I have a dell laptop that is a dual boot system. It has Ubuntu 18.04 64 bit and windows 10. For some reason, in the last 10 days or so, the lan speed on the ubuntu system has slowed by factor of almost 10. The internet speed is fine. I booted into windows 10 and performed some tests and they were fine, so I can rule out any hardware or cabling issues. I'm not an ubuntu guru, so it is possible I messed something up.
I ran iperf3 from ubuntu partition to another machine on lan. speed averaged 22 to 45 mbits
I ran iperf from windows partition to another machine on lan speed averaged 600 mbits
Note: ubuntu and windows are on same system so using same ethernet card and same cabling
I ran ethtool and here is output
sudo ethtool eno1 Settings for eno1: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Full Supported pause frame use: No 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: No Advertised auto-negotiation: Yes Advertised FEC modes: Not reported Speed: 1000Mb/s Duplex: Full Port: Twisted Pair PHYAD: 1 Transceiver: internal Auto-negotiation: on MDI-X: on (auto) Supports Wake-on: pumbg Wake-on: g Current message level: 0x00000007 (7) drv probe link Link detected: yes
again, it was fine around 10 days ago. I know I have re-installed ffmpeg and cuda on the system, and probably messed around with the .xauthority file, but not sure if any of this is the cause.
Any suggestions?
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