Prims disappearing & reappearing since upgrade.

Prims and objects are disappearing and reappearing when in edit mode or not; when selected in edit mode and not selected, making building very difficult. At first I thought I was just ghosting, but this is not the case. Is anyone else having a similar issue?

this went away for me after removing sl then redownloading a fresh client

Thanks for your reply Mesys. I did the same. I've completely removed the viewer and reinstalled the full version and the problem actually seems to be occurring more now. Are you still without problems?

I build, a lot. I'm in the middle of something now where it is happening with large 10m x 1m x 9m prims I happen to be working with. I even disabled the culling option using Debug, (Shift-Ctrl-O as in alpha 'O'), and it still happens.

It does make building difficult. You can whip the camera around, and sometimes it comes back, sometimes...it takes a bit. This is when I'm standing in front of the prim, about 3 meters away. Proximity seems to not matter.

All the graphics options are available to me, I don't have local lights on, just sun/moon. That is about it. My drivers seem capable, since all the options are present.

So, is it just three people, or have others noticed this?

Just wondering.

I was in very briefly tonight and had some prims of a linkset vanish and come back - 10x10x(not much) walls of a cube shaped room I was standing in.

Just had that happen in a build I was standing in - it was fully rezzed, I cammed around - probably outside the build too - and when I recentered the cam on my AV, all the prims around it were gone, same with the prim attachements. It reappeared after a short while though. Didn't bug report that one yet but I'll do next time it happens.

Day two and unable to build. I am anxious about this taking weeks or longer to get fixed and am hoping someone from LL will update us on what is known about this bug and if there is possibly a fix in line.

For the record I was building all yesterday evening and night and I got this same thing quite a lot. Sometimes if you change the camera angle things come back, sometimes not. Some things stayed gone until the next re-log, some came back on their own.

Several times I also saw prims "ghost" while I was working on them in that they still showed the edit outline but the prim itself wasn't there, as if it was textured with a transparent texture (it's not).

I experimented with turning on the option to make transparent objects visible (no effect) so I must assume that it's the "culling adjustment" they are talking about making in Friday's client update.

You *can* however build.
It's a bit of an exaggeration to say one can't build under these conditions, it's just unreliable frustrating building is all.

I don't think it's an exaggeration at all when you are working on a prim and it disappears while still selected...how are you supposed to position or size it? Relog everytime? Prims are coming and going every 10 seconds at times. How many dupe prims have I got imbedded in the works? Moreover, I return this morning and prims are in positions they never were in to begin with. The way I see it, much of the work I did the day before the update will have to be gone through piece by piece to insure there are no dupes. I'm afraid to touch anything of importance until this is fixed.

I think I saw this in Amsterdam while checking out the Red Light District. Some theater seats, and then my attachments disappeared when I walked into a certain area of the room. Upon relog, I was unable to repro it--but will be looking out for more incidents.

I see what you mean. I found I was able to work okay, but then I am just used to thing disappearing and confident that they usually return. The longest I ever had any prims or prim sets disappear was about five minutes.

I found innumerable other bugs in the tools much more frustrating than the disappearing prims which pretty much returned 100% of the time for me (eventually)

Thank you for the acknowledgment Torley. I've talked with a few others who are experiencing the same thing to differing degrees. I suspect this also may be sim related as I've done some tests in other sims, including HI, and the results were seemingly inconsistent from one sim to another. Oddly enough, the sims which had the most lag were the sims where I experienced the fewest problems.

Just a note Torley, if this *is* an occlusion bug (which you seem to be implying it might be), it's a very unusual one. I had 10m wide prims disappear from the centre of view, when they were just a metre or so in front of me, while I was editing them. So if occlusion is the problem, it's removing stuff thats completely not supposed to be.

I, like you, have had prims disappear for up to 5 minutes and, in all cases, the prims have returned. The strangest part is how prims disappear in the middle of linked sets.

Unfortunately, I've not really had a chance to check out the new features much. I was not able to get into the preview grid and was already apprehensive about this upgrade due to the problems I had with the preview.

