The GNOME desktop environment can be installed with the package gnome.
pacman -S gnome
Additional gnome packages can be installed with gnome-circle which contains various extra applications extending the GNOME ecosystem and gnome-extra which contains development tools as well as some further applications and games that fits well into GNOME.
For proper operation, you need to switch to GDM after installation.
sudo systemctl disable lightdm
sudo systemctl enable gdm
Only GNOME on Wayland is supported.
If your screen rotates incorrectly, you can install and configure the Screen Rotate extension.
sudo pacman -S extension-manager
Once installed, open the application.
Inside the application:
Browse > SearchScreen Rotate by shyzus.Installed tab in Extension Manager.1.If your device supports a stylus, it will only point correctly when the screen is rotated vertically by default.
To set this to instead work horizontally follow these steps.
fydetab.rules, run:sudo nano /etc/udev/rules.d/fydetab.rules
SUBSYSTEM=="input", ENV{ID_INPUT_TABLET}=="1", ENV{LIBINPUT_CALIBRATION_MATRIX}="0 1 0 -1 0 1 0 0 1"
Then press Ctrl + S to save and Ctrl + X to quit.
The Plasma desktop environment can be installed with the package plasma-desktop.
pacman -S plasma-desktop
This should result in a minimal installation of the plasma desktop. To install a more complete KDE experience choose either the package plasma (which lets you choose which plasma-related packages you want to install) or plasma-meta to get the full thing.
Click here to understand the difference between a group and a meta package.
Avoid the use of SDDM as this software is derelict! LightDM works fine with plasma.