Mac OS X 10.13.6 Killed my Ethernet Connection

Lownote wrote:

I downloaded and ran the Combo 10.13.6 update but Ethernet connection is still not working to the Internet. Very frustrating. I'll call Apple Support again tomorrow to see if they can help me get this fixed. Strangely, during the first Support phone section, Ethernet connection worked while we were in a Recovery mode and launched Safari. I guess that proves that the Ethernet port hardware itself is working.

Yes, and it suggests that probably some of the software running is causing a conflict.

A few things to try:

- recheck all the settings in System Preferences->Network

- login to a new user account, and check if Ethernet is working correctly there

- start in Safe Mode, login to your normal account, see if it is working

- run Etrecheck from your normal user account and post its report here

Here is the link to the combo update - which I got simply by googling "10.13.6 Combo Update"...

Download macOS High Sierra 10.13.6 Combo Update

A few things: first make sure the settings for Ethernet in System Preferences->Network are correct.

In case something went wrong with the update, you could download and run the 10.13.6 COMBO Update, as it may fix corrupted or missing files that may have resulted from the delta update.

Very strange!!

I have researched back over many posts in this forum, and came across a reference in a 2012 post under a heading of "Mac Mini crash log" to checking out whether an Xrite S/W file was upto date with the current OS.

I checked back through my old applications and found a folder relating to some old Xrite files.

With nothing to lose I deleted these files.

Lo and behold, my problems reported above, which appeared after updating to 10.13.6, have disappeared.

My system once again has very quick response, and maintains continuity on internet connection.

I can only assume that somehow these old files affected the updated OS.

If you enter "Xrite S/W" into the search box that will bring up the general list of issues associated with Xrite updates and Mac O/S.

Start with the entryRe: Mac Mini console crash log: what's it all about-Alphie? on page 1, and read on.

I just felt that somewhere along the way it was worth following this issue.

I used to have an Eye One some years ago but then Xrite didn't update the software for the model that I had but marketed a new model instead. At that point I abandoned Xrite as taking the P....!

As I was left with some old Xrite software residing in my iMac I felt that I had nothing to lose by uninstalling it.

Hey Bingo! - result

Well worth trying if you are in a similar situation

Good luck

glenfromindianapolis wrote:

I just applied this update to my macbook pro:

About the macOS High Sierra 10.13.6 Update - Apple Support

After the restart my wired internet (USB C with ethernet adapter) doesn't work at all.

What do you see in System Preferences->Network? Does it show there?

Does it have a green dot? yellow? red?

How is it set? DHCP? Manual? Post screenshots, if possible.

If it does not show in System Preferences, can you add it? Clicking the + button at the bottom left, what are your options?

Hi, I have the same problem! perform the update to 10.13.6 and this affection to the connection to enterprise Wi-Fi networks at 5 ghz, in conventional networks to 2.4 ghz wifi is connected normally. I make Ping and the network connection unstable.

You could help me!

Thank you! The Safe Mode information at least gave me the chance to get connected again, but once rebooting back into normal operating mode the symptom reappears. At least with Safe Mode I can do what must be accomplished, then shift back afterwards.

Hi. I am experiencing the exact same problem with my Imac. Have tried all the suggestions posted in this thread. So far nothing helps. I have not yet contacted Apple support. Computer is from 2018.

Any updates?

Thanks

Per

I have a very similar problem. I am using 10.13.6 (including latest updates) on a 2011 iMac.

I have the green lights showing on both my ethernet link and also my wi-fi link,....... but intermittent internet connection.

In fact every few minutes it drops for 10 minutes and then returns, repeatedly. This happens whether it is the ethernet link or the wi-fi link in use.

My iPad, which has wi-fi only, has no interruptions to the internet and enjoys continuous supply of wi-fi from the same router.

I have had my ISP provider check the line to the router, which was fine. I have changed ports on the router, no difference.

I have switched off the router, and reset, .. no difference

I have switched off and unplugged my iMac, and done a soft boot,. no difference.

I have done a full start to the iMac...no difference

I have done all of this sequentially, as advised in the forums.

I have done a full system virus check...no issues.

I've run out of ideas with my limited technical knowledge.

Any other suggestions would be very welcome.

So, if my iPad is OK on wi-fi, then it seems to point to the iMac or it's software as the problem.

I have spoken to a local Apple systems guy who says it is unlikely to be hardware, and that it points to being a software issue. It appears that if it is going to be a lengthy and costly affair to employ a someone to look at it, that I may as well look at getting a new machine.

Hi Rangefinder! Great to hear that its working for you. I tried to find the post from 2012 "Mac Mini crash log" but cannot find it. Could you please write a link and I will try the same thing? I have no Ethernet after updating to 10.13.6 on my Mac Mini

macOS Sierra: Connect to the Internet or a network using Ethernet