Thursday, December 27, 2018

Realtek RTL8111/8168/8411 slow transfer speed

scp works like this normally:
[penguin@alpha ~]$ scp linuxmint-19.1-mate-64bit.iso m715q3:/home/penguin/
penguin@m715q3's password:
linuxmint-19.1-mate-64bit.iso                                     100% 1936MB 110.8MB/s   00:17   
 

scp works something like this unexpectedly:
[penguin@alpha ~]$ scp linuxmint-19.1-mate-64bit.iso m715q3:/home/penguin/
linuxmint-19.1-mate-64bit.iso                                       0% 2832KB 390.4KB/s 1:24:30 ETA^


Fix:
Reboot the PC and go into the BIOS Setup
Disable the onboard Ethernet controller
Save and Exit from the BIOS Setup, during POST, turn off the PC
Power on the PC and enable the onboard Ethernet controller
Save and Exit from the BIOS, boot the OS

Rebuild OS does not fix this issue, for some reasons the Realtek onboard Ethernet has this issue occassionally, it happens on two of our Lenovo ThinkCenter M715Q Tiny.