I've been trying to fix this problem for hours and I got nothing. Here what I got.
Just bought 10g card (intel x550-T1). Put it in my server, installed the drivers from intel website ($ make install). Change the MTU to 9014 ($ ip link set "name" mtu 9014). With all that. It work. I get 10gb from it. transfer files like crazy. The end. Nope. Next day came by. I reboot the server and now its no longer works. The card is working as i did boot to windows and it work fine. Did a few commands to see whats going on and here what I got.
$ /sbin/modinfo ixgbe | grep version
version: 5.7.1
srcversion: 720A79B0425CF0E9E12CB84
$ sudo lshw -class network
*-network UNCLAIMED
description: Ethernet controller
product: Ethernet Controller 10G X550T
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:03:00.0
version: 01
width: 64 bits
clock: 33MHz
capabilities: pm msi msix pciexpress cap_list
configuration: latency=0
resources: memory:a2400000-a27fffff memory:a2800000-a2803fff memory:a2b00000-a2b7ffff memory:a2b80000-a2c7ffff memory:a2c80000-a2d7ffff
*-network
description: Ethernet interface
product: Ethernet Connection (7) I219-V
vendor: Intel Corporation
physical id: 1f.6
bus info: pci@0000:00:1f.6
logical name: eno1
version: 10
serial: 04:d9:f5:1c:c9:e2
size: 1Gbit/s
capacity: 1Gbit/s
width: 32 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k duplex=full firmware=0.5-4 ip=10.0.0.79 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
resources: irq:130 memory:a4600000-a461ffff
$ ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether 04:d9:f5:1c:c9:e2 brd ff:ff:ff:ff:ff:ff
inet 10.0.0.79/24 brd 10.0.0.255 scope global dynamic noprefixroute eno1
valid_lft 601582sec preferred_lft 601582sec
inet6 2601:2c7:9000:1ca0::92d2/128 scope global dynamic noprefixroute
valid_lft 601583sec preferred_lft 601583sec
inet6 2601:2c7:9000:1ca0:2d20:d890:2e27:29a3/64 scope global temporary dynamic
valid_lft 206048sec preferred_lft 82761sec
inet6 2601:2c7:9000:1ca0:c4d2:e05c:a976:c647/64 scope global dynamic mngtmpaddr noprefixroute
valid_lft 206048sec preferred_lft 206048sec
inet6 fe80::4ad4:9dea:ae69:e89b/64 scope link noprefixroute
valid_lft forever preferred_lft forever
It seem like the network card is "unclaimed" and has no logical name. try to use modprobe but got an error.
$ modprobe ixgbe
modprobe: ERROR: could not insert 'ixgbe': Operation not permitted