Displaylink ceases to work in 10.13.4

[toastido]

Originally Posted by RGloverii

While we are all currently impacted by this issue, I think it’s important to note that we have caused this issue ourselves by installing an Apple BETA product on presumably PRODUCTION machines. That is a risk, and we are now suffering the result of that risk.

While I can appreciate what you are saying, nobody is blaming DisplayLink for the issue. We're just pushing to get it fixed. (Besides, if apple were to release 10.13.4 to the public today, it'd still be broken.)

Originally Posted by RGloverii

I can not fault DisplayLink for not providing a fix yet. That is the point of developer betas. To flesh out incompatibilities and resolve before general release of the update.

Again, we're just anxious to get the fix. I have even offered to test a "beta" fix to see if it works outside of a lab environment for them.

Another thing to note, is that most developers (like myself) keep up to date with developer/public betas so we can do just that, flesh out incompatibilities and resolve before GA. That is why we would have installed it on "production" machines.

Not blaming anyone, or even getting mad; Just requesting updates to this issue.

[RGloverii]

I think that DisplayLink tends to be more open and communicative regarding issues and status than most established vendors. And I appreciate that.

Yes, this incompatibility is inconvenient to all of us on this thread. And it goes without saying that we would like to see a fix ASAP. I simply don’t see any need to further impress upon DisplayLink that we want a fix. They are well aware of the need for a fix. Not only for us on this thread, but for ALL consumers of their products.

As for potential DisplayLink beta releases: This is something they already do. They are made public when available for testing.

I hope I don’t come across as being rude. That’s not my intent. I’m just providing my thoughts as someone who has utilized their products both personally and professionally for a long time.

[dizash]

Originally Posted by RGloverii

I think that DisplayLink tends to be more open and communicative regarding issues and status than most established vendors. And I appreciate that.

Yes, this incompatibility is inconvenient to all of us on this thread. And it goes without saying that we would like to see a fix ASAP. I simply don’t see any need to further impress upon DisplayLink that we want a fix. They are well aware of the need for a fix. Not only for us on this thread, but for ALL consumers of their products.

As for potential DisplayLink beta releases: This is something they already do. They are made public when available for testing.

I hope I don’t come across as being rude. That’s not my intent. I’m just providing my thoughts as someone who has utilized their products both personally and professionally for a long time.

I too appreciate the transparency from DL. It's a rare thing and much appreciated. Since this thread seems to have received the most participation in users sharing their configs/settings and more importantly, an update from Carlo when they discovered the one or two likely causes for the issue that's universal.

Anyway, besides giving this thread a bump, I noticed that if I selectmirror displays in system prefs (something I was prepared to cause a freeze or crash), the display attached to a DL to USB 3, went from lime green, to actually displaying what appears to be my login screen. I can only guess because the system prefs/ displays for that particular display is in the middle of the screen hiding the 3 accounts displayed on my login screen. Unfortunately, that's the only time I see anything different and requires a hard restart (holding down the power button). I'm also confirming that taking a screen shot of the diplay by dragging my trackpad pointer to that display (and using the cmd+shift+3 screenshot method), leaves you with a screen shot of your display how it should be displaying. It'definitely strange as it's like the lime green screen seems like a privacy measure - even though I know that's not what it is- I ony say that knowing that underneath the green, the display functions. More specifically, I'm able to drag things over there as well as blindly get them back .

Again the work by DL finding the likely issues and letting us know really is appreciated. Solid move and it's forr that reason and access to betas in the past which is why i haven't considered any other multi-screen solution. Thanks.

[Carlo]

Hi All,

Update from us about this issue.

No solution yet. We are running a quite large number of experiments and still trying to get more info out of Apple.
I cannot share much, however we are aware of a few cases where the "yellow screen" issue can occasionally show pixels. This is one line of enquiry so if this happens to you, please let us know in which conditions.

As you can imagine this issue is higher than highest priority for us. Thank you for your comments and the useful information posted so far. Don't stop!

We have raised the 10.13.4 issue with Apple, it's ID 37385102.
We invite everyone to raise this problem with Apple. The bigger your deployment the better. Please let us know if the support team close as duplicate of an internal issue and let us know which is the internal issue.

Kind regards
Carlo

[slvrscoobie]

Originally Posted by Carlo

Hi All,

Update from us about this issue.

No solution yet. We are running a quite large number of experiments and still trying to get more info out of Apple.
I cannot share much, however we are aware of a few cases where the "yellow screen" issue can occasionally show pixels. This is one line of enquiry so if this happens to you, please let us know in which conditions.

As you can imagine this issue is higher than highest priority for us. Thank you for your comments and the useful information posted so far. Don't stop!

We have raised the 10.13.4 issue with Apple, it's ID 37385102.
We invite everyone to raise this problem with Apple. The bigger your deployment the better. Please let us know if the support team close as duplicate of an internal issue and let us know which is the internal issue.

Kind regards
Carlo

I can occasionally see the desktop 'behind the yellow' on my 13" mbp mid2012. however, its usually when swiping between desktops on the main screen it blinks for a moment. however it isnt consistent. another user happy to alpha test drivers if it can help

[toastido]

Interestingly, it seems like the eGPU stuff is causing all sorts of issues all around. Very similar issues were reported using eGPUs and High Sierra: https://forums.developer.apple.com/m.../264366#264366

The most interesting part (to me), is that where I noticed it thinks the external display is using the internal video card in the profiler, and in that thread, the same -- the external GPU seems to also be reported to be using the internal card(s).

Mind you, that thread is from late last year, but based upon Apple's docs, built-in eGPU support would be being added in to high sierra during this cycle.

I may be way off track, but it's an interesting coincidence if not related.

[toastido]

Another thing of note: I saw my full desktop momentarily immediately after login. It flashed up for a full second or so. I found this line interesting in the system log during that time:

Feb 19 12:02:24 clarity DisplayLinkUserAgent[263]: BUG in libdispatch client: kevent[EVFILT_MACHPORT] add: "No such file or directory" - 0x2


Also these:

Feb 19 12:02:34 clarity com.apple.xpc.launchd[1] (com.displaylink.useragent): This service is defined to be constantly running and is inherently inefficient.
Feb 19 12:02:34 clarity com.apple.xpc.launchd[1] (com.displaylink.useragent): Please switch away from OnDemand to KeepAlive.

Here's a link to see the full boot/login process if it helps: https://www.dropbox.com/s/2vc9z507fc...otlog.rtf?dl=0

[toastido]

Also I noticed if I kill -HUP the pid of DisplayLinkUserAgent, my desktop on that monitor flashes up for a second before the yellow takes over again.