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Issue Details (XML | Word | Printable)

Key: SVC-162
Type: Bug Bug
Status: Closed Closed
Resolution: Cannot Reproduce
Priority: Major Major
Assignee: Unassigned
Reporter: Jayden Beresford
Votes: 75
Watchers: 1
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2. Second Life Service - SVC

"Double teleport screen" bug freezes your avatar and requires viewer restart

Created: 02/May/07 03:54 AM   Updated: 17/Apr/08 03:57 AM
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Component/s: Teleport
Affects Version/s: 1.17.0, 1.18.0, 1.18.3
Fix Version/s: None

Environment: Mac OS X 1.15, Windows XP
Issue Links:
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Relates

Linden Lab Issue ID: SL-29237


 Description  « Hide
[2007-07-11] SEE TORLEY LINDEN'S COMMENT @ https://jira.secondlife.com/browse/SVC-162#action_20015 BELOW – part of the problem described here is a separate issue not dependent on the "double teleport" screen, which has been resolved internally and awaits public release as of this writing.

========-

When teleporting, rarely (three or 4 times a day only) after you arrive at the destination another teleport is system initiated. This happens 0.25 seconds or less after arriving, you briefly see the destination before hearing the woosh and seeing black again.

The system initiated teleport never arrives. If you leave it for a long time you are kicked out of second life, if you try to quit you are kicked out.

Attempting to log in again always throws up a true 5 minute to the second login delay from the first attempt.

Between the time you enter the system forced teleport and your login attempt you remain visible in the sim.

Unable to offer a reproduction at this time, it just happens.

((BTW Lindens... Jira only has V1.13.4 or Unknown in the Affects Version Field))



 All   Comments   Change History      Sort Order: Ascending order - Click to sort in descending order
Lex Neva added a comment - 02/May/07 08:34 AM
This happens to me, but much less often. Note to skeptics: this is NOT caused by teleporting to a location with a security system that immediately teleports you home.

Dzonatas Sol added a comment - 02/May/07 11:30 AM
Linked for the re-login delay after crash, which may be a presence issue.

Dzonatas Sol added a comment - 02/May/07 12:24 PM
Linked to VWR-315 because it appears there are duplicate packets seen randomly.

Buckaroo Mu added a comment - 04/May/07 11:12 AM
Additional Details: If you cancel the system-initiated TP, you are not always logged out - however, you are always Frozen, as if disconnected from the sim you are in - cannot move, interact with objects around you, chat, etc. You can move your camera around, but that is client-side.

Lee Ponzu added a comment - 05/May/07 08:17 AM
Me three.

WorkingOnIt Linden added a comment - 14/May/07 09:50 AM
The "double teleport screen" one! This has been around awhile, linking internally.

Also – has anyone else noticed that sometimes, after being in a location for a longer time (say, 15 minutes), the black teleport screen will suddenly come up, the progress bar will move slowly, and then if you wait awhile, it'll go away? I've seen this several times.


WorkingOnIt Linden added a comment - 14/May/07 09:53 AM
BTW, there are times when I've just "let it be" when I get the second teleport screen, and the progress bar moves slowly, then I see the world again and I'm able to proceed without relogging. Trying to cancel the teleport prematurely has, in my experience, led to my avatar not being able to navigate with the movement keys. However, I can still right-click and sit on objects. Sounds familiar to anyone else?

Tofu Linden added a comment - 14/May/07 10:33 AM
That does sound familiar, WorkingOnIt.
A few of us have looked at this internally, but it's frustratingly hard to reproduce - anyone wanting to help see this fixed may wish to try to come up with a recipe for making this happen at will (or vastly increasing the probability). Thanks!

Daedalus Young added a comment - 30/May/07 09:26 AM
I noticed something similar the other day, which was quite scary. It seemed to act just like the double teleport, but this time for me it was a double login.
SL crashed on me, then I logged back in, only to be logged out a few seconds later with the message "logged out because you are trying to log in from another location". I initially thought it to be a hacking attempt, so I changed my password, but because it happened so close to an actual login, I figured it could well be a (rare) bug.
It could be a bug in the sim, when an avatar arrives, but not all 'avatar is present in sim' packets are received by the sim or agent or so, resulting in a 2nd attempt to tp (or log in, in my case). Note this is a wild guess in the dark.

Torley Linden added a comment - 01/Jun/07 09:08 AM
From SVC-238, Haravikk Mistral writes:
========-
Mac OS X.4.8

I can't solidly reproduce this at all so I'm posting in the hopes someone else may have a better idea of what's going on with this one.

