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GTR online problem

22 posts by 10 people · 06 Nov 2004 11:55 UTC - 10 Nov 2004 02:06 UTC

Jittering in GTR online races

Uwe Schurkamp described regular jitters in his car's behaviour when racing GTR online, distinct from the known join-lag bug. After suggestions about Windows 98, drivers and IRQs, he fixed it by opening GTR's hosting ports on his Linux firewall, and another poster suggested GTR, like LFS, sends packets directly when ports are open.

tech supportonline racing/leaguesGTR

Automated summary.

Uwe Schuerkamp 06 Nov 2004 11:55 UTC#29608
Hi folks, you can probably tell how desperate I am when I'm posting to web forums 8-P, but I have a problem I have come across driving GTR online. Thanks in advance, uwe ###################################################################### I am having strange MP problems in GTR: every five to ten seconds or so, the view will "twitch" ever so slightly when the game synchronises the online session. Sometimes, the viewing angle will change and snap back, at other times, the car will accelerate or move about the track a metre or so (which is usually fatal when entering a corner on the edge ;-) I've tried setting all kinds of line speeds, from modem to dsl, but haven't been able to get rid of this symptom. xp2400+, geforce 4800 se (128mb), 512mb ddr ram nvidia 61.xx drivers (latest version), win98se, sblive! value, tsw2 wheel connected to the gameport. connectivity is of course 128/768 kbit, sorry for the mix-up. The windows machine sits behind a linux gateway, connected over 10mbit/sec ethernet. for other players it's reportedly "smooth as silk", even over a modem, and ping times are in the low 100's usually 70-80ms, sometimes better). Frame rate is around 30-40, depending on the track. The effect is visible in both semi-pro and simulation sessions and in races with just a couple of drivers or a dozen. ###################################################################### -- mail replies to Uwe at schuerkamp dot de ( yahoo address is spambox) Uwe Schuerkamp //////////////////////////// http://www.schuerkamp.de/ Herford, Germany \\\\\\\\\\\\\\\\\\\\\\\\\\ (52.0N/8.5E) GPG Fingerprint: 2E 13 20 22 9A 3F 63 7F 67 6F E9 B1 A8 36 A4 61
"Uwe Sch�rkamp" <[email hidden]> wrote in message news:[email hidden]... > > xp2400+, geforce 4800 se (128mb), 512mb ddr ram > nvidia 61.xx drivers (latest version), win98se, sblive! value, > tsw2 wheel connected to the gameport. > GC is suss, win98 is suss, sblive value is very suss as is the gameport these days. All that stuff is well out of date, especially live/gameport. I remember some sort of issue with GPL with reguard to online and direct X vs Papy code for steering choice - this is why I'm suss about that gameport. Any problems offline?
This is probably the sychro bug that is well known. It happens when others join and only in practice sessions. Once the field is set you won't have the problem during the race. Chad "Uwe Sch�rkamp" <[email hidden]> wrote in message news:[email hidden]...
Quoted text (46 lines)> Hi folks, > > you can probably tell how desperate I am when I'm posting to web > forums 8-P, but I have a problem I have come across driving GTR > online. > > Thanks in advance, > > uwe > > ###################################################################### > I am having strange MP problems in GTR: every five to ten seconds or > so, the view will "twitch" ever so slightly when the game synchronises > the online session. Sometimes, the viewing angle will change and snap > back, at other times, the car will accelerate or move about the track > a metre or so (which is usually fatal when entering a corner on the > edge ;-) > > I've tried setting all kinds of line speeds, from modem to dsl, but > haven't been able to get rid of this symptom. > > > xp2400+, geforce 4800 se (128mb), 512mb ddr ram > nvidia 61.xx drivers (latest version), win98se, sblive! value, > tsw2 wheel connected to the gameport. > > connectivity is of course 128/768 kbit, sorry for the mix-up. The > windows machine sits behind a linux gateway, connected over 10mbit/sec > ethernet. > > for other players it's reportedly "smooth as silk", even over a modem, > and ping times are in the low 100's usually 70-80ms, > sometimes better). > > Frame rate is around 30-40, depending on the track. > > The effect is visible in both semi-pro and simulation sessions and in > races with just a couple of drivers or a dozen. > ###################################################################### > > > -- > mail replies to Uwe at schuerkamp dot de ( yahoo address is spambox) > Uwe Schuerkamp //////////////////////////// http://www.schuerkamp.de/ > Herford, Germany \\\\\\\\\\\\\\\\\\\\\\\\\\ (52.0N/8.5E) > GPG Fingerprint: 2E 13 20 22 9A 3F 63 7F 67 6F E9 B1 A8 36 A4 61
