Mellanox MT27710 Family ConnectX-4 Lx fails to connect

Solution Unverified - Updated -

Issue

  • Mellanox ConnectX-4 Lx can't connect.
  • The device recognizes but mlx5_core doesn't work.
$ lspci -v
...
bd:00.0 Ethernet controller [0200]: Mellanox Technologies MT27710 Family [ConnectX-4 Lx] [15b3:1015]
...
        Kernel modules: mlx5_core
  • Some error messages can be seen during boot
...
[   64.244009] mlx5_core 0000:bd:00.0: wait_func: ...(snip)... : ENABLE_HCA(0x104) timeout. Will cause a leak of a command resource
[   64.244014] mlx5_core 0000:bd:00.0: mlx5_function_setup: ...(snip)... : enable hca failed
[   64.255104] mlx5_core 0000:bd:00.0: probe_one: ...(snip)... : mlx5_init_one failed with error code -110
[   64.255378] mlx5_core: probe of 0000:bd:00.0 failed with error -110
[   64.255661] mlx5_core 0000:bd:00.1: firmware version: 14.32.1010
[   64.255691] mlx5_core 0000:bd:00.1: 63.008 Gb/s available PCIe bandwidth (8.0 GT/s PCIe x8 link)
...

Environment

  • Red Hat Enterprise Linux 8
  • mlx5_core

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