Basically, on occassion I might teleport somewhere, and after arriving, SL will try to teleport me AGAIN. The "Requesting teleport" bar comes up but does nothing, it moves along but nothing happens.
Clicking cancel leaves you at the location you wanted to teleport to, but you are left unable to move or teleport. You can sit on anything with a sit-target, but when you stand up you still can't move.

This therefore requires re-logging to fix, as even getting someone to offer you a TP won't always work (it just does nothing as with the 'extra' teleport).

I think this may be a client issue, but I have no idea, and this category has a specific 'Teleport' heading.

I thought originally it was because of laggy sims, but it's happened all over the place, even in my home sim which is typically very good.
========-


Torley Linden added a comment - 01/Jun/07 09:09 AM
Today, at my office hour, I was sitting down when I saw a spontaneous teleport screen come up with no apparent reason. It didn't have a cancel button, and the progress bar crawled, but after a minute or so, it disappeared, and I noticed I was standing inworld and able to move.

It's perhaps worth noting that I had teleported previously during the session.


Veronica Quackenbush added a comment - 03/Jun/07 11:40 AM
Re SVC-162, a few additional observations that I hope might help narrow down the issue and lead to a feasible repro:

1. I did not see anyone mention above that this issue affects the Windows OS as well, so for the record: it does

CPU: Intel Pentium Pro (Unknown model) (1398 MHz)
Memory: 1024 MB
OS Version: Microsoft Windows XP Service Pack 2 (Build 2600)
Graphics Card Vendor: ATI Technologies Inc.
Graphics Card: FireMV 2400 PCI DDR x86/SSE2
OpenGL Version: 1.3.5014 WinXP Release
LLMozLib Version: 1.1.0 (Mozilla GRE:1.8.0.10_0000000000)

2. For nearly a month in the course of most 1.15.XX versions of the viewer, this bug occurred much more rarely than it did in earlier versions (frequency about 4 times a day since 1.12, dropped to less than 3 times a week during 1.15, now back up to about once a day in 1.16). This suggests that one of the factors affecting it may have been reintroduced or is relied on more often in 1.16

3. I can confirm that any attempt to cancel the unsolicited TP will leave one in world but with all movement controls locked out, necessitating a relog. If one does NOT cancel the freak TP but tries to sit it out, the outcome seems to depend in part on memory load: with a fairly low memory load, the TP will sometimes time out and leave one in world. With a high memory load, the viewer eventually crashes.

4. On one or two occasions where a friend was already present at the destination, I have been fortunate enough to have that friend observe chat I typed while the screen was blacked out by the freak TP. That is, I was not able to read my own chat, but my friend was able to read it. I have since found this useful to communicate the failure to other people present at the destination. As yet I have not been fortunate enough to have a friend observe whether actions other than chat are likewise possible while the screen is blacked out. For the record, on the occasions where I chatted during the freak TP, I ended up frozen but in world; this suggests that chatting during the event may have a similar outcome as canceling the TP, perhaps for the same reason?

5. Related to the previous point, my personal impression (although I did not start keeping precise statistics until this bug had been happening for some time) is that the freak TP happens most often as a consequence of accepting a TP invite (hence the frequent presence of a friend at the destination, as alluded to above). On the rare occasions (about 20%) that a freak TP happened when I was NOT accepting a TP invite, it always happened when I tried to TP from the world map. In other words, in my personal experience (since I started keeping track) no freak TP has ever happened when I used a landmark to TP from. Maybe someone can think of a feature that TPs from friend invites and the world map have in common, but TP from LMs does not, that might be helpful to narrow the problem down? (Of course, if other folks have the same problem TPing from LMs, this would be a false clue, so comments would be appreciated


conveyician morigi added a comment - 03/Jun/07 06:17 PM
This is not only related to mac, it happens on a regular basis with me in win2k. I can reproduce it. It always happens after I teleport home. I can use all the menu items, as well as interact in IM or chat, also can build, but not move my AV. When I build, if I decide to relog because I need to move closer to my work, I find that all the building changes I did while frozen are gone, as if I never changed anything. I notice the Network traffic indicators drop to just about nothing, and I show a 0.0% packet loss. I wish I knew what things to record to help the techs find a fix, but ima still noobin it. Torley, ur kool!

Timo Gufler added a comment - 04/Jun/07 11:01 PM
Just like to add that Linux client also suffers from this bug.

