Ethernet

PCI ID: 104d:9104

Driver: mts (MediaTek Star based Gigabit Ethernet)

Works out of the box. No extra setup requried after booting Linux.

Background

The PS5 GbE controller is based on the MediaTek Star Ethernet MAC (mtk_star_emac). The mts driver was written by rmuxnet with a base shared by slidybat and endless testing from c0w.

Kernel Config

CONFIG_MTS=y

Built-in by default in the ps5-linux kernel. No manual loading neccesary.

Troubleshooting

If the interface doesn't come up after first boot, disable and re-enable the wired connection in your network manager.

USB Ethernet Adapters Flaky

If you're using a USB-C or USB-A ethernet adapter instead of the internal port, some users report the connection toggling on/off repeatedly instead of staying stable. No fix identified yet, try a different adapter/cable if you hit this, or use the internal mts driver instead, it works on any supported firmware. If buying one, RTL8156B is the confirmed-working chipset to look for.

Internal GbE Slower Than USB Adapter

One report of the internal port (mts) bottlenecking around 300Mbps while a USB-C ethernet adapter on the same connection reached 940-980Mbps. Suspected cause per the mts driver author: an IRQ overflow pegging one CPU thread at 100%, capping throughput well below gigabit, not yet confirmed. Not fixed either way, if you need full gigabit, a USB adapter is a working fallback in the meantime.

IRQ/NAPI Bugs

A related but distinct bug was fixed upstream: on cold boot, a core could get pegged with useless load because the NIC never fired its interrupt and the driver looped forever, this is fixed.

A second bug remains unfixed: under heavy sustained TX load, a sticky ISR bit gets left set, causing the driver to keep re-kicking NAPI and pegging a core, reloading the driver does not clear it, only a reboot does. Only shows up under real stress (large sustained transfers), not normal use.