diff --git a/qemu/bin/linux b/qemu/bin/linux
index 89e5d6a..513afbc 100755
--- a/qemu/bin/linux
+++ b/qemu/bin/linux
@@ -1,6 +1,7 @@
-#!/bin/sh -ex
+#!/bin/sh -x
 qemu-system-x86_64 \
 	-enable-kvm \
+	-M q35 \
 	-cpu host -smp "$(("$(nproc)" / 2))" \
 	-m "$(("$(free | awk '($1 == "Mem:") { print $2 }')" / 2))K" \
 	-net nic \
diff --git a/qemu/bin/redox b/qemu/bin/redox
index ba22d10..8cb3f11 100755
--- a/qemu/bin/redox
+++ b/qemu/bin/redox
@@ -4,7 +4,7 @@ exec qemu-system-x86_64 \
 	-M q35 \
 	-cpu host -smp "$(("$(nproc)" / 2))" \
 	-m "$(("$(free | grep '^Mem:\s' | awk '{ print $NF }')" / 2))K" \
-	-device ich9-intel-hda -device hda-duplex \
-	-netdev user,id=net0 -device e1000,netdev=net0 \
+	-device e1000,netdev=net0 \
 	-device nec-usb-xhci,id=xhci \
+	-device ich9-intel-hda -device hda-duplex \
 	"$@"
diff --git a/qemu/bin/redox-spice b/qemu/bin/redox-spice
index 671802b..2da44b2 100755
--- a/qemu/bin/redox-spice
+++ b/qemu/bin/redox-spice
@@ -1,4 +1,4 @@
 #!/bin/sh -ex
 exec redox \
-	-vga qxl -spice port=5900,addr=127.0.0.1,disable-ticketing=on \
+	-vga qxl -spice port="$(first-free-port 5900)",addr=127.0.0.1,disable-ticketing=on \
 	"$@"