yashsingh1/xdaforums huggingface dataset:
[Galaxy S I9000 General] dakine:
Sorry but why is the gps fix linked to froyo?

Samsung just told engadget that they were releasing a fix for the Captivate:

http://xdaforums.com/showthread.php?t=789463
[Galaxy S I9000 General] TriC_101:
Also Samsung Mobile just posted on Facebook and twitter

GPS + other improvements for Samsung ATT Captivate are HERE! Today - next few weeks OTA notification will be sent to customers! #GalaxyS
[Galaxy S I9000 General] mstrandbo:
I thought I didn't have a GPS issue, but when I started using SportyPal regularly I noticed I did indeed have. Running JM2.

The GPS gets a fix pretty quick, GPS test says I have 5-10m accuracy.

But when running SportyPal, and looking at the screen, I can see the GPS icon in the notification drawer, then suddenly my speed plummets to 0 and the GPS icon disappears. I keep walking, and some seconds later the GPS icon is back, trying to get a fix. It does get a fix pretty quick, SportyPal reports my speed as 20-30km/h (while walking), then it normalizes for a bit, then the GPS icon disappears again, and it's starts again.

This makes my path on SportyPal very erradic and inaccurate.. It's accurate when I have the fix ofc But that doesn't last long since it's going on and off.
[Galaxy S I9000 General] TriC_101:
GPS fix for AT&T as you can see it now connect to Sats under 20%

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[Galaxy S I9000 General] andrewluecke:
Actually, you need RAIM/FDE to ensure the accuracy bubble is correct at all times actually. But there seems to be driver issue which causes it to jump around more than it should (as you have mentioned). It might be related to skyhook and other AGPS systems as you mentioned, but really, we are just all speculating..
[Galaxy S I9000 General] Beards:
Thanks... I saw this over on Android Central earlier but apart from a very brief (less than a second) period, I only noticed it picking up just the one single SNR of 18 which disappeared almost immediately.
[Galaxy S I9000 General] Beards:
Officially ~ Stay tuned to Keis from 12:00 Amsterdam time (that’s 6 a.m. EDT/ 3 a.m. PDT).

However Unofficially....... I'm still a little skeptic.

The 'other' release date I have is set to 20,October 2010. Reason, modifications and adding features to the Froyo.

This unofficial date for me would include the fix for the last minute problem that was found in the Froyo conversion.
[Galaxy S I9000 General] miki4242:
I've a lot of other kernel / driver issues on my plate already, but I want to help try establish a kind of 'baseline' with the GPS driver, e.g. test it stripped bare of any A-GPS stuff which could interfere with it.

Basically, asses its cold-start performance, lock time, number of sats it locks to, lock stability and accuracy.

Since the setup appears to support NMEA output, it shouldn't be too difficult to feed this into analysis software and compare it in different scenarios: power-saving off or on, with / without A-GPS features active, etc.
[Galaxy S I9000 General] ludovicianul:
Just a question, not actually sure if this is the right thread. I've done most of the GPS fixes i found on this site. The GPS is better now. It acquires a GPS lock under 10 seconds with 5-10 m accuracy, BUT when i use My Tracks for example the GPS is loosing signal. It records well for 4 km, but after it just stop recording even thought My Tracks says it is recording.

Is someone having a similar program?
[Galaxy S I9000 General] foxbat121:
There is no *true* GPS fixes out there. There may never be one as far as I concern judging by Samsung USA's claim that current JH7 update is the GPS fix (it doesn't fix much). Yes, you may get a quick lock when you standing still. The moment you move, the GPS craps out.

It is only good for pin point where you are standing. Not good for day-to-day navigation. I think that should be the expectation we all need to set from now on.

Samsung + Broadcom = EPIC failure. Burnt twice already by this combination (google Samsung BD-UP5000 universal HD player)
[Galaxy S I9000 General] dakine:
Anyone else getting better results with JPK?! Im getting very good tracks off that Rom (so far) with sensor aiding on. I'll see if it stays consistent over a couple days.
[Galaxy S I9000 General] darkoroje:
GPS results are better with JPK but I still have GPS lock drops while driving. It is improved from before, but unfortunately far from being reliable.

