Realtek driver r8169 slow network speed

[maslobojik]

Hi,
Now I use kubuntu 18.04 and used ubuntu 16.04 before, the same problem.
On linux the speed is 10Mb/s but on Windows 7 (dual boot) the speed of the link is 100Mb/s.
I read a couple of posts about my network interface issues with slow speed, nothing to help.
Info :

[COLOR=#222222][FONT=monospace][COLOR=#000000]sudo lshw -C network         [/COLOR]
 *-network                  
      description: Ethernet interface
      product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
      vendor: Realtek Semiconductor Co., Ltd.
      physical id: 0
      bus info: pci@0000:05:00.0
      logical name: enp5s0
      version: 06
      serial: 4c:cc:6a:61:bf:a8
      size: 100Mbit/s
      capacity: 1Gbit/s
      width: 64 bits
      clock: 33MHz
      capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
      configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168e-3_0.0.4 03/27/12 ip=192.168.21.46 latency=0 link=yes mul
ticast=yes port=MII speed=100Mbit/s
      resources: irq:16 ioport:d000(size=256) memory:fe704000-fe704fff memory:fe700000-fe703fff

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[COLOR=#222222][FONT=monospace][COLOR=#000000]lsmod | grep r81[/COLOR]
[COLOR=#FF5454][B]r81[/B][/COLOR][COLOR=#000000]69                  86016  0[/COLOR]
mii        [/FONT][/COLOR][COLOR=#222222][FONT=Verdana] [/FONT][/COLOR][COLOR=#222222][FONT=monospace]           16384  1 [COLOR=#FF5454][B]r81[/B][/COLOR][COLOR=#000000]69[/COLOR]
[/FONT][/COLOR][COLOR=#222222][FONT=Verdana][/FONT][/COLOR]

[COLOR=#222222][FONT=monospace][COLOR=#000000]sudo ethtool enp5s0[/COLOR]
Settings for enp5s0:
       Supported ports: [ TP MII ]
       Supported link modes:   10baseT/Half 10baseT/Full  
                               100baseT/Half 100baseT/Full  
                               1000baseT/Half 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/Half 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                                                                                                                          
       Link partner advertised auto-negotiation: Yes                                                                                                                               
       Link partner advertised FEC modes: Not reported                                                                                                                             
       Speed: 100Mb/s                                                                                                                                                              
       Duplex: Full                                                                                                                                                                
       Port: MII                                                                                                                                                                   
       PHYAD: 0                                                                                                                                                                    
       Transceiver: internal                                                                                                                                                       
       Auto-negotiation: on                                                                                                                                                        
       Supports Wake-on: pumbg                                                                                                                                                     
       Wake-on: g                                                                                                                                                                  
       Current message level: 0x00000033 (51)                                                                                                                                      
                              drv probe ifdown ifup                                                                                                                                
       Link detected: yes

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[shag00]

I have a similar problem, for me it's 100MB on windows and 20MB on Kubuntu. See my post
https://www.kubuntuforums.net/showth...fer-speed-slow

[Thomas00]

I am in the same boat with a wifi driver. How about booting a disti with more recent kernel and drivers to see if this is maybe already fixed somewhere else? Didn't work for me but maybe it helps you. Don't bother with the Kubuntu 19.04 beta, that kernel is the same or older than what you got.I used Manjaro.

[shag00]

I have a suspicion it's a Dolphin problem. My disk to disk transfers, within the same box are also significantly slower than expected at around 40mb/s. I have another Ubuntu machine that does not have this issue which has the same kernel as Kubuntu..

[shag00]

I did further investigation into this by doing comparisons between Dolphin, Konqueror and Nautilus from my PC. In general terms Konqueror was twice as fast while Nautilus was up to 5 times faster, ie it would transfer at the expected 100 MiB/s. If you are interested I opened a bug https://bugs.kde.org/show_bug.cgi?id=402276