just switched to Linux yesterday from win10 and i am running into my first hurdle so to say. My I211 seems to be stuck at 90ish mbps even tho it is reported as having a gigabit Connection. Worked just fine on Win 10. Even over WIFI i get the full 200 mbps download.
OS is Fedora 39 Workstation, X570 master rev 1.0 and as i said Intel I211.
ethtool output:
Settings for enp6s0:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: Symmetric
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
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Speed: 1000Mb/s
Duplex: Full
Auto-negotiation: on
Port: Twisted Pair
PHYAD: 1
Transceiver: internal
MDI-X: on (auto)
netlink error: Operation not permitted
Current message level: 0x00000007 (7)
drv probe link
Link detected: yes
Yes i double checked. 90 Megabits per second over LAN and the full 200 over WLAN. I might add that my motherboard has two NICs one Intel I211 and another Realtek 2.5Gbit. Both show the same beahaviour. I already tried disabling one of them with no affect.
I know Steam might not be the best to test this, but every “speedtest” shows the same Speeds. Peaking at 90 and averaging 85 or so. And again, switching to WIFI gives full 200 mbit
Welcome to the club. Done this 3 years ago…first weeks were hard but then it just was downhill from that point onward. After two months I decided I’ll stay and never go back
No it isn’t. But If your WiFi is demonstrably faster than a 1Gbit connection in any metric, something is wrong. I221 is a good NIC. And if it works in Win10, it also isn’t a switch/router thing.
Hardware that is not working at all is easier to diagnose than sth that is working only at 10% while reporting “all fine”.
If you can do a file transfer or so over the network (other computer, server, laptop), this would help. I think recommending iperf3 is a bit much for a new user.
Tried a ubuntu lts stick, sadly with no result again. Stuck at the same 85-90 mbps
So its not Fedora. Are there any other Settings i could try to change ? I thought it maybe a driver issue but that makes no sense either as its happening to both the onboard Intel and Realtek NIC, even to an external USB one.
I am out of Ideas. On Windows i would probably uninstall everything and reinstall it. Is there something like this on Linux ?
I’d check the cable, in case it has become bad / one contact going faulty / not making good connection.
Then set the link speed from “auto” to “manual” 1gig in the network settings.
Ethtool says it auto-negotiated to gigabit, so it (obviously) should work.
then try local speed tests on the same LAN, in case something hokey is going on WAN side.
unlikely tho.
there is a chance the switch / router is only connecting to the PC at 100mb speed instead of gigabit, so while checking cable, also check another port on the switch/router, and if the port has two LED’s, check they are flashing the correct colours for gigabit?
I would check power saving settings. Don’t know much about how Fedora handles this…I searched the internet and some dude in 2021 on Stackexchange fixed his 100Mbit (showing up as 1000Mbit) by changing power settings.
Oh well its always the small things i suppose. Different cable works. Kind of weird that it worked in Windows ?? But what do i know Thanks for the help guys !
How can i mark this as solved ?
Edit : Ok now i am really dumbfounded. Plugged the old cable back in because its neatly wired up and now its working fine as well ? And yes i did unplug it before. …
Might be related to interference or just a physical cable issue that got contact after you’ve messed with it.
Could also be related to firmware shenanigans. I have this laptop that if you use it with Windows and switch to Linux you need to hard reset the controllers by holding the power button for 60 seconds otherwise ethernet, wireless and bluetooth refuse to work properly.
@Kuvl0 did you terminated the bad ethernet cable yourself? If you didn’t terminated the bad cable yourself there probably an interminit short in the cable. When ever I try and terminated my ethernet cables I end up eith the same problem you have.
Thanks for the help guys !
