Arch Linux

kobhian

Member

Registered: 2021-02-07

Posts: 20

AQC108 10gbe only operating at 5gbe

Hello,

I have a OWC Thunderbolt 3 10Gbe Ethernet Adapter driver with a AQC108 adapter running the marvell AQtion driver

using ethtool, I get the following readings:

Settings for enp4s0:
	Supported ports: [ TP ]
	Supported link modes:   100baseT/Full
	                        1000baseT/Full
	                        10000baseT/Full
	                        2500baseT/Full
	                        5000baseT/Full
	Supported pause frame use: Symmetric Receive-only
	Supports auto-negotiation: Yes
	Supported FEC modes: Not reported
	Advertised link modes:  100baseT/Full
	                        1000baseT/Full
	                        10000baseT/Full
	                        2500baseT/Full
	                        5000baseT/Full
	Advertised pause frame use: No
	Advertised auto-negotiation: Yes
	Advertised FEC modes: Not reported
	Speed: 5000Mb/s
	Duplex: Full
	Auto-negotiation: on
	Port: Twisted Pair
	PHYAD: 0
	Transceiver: internal
	MDI-X: Unknown
netlink error: Operation not permitted
        Current message level: 0x00000005 (5)
                               drv link
	Link detected: yes

as you can see, it detects the link speed of 10gbe, but for some reason it's defaulting to 5gbe

note: I had a 5gbe aquantia usb-c ethernet adaptor running on this system before switching to 10gbe

Any pointers on what I can check that may be forcing the 5gbe speed?

Thanks!

Last edited by kobhian (2022-07-22 17:52:26)

Jubijub

Member

From: Zurich, Switzerland

Registered: 2018-04-04

Posts: 34

Re: AQC108 10gbe only operating at 5gbe

https://github.com/Jubijub/arch-config/ … intel-x550

I ran into the same problem with my Intel X550, and this is how I solved it (I documented this on my install notes, which is what I linked above)