How to change display resolution? After Nvidia Driver installed 螢幕解析度 單一 固定 無法調整 顯卡驅動

Want to change from 2560x1600 to 1920x1200

Preparation:

sudo vim /etc/default/grub
from "#GRUB_GFXMODE=640x480" to GRUB_GFXMODE=1920x1200
sudo /etc/gdm3.custom.conf
from #WaylabdEnable=false to WaylabdEnable=false

Solution1: using xrandr

sudo apt install xrandr
cvt 1920 1200 60
sudo xrandr --newmode "1920x1200_60.00"  193.25  1920 2056 2256 2592  1200 1203 1209 1245 -hsync +vsync
sudo xrandr --addmode DP-4 "1600x900_60.00"
or sudo xrandr -s 1920x1200
reboot

Solution2: changing /etc/X11/xorg.conf

sudo nvidia-xconfig # generate a new one
sudo vim /etc/X11/xorg.conf
adding Modes
     
Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    SubSection     "Display"
        Depth       24
        Modes      "1920x1200" "2560x1600"
    EndSubSection
EndSection
 
reboot

Solution3: using nvidia-settings

sudo apt install nvidia-settings
sudo nvidia-settings
XServer Display Configuration > Resolution > 1920x1200 > Apply > Save to X Configuration
reboot

Solution4: using xdiagnose

sudo apt install libgtk-4-dev gtk-4-examples
sudo apt install gir1.2-gtk-3.0
sudo apt install --reinstall python3-gi gir1.2-gtk-3.0
 
sudo vim /usr/lib/python3/dist-packages/xdiagnose/applet.py
adding version
 
from gi import require_version
require_version('Gtk', '3.0')  # Ensure GTK 3 is used
 
sudo xdiagonose
reboot

Solution5: using fractional scaling

It can seperately fractional scale the displays. i.g. one for 125% the other for 100%