# Problem

Over time -- and what seems to be exacerbating the issue, is connecting/disconnecting external monitors -- "dead desktop areas" occur when running Linux virtual machines in Parallels. That is, areas where mouse click events are not possible (i.e. not possible to start a selection within the area, or click any buttons).

# Solution?

Kill the prldnd process on login.

``` bash
mkdir -p ~/.config/systemd/user

cat > ~/.config/systemd/user/kill-prldnd.service <<'EOF'
[Unit]
Description=Kill Parallels drag-and-drop daemon after login
After=graphical-session.target

[Service]
Type=oneshot
ExecStart=/bin/sh -c 'sleep 5; /usr/bin/pkill -x prldnd || true'

[Install]
WantedBy=default.target
EOF

systemctl --user daemon-reload
systemctl --user enable --now kill-prldnd.service
```
or, simpler

``` bash
sudo mv /usr/bin/prldnd /usr/bin/prldnd.disabled

sudo tee /usr/bin/prldnd >/dev/null <<'EOF'
#!/bin/sh
exit 0
EOF

sudo chmod 755 /usr/bin/prldnd
```