On Sat, 6 Nov 2004 09:26:12 -0800, Chad Rogers wrote: > This is probably the sychro bug that is well known. It happens when others > join and only in practice sessions. Once the field is set you won't have > the problem during the race. > > Chad Hi Chad, it's not the joinlag bug, it's a regular "jittering" when racing online. It's hard to describe, but very irritating when taking a corner on the limit. The car will accelerate randomly for bit (revs will jump audibly), the lateral position on the car might change, the viewing angle might flip to the right or to the left and then flip back, and it happens at nearly regular intervals of five to ten seconds when racing online, no matter if there are sixteen people racing or two or three. It looks like a warping problem, only that it's my car that's warping, not the others 8-P The problem persists during the race, too. Any ideas what might be causing this? Cheers & thanks again for your thoughts, uwe -- mail replies to Uwe at schuerkamp dot de ( yahoo address is spambox) Uwe Schuerkamp //////////////////////////// http://www.schuerkamp.de/ Herford, Germany \\\\\\\\\\\\\\\\\\\\\\\\\\ (52.0N/8.5E) GPG Fingerprint: 2E 13 20 22 9A 3F 63 7F 67 6F E9 B1 A8 36 A4 61
On Sun, 7 Nov 2004 00:23:04 +1100, Byron Forbes wrote:
Quoted text (17 lines)> > "Uwe Schᅵrkamp" <[email hidden]> wrote in message > news:[email hidden]... >> >> xp2400+, geforce 4800 se (128mb), 512mb ddr ram >> nvidia 61.xx drivers (latest version), win98se, sblive! value, >> tsw2 wheel connected to the gameport. >> > > GC is suss, win98 is suss, sblive value is very suss as is the gameport > these days. All that stuff is well out of date, especially live/gameport. I > remember some sort of issue with GPL with reguard to online and direct X vs > Papy code for steering choice - this is why I'm suss about that gameport. > > Any problems offline? > >
Nope, offline runs fine at around 30-50 fps (I turned down some details). The same rig runs all other sims fine online (including LFS, which uses the DX routines I think), so I'd be very reluctant to update or change any of the components just to "play around" and see if the problem persists or not. If you mean "virus and worm incompatible" by "well out of date", well, I'd rather stay out of date then ;-) Cheers & thanks for your reply, uwe -- mail replies to Uwe at schuerkamp dot de ( yahoo address is spambox) Uwe Schuerkamp //////////////////////////// http://www.schuerkamp.de/ Herford, Germany \\\\\\\\\\\\\\\\\\\\\\\\\\ (52.0N/8.5E) GPG Fingerprint: 2E 13 20 22 9A 3F 63 7F 67 6F E9 B1 A8 36 A4 61
"Chad Rogers" <[email hidden]> wrote in news:[email hidden]:
Quoted text (9 lines)> This is probably the sychro bug that is well known. It happens when > others join and only in practice sessions. Once the field is set you > won't have the problem during the race. > > Chad > > >
Yeah, Uwe, does this happen while another player is joining? if so, that is something that has been with ISI sims from the beginning. One thing to do is FREEZE your wheel/pedals just as you feel it begin. I got so that I could ride these out fairly well. You can almost anticipate them and just as the screen pauses, stop everything, don't let off the gas, just hold everything for that brief moment, then you should be able to at least stay on the road. I wonder if using the latest drivers with the 4800 is such a good idea. Those cards seemed to be happiest with late 4x.xx drivers I thought. I was under the impression that most of the later releases of drivers were targeted at the GPU era cards...5900 etc. If the skipping happens just randomly, then I'm not familiar with that. Good luck dh
Sounds like a very peculiar problem indeed. I haven't seen anyone else with this issue on any of the web forums. It's quite probably win98 related since very few other people seem to be running that these days despite the fact that LFS works OK.
