Autostart KRDP on Manjaro with KDE Plasma

1. Install required packages

sudo pacman -Syu --needed krdp kwalletmanager kwallet-pam qt6-tools

2. Enable Autologin

1. Go to System Settings - Login Screen (SDDM)
2. In Behavior, enable Automatically log in
3. Select your user account
4. Apply

3. Set Blank KWallet Password

1. Open KWalletManager
2. Select your default wallet (kdewallet)
3. Click on Change Password...
4. Leave both Old and New password fields completely empty
5. Apply

4. Configure KRDP Server

1. Go to System Settings - Networking - Remote Desktop
2. Toggle on the Enable RDP Server
3. Add your user account and set a password under "Usernames"
4. Check Autostart at login toggle below
5. Apply

5. Configure firewall

sudo firewall-cmd --permanent --new-service=rdp
sudo firewall-cmd --permanent --service=rdp --add-port=3389/tcp
sudo firewall-cmd --permanent --service=rdp --set-description="Remote Desktop Protocol"
sudo firewall-cmd --permanent --zone=public --add-service=rdp
sudo firewall-cmd --reload

6. Create Wallet Auto-Open Service

mkdir -p ~/.config/systemd/user

cat > ~/.config/systemd/user/open-kwallet.service << EOF
[Unit]
Description=Open KWallet
After=plasma-kwallet-pam.service kwalletd6.service
Wants=plasma-kwallet-pam.service

[Service]
Type=oneshot
ExecStart=/usr/bin/qdbus6 org.kde.kwalletd6 /modules/kwalletd6 org.kde.KWallet.open kdewallet 0 "$(whoami)"
RemainAfterExit=yes

[Install]
WantedBy=graphical-session.target
EOF

7. Make KRDP Wait for Wallet

systemctl --user edit app-org.kde.krdpserver.service

Edit empty section to look like this:

### Anything between here and the comment below will become the contents of the drop-in file

[Unit]
After=open-kwallet.service plasma-kwallet-pam.service kwalletd6.service
Wants=open-kwallet.service

### Edits below this comment will be discarded

8. Enable Services

systemctl --user daemon-reload
systemctl --user enable --now open-kwallet.service
systemctl --user enable --now app-org.kde.krdpserver.service

9. Adjust resolution

If you have a 4K+ monitor, you may want to adjust the resolution for better performance:

1. Go to System Settings - Display and Monitor
2. Select Display Configuration
3. Select Resolution 1680x1050
4. Apply

10. Reboot

sudo reboot

11. Connection

From Windows, you can connect using Thincast Remote Desktop Client.