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#1 2023-02-09 18:09:52

CyberCypress
Member
Registered: 2021-10-05
Posts: 5

[SOLVED] Network issues when connecting to rdp using a vpn

Hello,

I am having issues connecting to a remote machine using rdp and the remmina program.  I suspect this has something to do with my network kernel module as I do not have the same issue with a different machine that runs Pop_OS on the same network.  The connection will occasionally work, but often I have to try opening the connection multiple times in the remmina program before it successfully connects.  On the Pop_OS machine it connects on the first try.  This issue occurs when connected to wireless, or to Ethernet.  The computer I am using is a Lenovo ThinkPad T470s.

I have also noticed that when I initially boot up and connect, NetworkManager displays a message that says "your connection has limited connectivity," and it takes approximately 30-60 seconds to be able to access the internet.  This occurs regardless of if I am using wireless or ethernet.  Another thing to note is I live in a rural area with poor internet speeds, and only have a 25 MB/S DSL connection.

The kernel module that is being used for the network driver is e1000e.  The output of dmesg | grep e1000e is:

 [    8.286293] e1000e: Intel(R) PRO/1000 Network Driver
[    8.286297] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
[    8.286828] e1000e 0000:00:1f.6: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode
[    8.637274] e1000e 0000:00:1f.6 0000:00:1f.6 (uninitialized): registered PHC clock
[    8.791042] e1000e 0000:00:1f.6 eth0: (PCI Express:2.5GT/s:Width x1) 54:e1:ad:20:82:78
[    8.791087] e1000e 0000:00:1f.6 eth0: Intel(R) PRO/1000 Network Connection
[    8.791140] e1000e 0000:00:1f.6 eth0: MAC: 12, PHY: 12, PBA No: 1000FF-0FF
[    9.105103] e1000e 0000:00:1f.6 enp0s31f6: renamed from eth0

I do not know enough about this to fully understand it, but could the "Interrupt Throttling Rate" setting have something to do with this?  Any insight you may have would be greatly appreciated.

Last edited by CyberCypress (2023-02-18 18:18:48)

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#2 2023-02-10 06:43:29

-thc
Member
Registered: 2017-03-15
Posts: 531

Re: [SOLVED] Network issues when connecting to rdp using a vpn

CyberCypress wrote:
[    8.286828] e1000e 0000:00:1f.6: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode

I do not know enough about this to fully understand it, but could the "Interrupt Throttling Rate" setting have something to do with this?

As you encounter the same problem in wireless mode (different network hardware) and my machine uses the same driver (e1000e) with the same dmesg line without any problems - no, this has nothing to do with your issues.

Make sure everything on OSI levels 2 and 3 works as expected: Switch/Router, ARP, DHCP, concurrent network management.

The output of

find /etc/systemd -type l -exec test -f {} \; -print | awk -F'/' '{ printf ("%-40s | %s\n", $(NF-0), $(NF-1)) }' | sort -f

should reveal only one network management.

Last edited by -thc (2023-02-10 07:24:30)

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#3 2023-02-18 18:19:57

CyberCypress
Member
Registered: 2021-10-05
Posts: 5

Re: [SOLVED] Network issues when connecting to rdp using a vpn

Thank you for your message!  I figured out the issue through some trial and error.  It turns out that systemd-resolved.service was not running.  I enabled it with systemctl and the vpn issues have not persisted!

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