Argent Stonecutter added a comment - 07/Jun/07 10:15 AM
Happens with Windows and Mac for me, but rarely.

conveyician morigi added a comment - 09/Jun/07 08:13 AM
So, how many votes before it gets fixed? Still occurs every day with me, I can reproduce it anytime I want to. If I knew what data to gather, and how, I would provide it. This issue is getting dated, but the problem is still fresh. hmmmm, Makes me think of Fresh watermelon....

Fledhyris Proudhon added a comment - 21/Jun/07 07:25 AM
This has happened to me before, not often enough to be anything more than a quirky annoyance - I am on a 1.73GHz Pentium laptop, Win XP, GeForce Go 6400.

I have experienced this bug both when being teleported by friends, AND when using the 'World' -> 'Teleport Home' shortcut.

This has not happened to me in quite some time, but today (21 June '07, approx 7am PDT, on tp invite to Pyong Ya sim) it happened again - for the first time I tried using the cancel button in the bottom right corner of the screen, I don't recall seeing this before but that could just be my phenomenal lack of observational powers

Anyway the tp cancelled but I then was unable to move; could sit on objects, even stand on a posestand, but could also not use the stand up button to get off. I relogged and this fixed the problem. Am reproducing my observations here, although they report nothing new, because of the date/time of the bug which is after the latest update.


Torley Linden added a comment - 11/Jul/07 08:23 AM
I just wanted to share the good news that the overlap of "You get stuck for several minutes when relogging" issue, whether or not you get a "double teleport" screen, is fixed internally – SL-29153: Login fails because system is logging you out. Watch for that in a public release coming soon.

As for this particular SVC-162, it's a pain, but difficult to repro. So the votes help draw attention to it, but we really need a reliable way to make this happen, over and over. Comment here if you know how.


Torley Linden added a comment - 13/Jul/07 09:57 AM
Retitled to reflect actual scope of issue.

Angel Fluffy added a comment - 23/Jul/07 10:53 PM
This has been happening to me a lot today.
It is VERY annoying.
The only thing that seems to help is waiting awhile in between each teleport. Even then, I sometimes get this (

Rascal Ratelle added a comment - 29/Jul/07 09:38 PM
Torley as I mentioned before els where in Jira SL, there are just some bugs that can nOT be reproduced. this bug is one of them. if no one has reproduced this bug it's because it's unreporducable.

Once again, it is my belief based on my experience in SL that this and many other unreproducable bugs is the result of a problem with how the viewer, be it mac. linux or windows, handles the data, and communicates with the systems servers.

As I mentioned, before the SL client is a CPU hog and a lag monsters.

there is often more data being received processed and temp stored in graphics cards memories and Rams then the memories can handle.

if you want ti find and fix this and many other unreproducable bugs, then I suggest you look at the clients, their coding and how they communicate with the sims servers and asset servers.

What has become obvious to me is that the client is some how automaticaly sending unauthorized teleport requests seconds after you tp in or suddenly with out notice.

Now I have noticed intermittent packet loss still occuring on SL not serios but noticable and the lag that results. Is it posible Torley that a data packet or two was dropped during teleport the seconds after teleport, picked up or retrieved or resent cuasing double teleport or teleport at a later time
I say this becuase I noticed thru my own investegations that the client sometimes resends a lost or dropped data packet.


Fluf Fredriksson added a comment - 03/Aug/07 06:27 AM
Have had this happen twice already today.
First time I hit cancel and was rewarded with the glued to the ground bug.
Second time I just left it alone while I hunted for this JIRA entry. It seems to have landed me where I wanted to be with the first teleport, and I can move, but it took ages!
Any clues on what initiates the 2nd teleport???
I have no idea how to reproduce this, only that some days it happens more often than others.

Furia Freeloader added a comment - 07/Aug/07 04:06 PM
This bug is still very much taking place, and if you click cancel, leaves you glued and unable to teleport. I have had some success with letting the teleport bar fill, but yes it takes forever to resolve.

Flezix Maddux added a comment - 17/Aug/07 11:24 AM
This is not just a mac problem!

Flezix Maddux added a comment - 17/Aug/07 11:26 AM
It seems teleporting in the same sim has increased chances of producing the double screen

Argent Stonecutter added a comment - 20/Aug/07 10:19 AM
I've had this happen when I've only teleported once in the session. And I get the long delay before I can log in again.

If this has been fixed internally, when will that fix be released?


Torley Linden added a comment - 27/Aug/07 10:40 AM
@Argent: The related VWR-1664 will be changed to "Fixed" (as in, fixed publicly) when it's released. I don't know which release it'll be in yet.

