Onboard LAN slow response.

[AnalogBill]

Symptom 1: After booting NUC from shut down condition, I access it using VNC. Response time from the NUC (asking for password) is noticeably slower than from any of my much older/slower/obsolete machines.. Symptom 2: Log shows  failure to mount a NFS drive due to the LAN not being ready.

New NUCi5BEH, m.2 nvme SSD, 16GB ram.

Lan response performance compared to, and much worse than two other computers with lower specs, running the identical software.

HP 6300 Core Duo, 2GB ram,

Lenovo m92p, old i5 with 8 GB ram.

Any ideas?

[Wanner_G_Intel]

Hello AnalogBill,

Thank you for submitting your question on this Intel® Community.

We would like to obtain more information about your system configuration. Please generate a system report with the Intel® System Support Utility (Intel® SSU) on your Intel® NUC and attach it to this thread.

1. Intel® SSU Download link
2. Open the application and click on "Scan" to see the system and device information. By default, Intel® SSU will take you to the "Summary View".
3. Click on the menu where it says "Summary" to change to "Detailed View".
4. To save your scan, click on "Next", then "Save".

Wanner G.

Intel Customer Support Technician

A Contingent Worker at Intel

[AnalogBill]

Hello WannerG, My initial installation was in Legacy bios mode, so I decided to wipe the boot SSD and switch to UEFI boot. That was my mistake to install in legacy boot mode, but I'm an old guy, so I go with what I know. Now I know better. I will start configuring my machine today, including the two issues noted previously: failure to autostart x11vnc server at boot, and failure to mount an NFS share at boot. I will use the SSU when I've donfigured the machine completley. Thanks...Bill _____

[Wanner_G_Intel]

Hello AnalogBill,

Thank you for the update.

As soon as you can, please let us know the outcome of these troubleshooting steps.

Wanner G.

Intel Customer Support Technician

[AnalogBill]

I completely wiped the SSDs in my NUC and my Lenovo m92p test machine. Reinstalled OS, configured vnc servers and NFS mount points in both. The two machines are configured identically now, other than the hardware/firmware.

I've attached the scan file from the NUC for your review.

I'm going to run the SSU scan on my test machine next, and look for differences.

Since switching the NUC to UEFI boot, the problem of NFS mount failure is resolved, and the problem of slow response to my vnc client, is improved, however, the test machine continues to respond to the vnc client much faster.

Wondering if the NUC firmware has a network power saving mode that I need to change....haven't found anything yet.

[Wanner_G_Intel]

Hello AnalogBill,

Thank you for your response.

• It seems that you are running Ubuntu 18.04.4 LTS. Are all of your devices running this OS?
• We would like to get more information about your network. Try running the ifconfig / ip add show or a similar command that allows us to check your network configuration (picture).
• Run a simple ping command and attach the results (picture).
• Could you please let us know the version of VNC that you are using?
• Is the NFS drive set to auto log-on on when you start the system?

Wanner G.

Intel Customer Support Technician

[Wanner_G_Intel]

Hello AnalogBill,

If you need further assistance, please let us know. We will be glad to assist you.

Wanner G.

Intel Customer Support Technician

A Contingent Worker at Intel

[Wanner_G_Intel]

Hello AnalogBill,

We have not heard back from you, so we will close this inquiry. If you need further assistance, please post a new question.

Wanner G.

Intel Customer Support Technician

A Contingent Worker at Intel

[AnalogBill]

Wanner, Sorry for the delay. Attached ifconfig and ping results...nothing unusual. Attached relevant part of last boot log...interesting part is around timestamp 08:52:57, regarding failed NFS mount of my DS1515 server. If you do a "find DS1515" on the file, you will see what I think is relevant, but way over my head to understand. I'm going to check the boot log in my Lenovo test machine also. To be clear....the Lenovo and the NUC are identical in software configuration, which is why I think there must be something in the bios I need to change. Bill _____

[Wanner_G_Intel]

Hello AnalogBill,

Thank you for your response.

It seems that the files were not attached to the thread. Try to use the clipboard icon when writing your answer to attach the files.

Also, could you please include the the version of VNC that you are using?

Is the NFS drive set to auto log-on on when you start the system?

Wanner G.

Intel Customer Support Technician

[AnalogBill]

Ubuntu uses the x11vnc-server, and I have had no more VNC problems since I switched the NUC to UEFI boot,. I generally use a RealVNC client from a Windows 10 Pro box. and sometimes use an UltraVNC client on a Windows 10 pro laptop. Anyway, VNC is no longer a problem.

When Ubuntu boots up, it automatically mounts any drives. In my NUC I have the m.2 nvme SSD as a boot drive, and a Seagate 2.5" drive for data. Since the Seagate is internal, it mounts immediately. The problem is my NAS automount fails, and as I read the syslog, it appears that the NUC's nic is changing state while the NAS is trying to mount, causing it to fail. As soon as the NUC has booted into my OS, I can manually mount the NAS instantly. In the logfile, my NAS is identified as "DS1515".Several lines in the syslog, before and after the DS1515 mount failure, indicate to me that the network is unavailable when the mount is trying to happen.

I'm going to try the attachments again.

[AnalogBill]

ifconfig & ping data attached

[Wanner_G_Intel]

Hello AnalogBill,

Thank you for the update. 

We will look into this issue and try to provide an update as soon as possible. 

Wanner G.

Intel Customer Support Technician

[Ronny_G_Intel]

Hi AnalogBill,

I work with Wanner and we have been chatting about this case, we both believe that the NFS not automounting at boot is not related to any misconfiguration in BIOS or setup related to the LAN controller.

We think this is more of an Ubuntu* configuration issue and we found the documentation that addresses it, please see the following URL: https://help.ubuntu.com/community/Autofs

I would also recommend that you reach out to Ubuntu forums if you have questions since we provide very limited support for Linux* configuration related questions.

I hope this helps.

Regards,

Ronny G

[AnalogBill]

Thanks, Ronny I'll test the Autofs solution today. Certainly looks like it will solve the problem. Let's close my question/case as Solved. Thanks to you and Wanner for your help. Bill _____