Troubleshooting; General Troubleshooting; Linux Troubleshooting - Mellanox Technologies ConnectX-4 Lx User Manual

6 Troubleshooting

6.1 General Troubleshooting
Server unable to find the adapter
The adapter no longer works
Adapters stopped working after installing another
adapter
Link indicator light is off
Link light is on, but with no communication
established
6.2 Linux Troubleshooting
Environment Information
Card Detection
53
• Ensure that the adapter is placed correctly
• Make sure the adapter slot and the adapter are
compatible
Install the adapter in a different PCI Express slot
• Use the drivers that came with the adapter or download
the latest
• Make sure your motherboard has the latest BIOS
• Try to reboot the server
• Reseat the adapter in its slot or a different slot, if
necessary
• Try using another cable
• Reinstall the drivers for the network driver files may be
damaged or deleted
• Reboot the server
• Try removing and re-installing all adapters
• Check that cables are connected properly
• Make sure your motherboard has the latest BIOS
• Try another port on the switch
• Make sure the cable is securely attached
• Check you are using the proper cables that do not
exceed the recommended lengths
• Verify that your switch and adapter port are compatible
• Check that the latest driver is loaded
• Check that both the adapter and its link are set to the
same speed and duplex settings
cat /etc/issue
uname -a
cat /proc/cupinfo | grep 'model name' | uniq
ofed_info -s
ifconfig -a
ip link show
ethtool <interface>
ethtool -i <interface_of_Mellanox_port_num>
ibdev2netdev
lspci | grep -i Mellanox
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