Torley Linden added a comment - 27/Aug/07 10:43 AM
Also, the overlap I referred to earlier with SL-29153/SVC-437 – that issue's been reopened because it's again a problem. (It happens to me each and every time after I relog on Torley Linden, argh). Needs to be re-fixed.

lum pfohl added a comment - 27/Aug/07 01:24 PM
I am using Windows XP, SP2.

This issue has occurred in every SL Client version including the one described below - about 10 minutes ago. While the issue occurred today in Help Island Public, it is not relegated to this locale. It might be lag-related (since help island is laggy), but I recall it would happen almost anywhere, whether there was lag or not.

Second Life 1.18.1 (2) Aug 1 2007 09:51:10 (Second Life Release)

You are at 262014.9, 257909.8, 26.3 in Help Island Public located at sim4109.agni.lindenlab.com (63.210.157.13:12035)

CPU: Intel Pentium 4 Willamette (1794 MHz)
Memory: 1279 MB
OS Version: Microsoft Windows XP Service Pack 2 (Build 2600)
Graphics Card Vendor: NVIDIA Corporation
Graphics Card: GeForce FX 5500/AGP/SSE2
OpenGL Version: 2.0.3
LLMozLib Version: 1.1.0 (Mozilla GRE:1.8.0.12_0000000000)
Packets Lost: 157/39721 (0.4%)
Viewer Digest: 488b2304-0456-c259-1433-ce30dbb49c28


Deira Llanfair added a comment - 29/Aug/07 11:27 PM
This is a persistent problem - I am astonished that it has not been assigned to anyone yet. The double teleport happens seemingly randomly and you cannot get out of it other than by logging off and back on. If you "cancel" (assuming you get the option button) you are left frozen, and inopperable.

Spank Lovell added a comment - 30/Aug/07 04:36 AM
Just for information guys my G/F had this problem almost everyday on a regular basis until she made her cable company replace the cable modem. Ever since then shes had only a few double TP's.

So that definately points to network issues, specifically the arrival of packets to the client and how the viewer copes with latency of data.

For this reason I can see how dificult this will be to reproduce "in the wild" without resorting to a test rig of some description that can allow a client to be subjected to "data distortion" (for want of a better name!)

I've only seen this problem myself a few times, and now I wonder if its because my cable supplier was having issues down stream?


tary allen added a comment - 05/Sep/07 11:24 AM

This is happening a lot to me lately, i think that more often since i have Vista, or at least this new PC. I always get out of the second tp frozen and have to relog


Fluf Fredriksson added a comment - 07/Sep/07 07:06 AM
Bump!

Just to keep this issue in view.
I had it again today. These days I just go and make a cup of tea while the second teleport sorts itself out.
Oddly I can hear the environment effects during the second TP. So am guessing I'm actually stood in the same spot according to any observing AV's.

No reliable repro noticed yet. Sorry!


Sylver Vuckovic added a comment - 25/Sep/07 05:10 AM
I've just had it happen to me agin too (it's at least the third time it's happened to me), both on Vista and XP x64.

Neikrad Joffre added a comment - 26/Sep/07 01:17 PM
I had this happen to me for the first time about a week ago. I was attempting to teleport to my own land so it was definitely not a 'ban' issue. As 'WorkingOnIt Linden' attempted, I let the second teleport go uninterrupted and I arrived at a second destination (i think one of my landmarks) without disconnecting.

BTW, for me, cancelling a slow teleport will always 'freeze' my session (no longer connected but I can client-side move my camera around) but that is a separate issue.


Angelica Lisle added a comment - 08/Nov/07 11:16 AM
This double TP bug seems to have gotten worse in the past few weeks, up until recently I might have gotten a double tp a few times a week, now it happens several times a day. Most of my friends are seeing a similar increase in this bug. I can still sit and wait it out, or relog, and, yes, cancelling the uninitianted TP does still cause my to be locked in position.

Gordon Wendt added a comment - 19/Nov/07 04:32 PM
Updated to major, this is an ongoing issue and severely impacts service, not a blocker since it doesn't happen every time but still is pretty serious.

Crystal Falcon added a comment - 14/Jan/08 04:17 PM
From the forums, I learned if you are quick enough to click quit on the second TP you might save yourself!

If not fast enough, you'll be stuck and unable to move, but relogging then is faster than waiting for the 2nd TP to do nothing it seems.


Phli Foxchase added a comment - 17/Apr/08 03:57 AM
No more troubles for 3 monthes. I close.