[SOLVED] network card does not work at 1Gbps

m3nhir · 2022-03-16 22:14:59

Hi,
I have a 1 Gbps FTTH connection, but I can't set the network card to 1Gbps.
The speed is set to "Speed: 100Mb / s".

 lshw -C network
  *-network                 
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: enp3s0
       version: 15
       serial: 24:4b:fe:56:8e:9a
       size: 100Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8168 driverversion=8.049.02-NAPI duplex=full firmware=rtl8168h-2_0.0.2 02/26/15 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
       resources: irq:104 ioport:e000(size=256) memory:fcc04000-fcc04fff memory:fcc00000-fcc03fff

The "ethtool enp3s0" command returns me

 ethtool enp3s0
Settings for enp3s0:
        Supported ports: [ TP ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                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/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
        Auto-negotiation: on
        Port: Twisted Pair
        PHYAD: 0
        Transceiver: internal
        MDI-X: Unknown
        Supports Wake-on: pumbg
        Wake-on: g
        Current message level: 0x00000033 (51)
                               drv probe ifdown ifup
        Link detected: yes

If I give the command

 
ethtool -s enp3s0 speed 1000 duplex full autoneg on

the network disconnects and after a while it returns to the settings of 100 / Mb / s
this is the output immediately after the command and before the 100Mb / s configuration is reset:

 
ethtool enp3s0
Settings for enp3s0:
        Supported ports: [ TP ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Full
        Supported pause frame use: Symmetric Receive-only
        Supports auto-negotiation: Yes
        Supported FEC modes: Not reported
        Advertised link modes:  1000baseT/Full
        Advertised pause frame use: No
        Advertised auto-negotiation: Yes
        Advertised FEC modes: Not reported
        Speed: Unknown!
        Duplex: Unknown! (255)
        Auto-negotiation: on
        Port: Twisted Pair
        PHYAD: 0
        Transceiver: internal
        MDI-X: Unknown
        Supports Wake-on: pumbg
        Wake-on: g
        Current message level: 0x00000033 (51)
                               drv probe ifdown ifup
        Link detected: no

I don't know how to fix it. How can I set up the card?
Thanks for your help

Last edited by m3nhir (2022-03-17 22:10:02)

Zod · 2022-03-16 22:39:25

The nic, the switch port and the network cable between the nic and the switch port all need to support 1Gbps.

As far as the cable is concerned it needs to be at least cat 5e.

seth · 2022-03-17 06:44:06

Specifically

Link partner advertised link modes:  10baseT/Half 10baseT/Full
                                             100baseT/Half 100baseT/Full

m3nhir · 2022-03-17 21:09:43

Zod wrote:

The nic, the switch port and the network cable between the nic and the switch port all need to support 1Gbps.
As far as the cable is concerned it needs to be at least cat 5e.

The modem, and the network card supports 1Gbps, there are no switches but direct connection to pc > modem. The cables are cat 5e.

m3nhir · 2022-03-17 21:13:14

seth wrote:

Specifically

Link partner advertised link modes:  10baseT/Half 10baseT/Full
                                             100baseT/Half 100baseT/Full

Could this be a problem with the network card ?. What if I used another network card?

Tarqi · 2022-03-17 21:38:29

m3nhir wrote:

[...] there are no switches but direct connection to pc > modem. [...]

ethtool wrote:

MDI-X: Unknown

Try a crossover cable.

Edit:

m3nhir wrote:

ethtool -s enp3s0 speed 1000 duplex full autoneg on
[...] after a while it returns to the settings of 100 / Mb / s [...]

If you manually set the speed, also turn off autonegotation. However, I don't think that this will help.

Last edited by Tarqi (2022-03-17 21:52:27)

m3nhir · 2022-03-17 22:08:34

Thank you for your suggestion. I connected the pc to a switch and now the network card is set to "Speed: 1000Mb / s". I did a speedtest and everything works!

Arch Linux

#1 2022-03-16 22:14:59

[SOLVED] network card does not work at 1Gbps

#2 2022-03-16 22:39:25

Re: [SOLVED] network card does not work at 1Gbps

#3 2022-03-17 06:44:06

Re: [SOLVED] network card does not work at 1Gbps

#4 2022-03-17 21:09:43

Re: [SOLVED] network card does not work at 1Gbps

#5 2022-03-17 21:13:14

Re: [SOLVED] network card does not work at 1Gbps

#6 2022-03-17 21:38:29

Re: [SOLVED] network card does not work at 1Gbps

#7 2022-03-17 22:08:34

Re: [SOLVED] network card does not work at 1Gbps

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