Believe it or not, I am one of the people in here who appreciates LL's constant march forward. I've read about others having severe issues following an upgrade, but I've been spared thus far. I guess it's my turn now.

I actually don't know if it was an occlusion bug--it didn't appear to be that way, but I'll need further experiences to be sure. Thanx for sharing, Dianne.

I've was experiencing the same thing editing a house this morning. Prims in link set vanish and then reappear a few moments later.

Easiest way to know if it is tied to occlusion culling. If you consistently get these errors, turn off culling. If you still have prims that disappear. It isn't from occlusion culling, if you don't... well then it probably is.

I will note that I have had prims blink off and on when turning quickly.

Other things to try:

1. Change groups when you encounter prims that disappear (especially usefull for when you see attachments and a name, bit no body for AV's) This will usually trigger the server to send an update packet to your client and the invisible AV will re-appear.

2. Check to see if your camera is somehow behind another prim, maybe a transparent prim.

I turned off Debug > Rendering > Object-Object Occlusion, assuming that is what you were talking about, but it changed nothing--prims are still disappearing. Also, I take back what I said in an earlier post about thinking this might be sim related. It's not. This evening, I encountered problems in two other sims, similar in degree. The consensus for today is that the problem seems to be getting worse as whole halves of builds are now disappearing. The prims are still there, just you cannot see them nor select them in edit mode (unless already selected), yet you cannot move through them with your avatar.

PS: Not related to groups apparently and definitely not related to camera positioning.

Interesting...

I've seen this happen 3 or 4 times now - usually when I am zipping the camera around, so last night when it bit me, I popped on the debug menu, turned OC off, the prims appeared, turned it on, the same set of prims disappeared, off, appeared, on, disappeared. It was kinda groovy making them blip in and out of existence

So - you may be seeing a different problem, but there are _definitely_ some issues with the Occlusion Octree cache taking several tens of seconds to realise that a prim is no longer occluded in some circumstances.

What bothers me about this is that typically the prim disappearing doesn't have any intervening objects, so I'm at a loss as to how it would be selected for occlusion pruning. I also have taken to turning off the occlusion feature in debug, but in my case it doesn't seem to really have any immediate effect.

I'm in the middle of a big build, and its quite important to me that the behavior stop. I guess LL knows by now, (thanks Torley!), so hopefully there will be some kind of tweak coming soon.

I've also seen the behavior as someone has mentioned, while in edit, and the prim is highlighted, that it disappears, but the highlight does not. Also, when standing on a prim that disappears, the physics engine is convinced it is still there, even if it isn't being rendered, as I do not fall to the ground below.

Any resolution to this would be deeply appreciated.

Apart from the invisible rubbish going on I find that previously made & edited prims with standard twisting, holesize & cut seem to spring back out or untwist etc. whatever they do it has to be re-edited to get them back to how they were.
And they will KEEP doing it sometimes after you fix them. Next time you target and edit POP! and they go all pearshaped.

Takes a lot longer to edit your work when you can't go into edit mode without the stupid things changing their shape on ya

so far it seems to be the torus cuts and hole resizes, haven't bothered to edit much else since it was annoying me ;p

Hello everyone.

Joe Linden just let me know this should actually be fixed in today's Second Life 1.10.34 update.

It's optional but please download it and see for yourself:

/3/37/109458/1.html

Thank you for the update Torley. I was hopeful. The problem does seem to be improved, but I am still having prims come and go. My experience after 20 minutes of building this morning seems to put me on par with what Dianne described on Wednesday, so it seems that I can now build to some degree. Yay!!!!

I've been having problems with prims vanishing, too.

I think the occlusion culling is too aggressive, and needs to take into account that if you're using the standard "follow" camera prims between the camera and the avatar are only going to be there a frame or two before the camera zooms in... so they shouldn't be counted for culling.

[edit]

Perhaps it could check if the avatar itself is in a culled region, and if so exclude the prims that were responsible for that region being culled?

I'm still having problems with this, even after the latest patch, only now, prims disappear for minutes at a time. Before it would be a "I have to look somewhere else then back and there it is", but now it's a thing where sometimes they disappear for 10 mins, but I can still collide with them even though I can't click on them or see them. sigh.

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