Terminal resolution on x86

General Discussion
1

I have a spare desktop with dietpi installed.
I have a spare 4K TV on this desktop.

I can’t change the resolution of the TV to something lower, so how can I change the resolution of the terminal locally? Is there a way to force it to run at 1080 or 720?

I’ve tried adding
framebuffer_width=1280
framebuffer_height=720
to /boot/dietpi.txt

There are settings for xorg and VPN, but nothing for HDMI or terminal resolution.
TIA
Daz.

2

You can try and adjust the resolution with dietpi-config

3

Hey Jappe, this does nothing on the X86.

4

Do you want to change really the resolution of the display or the font size of the terminal?
And I’m assuming correctly you don’t run a desktop environment, but a headless installation?

5

I’d prefer resolution, force 1080P. But font size might do just as well.
Yes it’s headless, though I do use need local access a couple of times a week.

6

In terms of a headless system, why not using SSH to connect?

7

I do 98% of the time, but there are times I need to use it directly.

8

I was able to set the resolution with a bootparameter in /etc/default/grub but when the tty loads, it gets overriden by something.
Then I found this: https://github.com/MichaIng/DietPi/issues/1227#issuecomment-368846000 and I added / changed this:
(sudo nano /etc/default/grub)

GRUB_CMDLINE_LINUX_DEFAULT="nomodeset"
GRUB_GFXMODE=800x600
GRUB_GFXPAYLOAD_LINUX=keep

Change GRUB_GFXMODE= to your desired resolution.
then do: sudo update-grub and reboot.
It worked for me :slight_smile:

edit: Here a guide how to find out working resolutions for your TV:
https://feitam.es/how-to-change-display-resolution-in-tty-console/

3 Likes
9

Thank you Jappe, finally sorted and running at much better 1080p

1 Like