Add upnet script.

system-bin/upnet

@@ -0,0 +1,20 @@
+#!/usr/bin/bash
+# Workaround for RT8822BE wireless cards wifi issue when using the new rtwpci driver.
+
+if [[ "$UID" -ne 0 ]]; then
+  echo "You need to run the script as root."
+  exit
+fi
+
+# Change the ASPM mode using the Link Control Register according to https://wireless.wiki.kernel.org/en/users/documentation/aspm#enabling_aspm_with_setpci (requires pciutils)
+if command -v setpci >/dev/null; then
+  if setpci -s 00:1c.5 0x50.B=0x40 && modprobe rtwpci; then
+  # Uncomment the next line and change it to match your network services and init in use.
+    systemctl restart iwd systemd-networkd systemd-resolved
+    echo "ASPM configurations applied. Restart your network services if you haven't set them in the script."
+  else
+    echo "An unknown error has occurred. Reboot and try again."
+  fi
+else
+  echo "You need to have pciutils installed in your system."
+fi