Low screen resolution on Orange Pi PC 3 LTS

[rammfire]

Good afternoon.

The problem is indicated in the title. The computer is connected to my monitor via HDMI and the screen resolution is only 1024x768. Which is inconvenient to use. I saw a similar topic raised on the official forum of a single-payer in 2019, but no one answered there. Is this a problem of the computer itself or the Linux kernel or drivers?

[atone]

Hi, did you tried this https://docs.armbian.com/User-Guide_Fine-Tuning/#screen-resolution-on-other-boards?

[jernej]

10 hours ago, rammfire said:

1024x768

That is default fallback resolution when kernel can't read resolution info from display (on all platforms and architectures). There can be multiple reasons, like cable, monitor, some kernel/driver issue...

[rammfire]

@atone

Цитата

Hi, did you tried this https://docs.armbian.com/User-Guide_Fine-Tuning/#screen-resolution-on-other-boards?

 

Thanks. This particular line of code helped me.

xrandr --newmode "1440x900_60.00" 106.50 1440 1528 1672 1904 900 903 909 934 -hsync +vsync

 

However, when I try to execute this line of code, I get an error.

xrandr --output HDMI-1 --mode 1920x1080_60.00
xrandr: cannot find mode 1920x1080_60.00

 

I don't fully understand how to execute this command, or will I fail to raise the screen resolution to the desired result?

[atone]

I think you maybe skipped a step: before setting the display to a specific mode (--output), you need to add this mode to the display first (--addmode).

[atone]

45 minutes ago, rammfire said:

will I fail to raise the screen resolution to the desired result?

 

If you see nothing anymore, just reboot.

[rammfire]

@atone

Good morning. Thank you for your tips on what to read. This page finally helped me:

https://askubuntu.com/questions/138408/how-to-add-display-resolution-for-an-lcd-in-ubuntu-12-04-xrandr-problem

 

xrandr --newmode "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync

xrandr --addmode HDMI-1 1920x1080_60.00