I think at this stage it is reasonable to assume that there is some kind of hardware problem with GPS on Galaxy. After all, most of the GPS software stack is the same between Galaxy and other Android phones, and other phones do not have these GPS issues. Maybe the GPS antenna in Galaxy is not good enough so the GPS signal is weak, or there is a problem with the Broadcom GPS chip. Unfortunately I am not a GPS expert so it is hard to come to a definitive conclusion.
[Galaxy S I9000 General] eitama:
Gps reception degrades when charger is connected

Using gps test it was amazing to see how all satellites dropped to 50% the moment I connected the charger in my car. Outdoors. Jg4 with voodoo

Any one care to verify?
[Galaxy S I9000 General] AllGamer:
very interesting notion, something like a car electric power might be affecting it?

when i use it with and without the car charger reception remains the same for me

which App are you using to test?

I'll take a few screenies later when i get on my car
[Galaxy S I9000 General] AllGamer:
have you tried using the GPS on landscape mode, or even upside down?

you get better reception when the bottom is facing up, than when it's on the side, low reception when it's facing the normal upright position

so, yes that does confirm what you say about the GPS antennae or whatever they are using inside is installed at the bottom instead of the top of the phone

i'd really like for some Dev to create a 180/360 hack so that we can use all the software upside down or side ways
[Galaxy S I9000 General] mozzboiDK:
My gps is working fine, now that i have enabled skyhook. Buy i dont use my gps so much. But the other day i could not get a lock while i was driving. Ill try when i out driving next time..

GT-I9000
[Galaxy S I9000 General] eitama:
Waze + GPS Test

I'll make some as well tomorrow.
[Galaxy S I9000 General] ~gtw:
I am unable to reproduce this.
[Galaxy S I9000 General] foxbat121:
Get a new charger.
[Galaxy S I9000 General] foxbat121:
I just did a test. It is other way around for my Captivate (maybe different than i9000). I noticed for a while now that landscape mode get slightly worse GPS SNR than portrait mode. ANd when I just tried upside down vs upright, my phone shows upright has the best SNR. So, on my phone, the GPS antenna may be on top of the phone.

And I noticed, GPS only really works well when I have at least 2 or 3 satellites in upper 30 or low 40 SNR. But some days or some places, I only have low 30s or 20s, the GPS tracks like crap.

So, it does seem the GPS issue is related to the signal level. But BCM 4751 is supposed to work well in low signal situations. Don't know who is to blame here. Probably 60% for Broadcom's faulty chip and 40% for Samsung's crappy hardware design.
[Galaxy S I9000 General] Roy Ngan:
Never have such problem. Might be because your environment changed, like tall building around your vehicle while you are moving and charging at the same time
[Galaxy S I9000 General] lostabeer:
Dont think i ever got the gps to work properly... Tho i still prefer the old style reading a map book so dont bother me too much lol
[Galaxy S I9000 General] jutezak:
I noticed the GOS connecting and disconnecting too. Maybe has to do with standby, the way the GPS device is opened from the software? Some track loggers behave better than others.

One logger was set by default for a 2 second update interval, which just does not work very well. At the moment I run GPSTracker Lite, which seems to run nicely in the background collecting data. I have the feeling that other programs behave better when GPSTracker is logging and keeping the GPS running.
[Galaxy S I9000 General] eitama:
It's surely not building I was on a high way with clear sky and open view. I tried it like 10 times - it was persistent. I'll try a new charger!
[Galaxy S I9000 General] exadeci:
Radio on ? :D

It mess up a lot with gps I had issues when radio was running with my iphone 3gs (never tried with my sgs)
[Galaxy S I9000 General] Rizlo:
This is interesting, yesterday I went on a trekking trip and got out with a nearly flat battery, so to reach the place I connected my phone to charger and GPS wouldn't get a fix no matter what. After 30 minutes, fearing to get lost, I fired up my girlfriend's X10 mini which, needless to say, locked almost instantly and drove us to the meeting point.

When we were up there I decided to try and track our path and the damn thing locked in just a few seconds.