On Sun, 7 Nov 2004 10:36:40 +1000, Steve Simpson wrote: > Sounds like a very peculiar problem indeed. I haven't seen anyone else with > this issue on any of the web forums. It's quite probably win98 related > since very few other people seem to be running that these days despite the > fact that LFS works OK. > > Hi Steve, thanks for your comments. Can somebody direct me to the "official" tech support forum? The link seems to have disappeared from the gtr-game.com site, and as win98 is (still :) listed as a supported platform I'd like to describe my problem to them at the "official" place, so to speak. Regards, uwe -- mail replies to Uwe at schuerkamp dot de ( yahoo address is spambox) Uwe Schuerkamp //////////////////////////// http://www.schuerkamp.de/ Herford, Germany \\\\\\\\\\\\\\\\\\\\\\\\\\ (52.0N/8.5E) GPG Fingerprint: 2E 13 20 22 9A 3F 63 7F 67 6F E9 B1 A8 36 A4 61
Uwe =?iso-8859-15?Q?Sch=FCrkamp?= <[email hidden]> wrote in news:[email hidden]: > I am having strange MP problems in GTR: every five to ten seconds or > so, the view will "twitch" ever so slightly when the game synchronises > the online session. Sometimes, the viewing angle will change and snap > back, at other times, Probably not the same as what your experiencing as I've only been able to try the demo:), but I also had a strange twitching problem that caused the entire screen to vibrate. It seems that the steering wheel/x-axis twitching we always get in Windows game calibration was raising it's ugly head. As the x-axis twitched it was multiplied by the Look-To-Apex option. The cure was to turn the Look-To-Apex option down to 0 (Options/Realism/Look-To- Apex) Don
Quoted text (12 lines)> Hi Steve, > > thanks for your comments. Can somebody direct me to the "official" > tech support forum? The link seems to have disappeared from the > gtr-game.com site, and as win98 is (still :) listed as a supported > platform I'd like to describe my problem to them at the "official" > place, so to speak. > > Regards, > > uwe >
Its there, just well hidden (top left) :) http://www.gtr-game.com/forums/ / Borchers
On Sun, 07 Nov 2004 17:23:41 GMT, Don Scurlock wrote:
Quoted text (9 lines)> Probably not the same as what your experiencing as I've only been able to > try the demo:), but I also had a strange twitching problem that caused the > entire screen to vibrate. It seems that the steering wheel/x-axis twitching > we always get in Windows game calibration was raising it's ugly head. As > the x-axis twitched it was multiplied by the Look-To-Apex option. The cure > was to turn the Look-To-Apex option down to 0 (Options/Realism/Look-To- > Apex) > > Don
Hi Don, thanks for your reply. For me, the effect does not happen in offline mode, it's only visible in online play, so I guess it's something network related. All the best, uwe -- mail replies to Uwe at schuerkamp dot de ( yahoo address is spambox) Uwe Schuerkamp //////////////////////////// http://www.schuerkamp.de/ Herford, Germany \\\\\\\\\\\\\\\\\\\\\\\\\\ (52.0N/8.5E) GPG Fingerprint: 2E 13 20 22 9A 3F 63 7F 67 6F E9 B1 A8 36 A4 61
On Sun, 7 Nov 2004 18:54:29 +0100, Karsten Borchers wrote: > Its there, just well hidden (top left) :) > http://www.gtr-game.com/forums/ > Thanks Carsten! I posted my problem there a couple of days ago, no reply as of yet 8( Cheers, uwe -- mail replies to Uwe at schuerkamp dot de ( yahoo address is spambox) Uwe Schuerkamp //////////////////////////// http://www.schuerkamp.de/ Herford, Germany \\\\\\\\\\\\\\\\\\\\\\\\\\ (52.0N/8.5E) GPG Fingerprint: 2E 13 20 22 9A 3F 63 7F 67 6F E9 B1 A8 36 A4 61
"Uwe Sch�rkamp" <[email hidden]> wrote in message news:[email hidden]...
