force framebuffer resolution

flo

Hi all,

I have a problem with a orange PI pc. The framebuffer resolution is wrong after the system is booted up.
I have tried different solutions to fix the problem, it will boot up with 1024x768 but it should be 1280x2400.

Sometimes after a couple of reboots fb0 is 1280x2400p then it works..

This is how it should look like:

mode "1280x2400"
    geometry 1280 2400 1280 2400 32
    timings 0 0 0 0 0 0 0
    accel true
    rgba 8/16,8/8,8/0,0/0
endmode

Frame buffer device information:
    Name        : DRM emulated
    Address     : 0
    Size        : 12288000
    Type        : PACKED PIXELS
    Visual      : TRUECOLOR
    XPanStep    : 1
    YPanStep    : 1
    YWrapStep   : 0
    LineLength  : 5120
    Accelerator : No


The fbset command is not working --> "fbset -fb /dev/fb0 -g 1280 2400 1280 2400 32" , the result is --> ioctl FBIOPUT_VSCREENINFO: Invalid argument"

I have used rc.local,  "fbset -db /etc/fb.modes --all "1280x2400"

I tried armbianENV.txt with disp_mode not working :-(

(framebuffer path on NanoDLP is  = /dev/fb0)

/sys/class/graphics/fb0/modes = U:1024x768p-0  
/sys/class/graphics/fb1/modes = U:1280x2400p-0

Maybe force framebuffer fb0 to use U:1280x2400p-0 ???

I hope anyone can help, thank you!

Florian

Walter.O

Hi.
I have the same problem on a debian Distro, headless.
the defaut resolution mode for my screen is 1280x720, while I would prefer having a smaller one, like 1024x768 because my screen is really small (11 inch maybe) - the only resolution that was accepted during my tests was "640x480"

With the command

1. grep -r "1280x720" /usr/lib

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I was able to see more possible resolutions :
SCREEN_RESOLUTION=("1920x1080p60" "1280x720p60" "1920x1080p50" "1280x1024p60" "1024x768p60" "800x600p60" "640x480p60" "1360x768p60" "1440x900p60" "1680x1050p60")
But none of them seems to work , except 640x480p60 when I tried :

1. fbset 640x480-60

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I worked around the issue by modifying my console font setup (hence it's easier to read the screen).

with :

1. sudo setupcon -v

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I could list the default console font used by the system.

A list of fonts can be viewed in /usr/share/consolefonts/

Finally I modified the file /etc/console-setup/cached_setup_font.sh
and changed the default font with this one, much bigger :
'/usr/share/consolefonts/Uni3-Terminus24x12.psf.gz'
And then I ran the script :

1. sudo /etc/console-setup/cached_setup_font.sh

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I would rather change my framebuffer screen resolution, if anyone had the solution

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