Of course, the problems came afterwards, with a completely nonsensical tracking, but that's an old story right?
[Galaxy S I9000 General] ggraja:
*#3214789650#

try this, works on JPK
[Galaxy S I9000 General] jean2323:
hi

for me gps worked fine with the gsm connection - spot on detection of the position without using the 3g data, just the gsm network ( i have an european version of the firmware)

but in flight mode; with no gsm connection; it seems to be unable to get a connection with the satellites ... i waited 15 mins maybe more ... even with a wifi connection and a-gps activated ... it still failed to get the position

i've activated skyhook ... still nothing

strange!
[Galaxy S I9000 General] jean2323:
skyhook seems to keep the gps on even when you kill all the map applications ... that's how it helps getting a connection?
[Galaxy S I9000 General] neil85ae86:
Is heat the culprit? Yes another GPS thread.

I am now on my second vibrant from bell canada. This one arrived with their latest fixes pre installed and I have to admit this one is much better than the first one that I returned.

It still has it's share of minor issues however all the major stuff is satisfactory, with the exception of GPS of course.

After a week with the new phone yesterday I decided to give the GPS a bit of a work out during my hour long commute. What triggered this experiment was earlier in the day I stepped out for a coffee and fired up the GPS receiver then fired up Yelp and it found me instantly, same with nav, same with maps.

I only turn on the GPS receiver when I need it. When I got in my car I plugged in the power, turned on the GPS receiver and fired up nav and inputed my destination. As soon as I left the parkade I got a lock, and nav continued to function flawlessly, fast, accurate, and even corrected in a reasonable amount of time for an unexpected detour. This lasted about 20 minutes then it all went berserk. I then shut down nav in frustration, when I grabbed the phone to move it to the seat beside me I couldn't help but notice that it was cooking.

After about 10 minutes I decided to try again as I was curious where nav would send me. Same thing, ran great for 20 minutes then went nuts. This time I left it running, it just could not recover. I'm betting that if I did another cool down cycle it would have recovered for another 20 minutes.

Their is a lot going on with nav, voice, graphics, plenty of processing and the GPS receiver is running so I'm not surprised it gets hot.

I have held some 5 bell vibrants and have yet to see one with working GPS, I was very surprised with my limited success yesterday. I've also been concerned with the fact that samsung canada website does not mention GPS anywhere in the features or specs for this phone (however bell do mention it on there site).

I hope it's not insufficient cooling as it will likely never work with full nav, and I really don't want to rig up active cooling in my car lol.....although I might need to experiment to attempt to gather more evidence.

Neil
[Galaxy S I9000 General] distortedloop:
Well, first question, what does "alves" mean? ;)

To test your heat theory is simple enough. Make some kind of cooling arrangement to control the heat on the phone and run your nav tests again.

Taking the back off and holding the phone in front of the car's dash fans would probably be sufficient if you can manage to arrange that. Another easier to do thing would be to wrap a towel and piece of plastic wrap around a blue ice block (plastic thing you freeze) and lay the phone on top of it. Towel to absorb any condensation and plastic wrap to prevent water risk to phone.

Heat might very well be the issue on your phone, but it's not the issue on everyone's phone. My phone does get pretty warm, ok actually pretty hot, when it's plugged into the car charger and running a podcast player while giving me nav directions, but it's never behaved as you describe (GPS going wonky as the phone gets hot).
[Galaxy S I9000 General] neil85ae86:
..

Fixed the swypos, out of the box swype wants to put in alves instead of "a", I had to figure out how to delete that, it was driving me nuts.

its getting cold up here in the great white north even if I remove the skin, rear cover the keep the windows all down out just might be enough. I'll try something.

Neil
[Galaxy S I9000 General] neil85ae86:
good cold trip home

On my way home tonight I started Nav before turning on the GPS receiver, I started up the receiver when prompted then Nav couldn't get a lock. I restarted Nav and it locked on right away.

