On 2020-02-10 21:36, Patrick O'Callaghan wrote:
On Mon, 2020-02-10 at 20:40 +0800, Ed Greshko wrote:
On 2020-02-10 20:14, Patrick O'Callaghan wrote:
So I changed that to turn autoneg on and speed to 1000, and rebooted. The system came up with no network, so I reverted the change. Clearly that isn't the right way to do it.
Recommendations are welcome.
Well, I use network manager and my network-script for enp2s0 only has
ETHTOOL_OPTS="autoneg on"
Could be that if you have autoneg on and then specify other stuff that should be taken care of by the autoneg you cause issues.
I tried that (note that I've never touched that file before now so I don't know where the settings originally came from) and now it does come up, but is still running at 100Mbps. I rebooted both my box and the router, but no difference. Both ends definitely support 1000Mbps but my end now shows:
$ sudo ethtool enp4s0 Settings for enp4s0: Supported ports: [ TP MII ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Supported pause frame use: Symmetric Receive-only Supports auto-negotiation: Yes Supported FEC modes: Not reported Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Advertised pause frame use: Symmetric Receive-only Advertised auto-negotiation: Yes <---------------------* Advertised FEC modes: Not reported Link partner advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full Link partner advertised pause frame use: Symmetric Receive-only Link partner advertised auto-negotiation: Yes Link partner advertised FEC modes: Not reported Speed: 100Mb/s <---------------------* Duplex: Full Port: MII PHYAD: 0 Transceiver: internal Auto-negotiation: on <---------------------* Supports Wake-on: pumbg Wake-on: d Current message level: 0x00000033 (51) drv probe ifdown ifup Link detected: yes
The key is....
Link partner advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full
The other side is telling that it only supports 100Mb/s