigs.

luna-send -f -i palm://com.webos.service.config/getConfigs '{"configNames":["com.webos.surfacemanager.compositorGeometry"]}'

luna-send -n 1 -f luna://com.webos.service.config/setConfigs '{"configs":{"com.webos.surfacemanager.compositorGeometry": "1280x720+0+0r0"}}'

Also, you can try modify configd_db.json in /var/preferences on target device.

7

still no luck, now all I get is >

root@raspberrypi3:~# luna-send -n 1 -f luna://com.webos.service.config/setConfigs ‘{ "configs”:{“com.webos.surfacemanager.compositorGeometry”: “1280x720+0+0r0”}}’

8

Could you please put the command on terminal manually?(Do not copy and paste.)

Why don’t you try modify configd_db.json in /var/preferences on target device?

9

Tried this but it keeps getting reset to the default values after reboot.
None of these solutions work :confused:

10

I adjusted the resolution in two ways… I’m sorry I can not help you. :sob:

11

I think its an issue with the TV. Thanks for your help.

12

I tried to do below command in my official raspberrypi3 touch screen (800x480) and below command works. After running below command, you should reboot.

luna-send -n 1 -f luna://com.webos.service.config/setConfigs ‘{ "configs”:{“com.webos.surfacemanager.compositorGeometry”: “800x480+0+0r0”}}’

FYI
official raspberrypi3 touch screen is not supported yet. I add some features in my local.

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13

Fixed! :grinning: It was a keyboard input problem with the 's and the "s. for some reason they were being changed as I typed, could be the japanese keyboard i’m using.

14

Guys, i have the similar problem. However, additionally, my raspberry only has wifi access. hence, ssh’ing is difficult.
Therefore, i was wondering. Is there a command that cancels the entry to the GUI. If i stay in the prompt, i can manually alter the resolution command.
thanks!
best,
hans

15

I am glad that your problem has been resolved. :slight_smile:

16

If you have serial cable for raspberry pi 3, you can use console without network setting.
https://developer.android.com/things/hardware/raspberrypi.html

17

Thanks. I found a solution in the end.
I manually changed the resolution and now works like a charm!

18

Can i set a custom refrash rate?

19

hi, Changhyeok, could you share what you had done in your local?
I had tried what you said to make my officail raspberrypi3 work with webos, but failed. I can boot the raspberrypi, but the touch screen only showed part of the content. I can not make all the content shown in the screen.

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20

@wistoch Which touch screen do you use? RPI official 7inch touch screen or others? Then what's your touch screen resolution?

1 Like