eth0 only works on 10Mbit/FD

[ananas]

Hi,

As far as I can remember I think my Mark V has always worked on 100Mbit/FD on its LAN port.

Recently I started having troubles with the device, couldn't reach it anymore through the LAN. As I wasn't actively using it at that moment I left it for what it was.

Now a few months later I wanted to get working on the device again and had to troubleshoot why I couldn't reach it anymore.

After a lot of testing and trying settings it seems I can only get layer 2 and higher connectivity when the device operates at a fixed linerate of 10Mbit/FD.

Things I have tested:

- Different (verified to correctly work) cables

- Different network devices

- Set speed/duplex on auto mode (this negociates the line to 100Mbit/FD on the Mark V side, the other side can't really get a connection, the line flaps really fast. If checked with ethtool 90% of the time it reports up and 10% of the time it reports down)

- Set speed/duplex fixed on 100Mbit/FD

- Upgraded firmware to latest version

- Tried different power adapter

I also wanted to try a full reset using the recovery firmware, however when I set the dip's to their correct positions I am unable to get a connection to the device. I did do a factory reset which didn't help.

Another thing I find mildly weird is that the device reports it can run on 1Gbit, however the Mark V specs say 100Mbit.

Below is the current output of ethtool with the speed/dup set to fixed.

root@Pineapple:~# ethtool eth0

Settings for eth0:

Supported ports: [ TP MII ]

Supported link modes: 10baseT/Half 10baseT/Full

100baseT/Half 100baseT/Full

1000baseT/Full

Supported pause frame use: No

Supports auto-negotiation: Yes

Advertised link modes: 10baseT/Full

Advertised pause frame use: No

Advertised auto-negotiation: No

Speed: 10Mb/s

Duplex: Full

Port: MII

PHYAD: 4

Transceiver: external

Auto-negotiation: off

Current message level: 0x000000ff (255)

drv probe link timer ifdown ifup rx_err tx_err

Link detected: yes

Does anyone have any suggestions left I could try, or am I to accept that my LAN port is defective?

Edited October 26, 2015 by ananas