I drove home without my silicone sleeve on the device and with the window down and no heat, it worked flawlessly right to the checkered flag, did not slip up at all the entire way home.

was surprised
[Galaxy S I9000 General] AllGamer:
how high do you usually keep the heat on?
[Galaxy S I9000 General] dakine:
Ive had the same issue. Only happens when you are charging while using several apps. Mounting the phone above a fan helps.
[Galaxy S I9000 General] tmkris:
GPS cannot lock at all onboard a flight

i was testing the SGS on board a flight, i had good 8 - 10 before the take off, after take off i gradually lost the lock and at touch down lock happens again. I am not sure if this indicates any thing to the gurus here but thought would share the observation.

My BB bold did not have any problem with the lock during the flight - while SGS had reception never a lock .

Cheers,

tmkris
[Galaxy S I9000 General] dwillMUFC:
Im not sure if there are different laws depending where you live, but, your not really supposed to be doing this on an aeroplane aha. Anyway if you want to risk using your G-sensor to control the plane. It has been highly commented that the Galaxy s' GPS is crap, there we are, i mean i really don't see the use of using a gps on a plane, and im sure its not one of the test Samsung carries out, unless your a pilot and get lost aha.

Dan
[Galaxy S I9000 General] psp888:
I don't think there is much danger using GPS on board, it's not broadcasting anything, just receiving.

Planes are very well shielded and I don't think any GPS device would get a lock inside.
[Galaxy S I9000 General] AllGamer:
it should work if you sit right next to a window

it wont work if you are on the next sit away from the window
[Galaxy S I9000 General] foxbat121:
No, actually there is a law that mandates any GPS chip that can still functioning over certain speed limit (a few hundred mph) is considered bullestic application and requires government permit to sell and export. As a result, all the consumer GPS chip automatically shut off above certain speed to avoid this government control.
[Galaxy S I9000 General] lgkahn:
make sure it is on cold start. becuase you have changed service areas and hot start will not work.
[Galaxy S I9000 General] lgkahn:
this is b.s.. my i8910 works on a plane..

also some of the airline mags themselves say you can use gps.. and i have seen many private pilots use gps.
[Galaxy S I9000 General] :
Perhaps you were in a metal bodied (aluminium over GRP) aircraft rather than a straight GRP bodied one.
[Galaxy S I9000 General] AllGamer:
so say, if i happen to be in a Lamborghini going at 350mph the GPS will not work?

i've never heard of such law before...., does anyone got a wikipedia link or something to confirm that?
[Galaxy S I9000 General] foxbat121:
I try to remember where I read it from recently. But the actual speed limit is much higher than a Lamborghini can ever achive. It is to prevent such chip be easily used in missiles and bombs.

EDIT: Here is the link http://en.wikipedia.org/wiki/Global_Positioning_System
[Galaxy S I9000 General] :
Don't know much about cars do you :p

Fastest production car = Bugatti Veyron SS @ 278MPH official.

That's 100MOH more than any Lambo.
[Galaxy S I9000 General] AllGamer:
there is a section in the wikipedia link about consumers GPS, but it's very sketchy and full of holes

and it seems to mainly aim at US consumers, and US department of defense

re: car, no i'm not a car fanatic, i don't memorize all the car facts in my head, nor any other fact, that's why we have the internet, so we don't waste our brain memorizing stuff that we seldomly only use once in a long while

i don't even remember my house number :p

i have even forgotten the multiplication table

i'll rather implant a CPU + hard drive in my head + an optical AUX port to jack up to the internet or PC device, or Phone so you can interface with any electronic as needed.

the technology is already available, too bad it's only for a selected few right now

looking forward to the future with cyber implants sold over the counter :D
[Galaxy S I9000 General] foxbat121:
Technically, US DoD owns the GPS. So any company that wants to make a GPS chip has to get green light from US DoD.
[Galaxy S I9000 General] AllGamer:
yet another Monopoly due the lack of Space ventures

looking forward to the days when UK and China starts rocketing their daily flights to space and satellites.

unfortunately those are the only 2 countries that can rival the US space monopolization at the moment.
[Galaxy S I9000 General] Prasad:
It's BRIC - Brazil Russia India China :-)
[Galaxy S I9000 General] foxbat121:
I'm pretty sure EU (not UK) and China's system will have the same or more restictive rules.