Quoted text (11 lines)> On Sun, 7 Nov 2004 18:54:29 +0100, Karsten Borchers wrote: > > Its there, just well hidden (top left) :) > > http://www.gtr-game.com/forums/ > > > > Thanks Carsten! I posted my problem there a couple of days ago, no > reply as of yet 8( > > Cheers, > > uwe
Probably in the dark on that one? It is a very odd problem. I have never seen or heard of anything like it. / Borchers
On Mon, 8 Nov 2004 12:24:13 +0100, Uwe =?iso-8859-15?Q?Sch=FCrkamp?= <[email hidden]> wrote:
Quoted text (8 lines)>On Sun, 7 Nov 2004 18:54:29 +0100, Karsten Borchers wrote: >> Its there, just well hidden (top left) :) >> http://www.gtr-game.com/forums/ >> > >Thanks Carsten! I posted my problem there a couple of days ago, no >reply as of yet 8( >
I'm sure you already checked it, but here goes anyways.. Does the NIC share an IRQ with either graphics/sound/USB/gameport? Cheers! Remco
hey Uwe, Uwe Sch�rkamp wrote:
Quoted text (7 lines)> On Sun, 7 Nov 2004 18:54:29 +0100, Karsten Borchers wrote: > >>Its there, just well hidden (top left) :) >>http://www.gtr-game.com/forums/ > Thanks Carsten! I posted my problem there a couple of days ago, no > reply as of yet 8(
i only know 1 guy as of know whos got the same problems (he has W XP, so not W98 related). Unfortunately no solution so far :-( Andreas
On Mon, 08 Nov 2004 19:39:54 +0100, Andreas Wilke wrote:
Quoted text (17 lines)> hey Uwe, > > Uwe Schᅵrkamp wrote: >> On Sun, 7 Nov 2004 18:54:29 +0100, Karsten Borchers wrote: >> >>>Its there, just well hidden (top left) :) >>>http://www.gtr-game.com/forums/ > >> Thanks Carsten! I posted my problem there a couple of days ago, no >> reply as of yet 8( > > i only know 1 guy as of know whos got the same problems > (he has W XP, so not W98 related). > > Unfortunately no solution so far :-( > > Andreas
Hi Andy, at least I am not alone on this one, I though I was going mad or something ;-) I've begun fiddling with the settings in the "multiplayer" section of my PLR file, I'll get back to the group when / if I find anything. Any idea what kind of hardware is involved in his case? My gaming machine lives behind a Gentoo Linux NAT gateway. Cheers & thanks again for your help, uwe -- mail replies to Uwe at schuerkamp dot de ( yahoo address is spambox) Uwe Schuerkamp //////////////////////////// http://www.schuerkamp.de/ Herford, Germany \\\\\\\\\\\\\\\\\\\\\\\\\\ (52.0N/8.5E) GPG Fingerprint: 2E 13 20 22 9A 3F 63 7F 67 6F E9 B1 A8 36 A4 61
On Mon, 08 Nov 2004 12:55:09 GMT, Remco Moedt wrote: > > I'm sure you already checked it, but here goes anyways.. > > > Does the NIC share an IRQ with either graphics/sound/USB/gameport? I hadn't but now I have: all components are on separate IRQ's, except for the dual fifo pci ide controller. Thanks for your help, Remco. uwe -- mail replies to Uwe at schuerkamp dot de ( yahoo address is spambox) Uwe Schuerkamp //////////////////////////// http://www.schuerkamp.de/ Herford, Germany \\\\\\\\\\\\\\\\\\\\\\\\\\ (52.0N/8.5E) GPG Fingerprint: 2E 13 20 22 9A 3F 63 7F 67 6F E9 B1 A8 36 A4 61
Hi folks, I think I solved my GTR online "twitchiness" by adding the ports needed to host gtr races to my Linux firewall ruleset. I have no idea why this should be necessary, but for now the twitchiness seems seems to be gone completely. Thanks again to all who tried to help, esp. Andi Wilke for letting me know the problem was *not* related to running win98se ;-) All the best & see you on the track, uwe -- mail replies to Uwe at schuerkamp dot de ( yahoo address is spambox) Uwe Schuerkamp //////////////////////////// http://www.schuerkamp.de/ Herford, Germany \\\\\\\\\\\\\\\\\\\\\\\\\\ (52.0N/8.5E) GPG Fingerprint: 2E 13 20 22 9A 3F 63 7F 67 6F E9 B1 A8 36 A4 61
Uwe =?iso-8859-15?Q?Sch=FCrkamp?= <[email hidden]> wrote in news:[email hidden]:
Quoted text (10 lines)> Hi folks, > > I think I solved my GTR online "twitchiness" by adding the ports > needed to host gtr races to my Linux firewall ruleset. I have no idea why > this should be necessary, but for now the twitchiness seems seems to > be gone completely. > > uwe >
Good to know I think. It seems everytime I mess with my router, I just end up loosing the net connection. Someday I'm gonna have to actually learn all that stuff.. dh
Hi, Uwe Sch�rkamp wrote:
Quoted text (7 lines)> I think I solved my GTR online "twitchiness" by adding the ports > needed to host gtr races to my Linux firewall ruleset. I have no idea why > this should be necessary, but for now the twitchiness seems seems to > be gone completely. > > Thanks again to all who tried to help, esp. Andi Wilke for letting me > know the problem was *not* related to running win98se ;-)
this guy has this PC: Intel Pentium IV Prescott Prozessor 3,2GHz mit Hyperthreading, 1MB Cache MSI Motherboard mit Intel 865PE-Chipset Arbeitsspeicher 1024 MB DDR 400MHz fsb Festplatte Maxtor 160GB mit 7200rpm, 8MB Grafikkarte Leadtek Winfast A400 Ultra TDH GF FX6800U 256MB DVD- Laufwerk 16x/48x und 3,5� Diskettenlaufwerk 8x DVD Multi Brenner LG-4082B-R (+/-) Soundkarte Audigy 2ZS,7.1, THX, 24bit Musik 10/100 Mbit LAN integriert Midi Tower mit Seitenl�fter und 400 Watt Netzteil 6x USB 2.0, 2x Front-USB, 2 serielle und 1 parallele Schnittstelle inkl. Microsoft Windows XP Home, Spielepaket, DVD-Player-&Brennersoftware inkl. Komfort-Tastatur und Logitech Opticle Wheel Mouse Uwe, did u test again, if that firewall really solved the problem? Ill tell him to deinstall his Firewall completely then. Andy
On Mon, 08 Nov 2004 23:47:02 +0100, Andreas Wilke wrote:
Quoted text (9 lines)> Hi, > > > Uwe Schᅵrkamp wrote: > > Uwe, did u test again, if that firewall really solved the problem? > > Ill tell him to deinstall his Firewall completely then.
Maybe he could first turn it off and give it a try. I haven't verified the "solution" yet by removing the rules again, but I'll give it a go tonight. Cheers & thanks again, uwe -- mail replies to Uwe at schuerkamp dot de ( yahoo address is spambox) Uwe Schuerkamp //////////////////////////// http://www.schuerkamp.de/ Herford, Germany \\\\\\\\\\\\\\\\\\\\\\\\\\ (52.0N/8.5E) GPG Fingerprint: 2E 13 20 22 9A 3F 63 7F 67 6F E9 B1 A8 36 A4 61
Uwe Sch�rkamp wrote:
Quoted text (8 lines)> Hi folks, > > I think I solved my GTR online "twitchiness" by adding the ports > needed to host gtr races to my Linux firewall ruleset. I have no idea > why this should be necessary, but for now the twitchiness seems seems > to > be gone completely. >
GTR might have online code similar to LFS. If you open up the correct port for LFS (and tell LFS you did so) the packets will be sendt directly to you instead of being relayed by the server. This will off course reduce lag but it requires a decent upstream as you will be sending identical packets to all the other cars instead of just one to the server. Maybe GTR took it one step further and tried to autodetect weither you was behind a firewall or not? Just a wild guess.... There are 3 modes in LFS: 1. I'm behind a firewall and my upstream is slow so I will only send to the server. 2 I'm behind a firewall but I will send to all other cars. 3 I can receive from all other cars and will send to all other cars. All drivers should be at 3 for the best racing experiance. :) I don't know if other racing sims do this, but it sounds like a brilliant idea to me. Went a bit OT :) http://forum.rscnet.org/showthread.php?t=41440 -- Jone Tytlandsvik http://tytlandsvik.no mailto: firstname at lastname dot no -- Jone Tytlandsvik http://tytlandsvik.no mailto: firstname at lastname dot no

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