Claudio Vicario composed on 2026-06-25 15:36 (UTC+0200):
> i’ve tried to change the output resolution but idk how to change it via CLI
> on Debian.
> Someone here know it?
For the vttys, it's pretty simple. If your display is 3840x2160, try adding to
Grub stanza's linu line one of the following
video=2560x1440
video=2048x1152
video=1920x1080
If it's 2560x1440, try one of
video=2048x1152
video=1920x1080
video=1600x900
If it's 1920x1080, try one of
video=1600x900
video=1280x720
Use xrandr in an X11 terminal to determine resolutions supported by your
display.
<https://www.kernel.org/doc/Documentation/fb/modedb.txt>
If your GUI is employing the intel driver from xserver-xorg-video-intel, it may
inherit the kernel cmdline's video= resolution.
Whether it's possible to change on an already booted system, I have no idea.
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