You are welcome to spend your own gazillion dollars to setup your own system and make up whatever rules you want.
[Galaxy S I9000 General] Snuble:
I guess best chance of a lock would be holding it against the window. And use gpstest or similar to obtain the first lock.
[Galaxy S I9000 General] AllGamer:
navigation GPS software will work best

awesome to see your "car-plane" going at 350 kph on the navigation software :D
[Galaxy S I9000 General] :
MMMmmm... Taco's :rolleyes:
[Galaxy S I9000 General] brunes:
There is no danger in using any cell phone on a plane, this doesn't change the FAA rules.

There is no danger running an 80's Walkman during takeoff and landing either, it is still not allowed.

Heck some Delta flights even have wifi hot spots IN the plane now, yet during takeoff and landing and about 10 minutes after you have to shut your laptop totally down. It is total nonsense.
[Galaxy S I9000 General] AllGamer:
i always though it was rather for safety of fallen objects

i wouldn't want a laptop hitting my head in a turbulence
[Galaxy S I9000 General] huxflux2003:
So terrorists should make their missiles go SLOW!!! Solved.

I guess the BB is considered a weaponized smartphone then?
[Galaxy S I9000 General] brunes:
What would be the difference between a iPod hitting your head an a hardcover book??? I would think the book is heavier. The rule is only against electronics.
[Galaxy S I9000 General] zorxd:
So false. I used my cheap ($50) GPS many times on an airplanes, sometimes at almost 1000km/h and it worked just fine (speed, altitude, etc.)

I needed to be in the window to get a lock, but after that it worked well anywhere most of the times. As other people said, a GPS does not emit anything. The airplaine will receive GPS signal no matter if you turn on your GPS or not.
[Galaxy S I9000 General] AllGamer:
LMAO :p this cracked me up
[Galaxy S I9000 General] ~gtw:
I always thought a gps was a receiver of signals and hence could in no way affect a planes operations...
[Galaxy S I9000 General] andrewluecke:
It's actually true, but the limit is 60000ft and 1000kts. An A380 though travels at 510kts, and the service ceiling is 43000.

It's likely due to other problems.
[Galaxy S I9000 General] compuse:
it should work i the air, although at 40k feet the gps has a hard time collecting data between the satellites, leftbeside if he's flying at 600kmh =/

I have customers that bought a special gps enhancer for their iphone, they're using it in the cockpit for extra height en speed informations.
[Galaxy S I9000 General] andrewluecke:
Are you referring to RAIM/FDE support?
[Galaxy S I9000 General] compuse:
I doubt they need it accurate on the second and inch, but no idea really =/
[Galaxy S I9000 General] tameracingdriver:
Neither do you... Even a lambo countach quattrovalvole was able to do 178 mph and that was 30 years ago, pretty much every lambo released in the last 20 years can top 200.

So you either don't know about cars yourself, or you're terrible at maths :p
[Galaxy S I9000 General] compi_hu:
JM9

Those who flashed JM9, could you please post your findings related to GPS performance with it? As I heard it significantly improved the GPS in i9000.
[Galaxy S I9000 General] MadBob:
I Would have expected the software interpolation that keeps your car stuck on the nearest road, would stop the fix on the map.
[Galaxy S I9000 General] crabjoe:
Bad GPS antenna?

I have a feeling that Samsung really goofed on the GPS antenna for all the Galaxy S class phones. I think the antenna is bad, and that's the reason all the Galaxy S (Intl, and US variants) phones have GPS issues. I'm also thinking that's the reason Samsung hasn't been able to get a real fix for the GPS and when they do mention it, they say they will "Optimize" the GPS performance. You see, they can't fix bad signal (Bad antenna design) with software. They can tell everyone to use Network Assisted, which can fool people into thinking their GPS is working, but it's not truly working as it should.

Ok.. Basically, I'm saying Samsung goofed on the design of the Galaxy S phones when it comes to the GPS and that's the reason there's been no real fix. Does anyone else agree? Come on... GPS has been around for over a decade and it's not as if they don't know what programs work with it. It's not new!! So if it's not a hardware (antenna) design issue, why can't Sammy get the GPS working?