GPS takes forever to lock - Page 2

andro · 08-31-2006, 06:09 AM

Yes, it's and USB receiver. I've tried pulling and re-inserting the USB adaptor and there's no difference (on the other receiver I have, the Garmin GPS18 USB, there is a difference though, it doesn't always get initialised after resuming from standby and there is a big difference if I pull it out and insert it again - but this is another issue: since it doesn't get initialized, there's no data from the port at all, not like here, where I'm getting normal NMEA data, just no lock).
@xBrady: I know the nav SW does not have anything to do with configuration, that it just reads data. I'm worried whether I could have done something wrong with SiRFDemo, this one does have the power to change everything in the receiver's config...
@Matrix: I've tried just that today - I pulled the car out of the garage and was looking at SiRF data - just as I've said that I'll try to switch it to SiRF mode and see whether there's a difference - no, there doesn't seem to be any difference, still didn't get a quick lock - and the car indeed stayed at the same position with clear view to the sky for a couple of minutes. I think there was indeed a little difference, since when I was playing with it again half an hour later, the satellites were locked. I'll try to see whether if I do it like this that'll help... but sometimes I just don't have the time to stand still for a couple of minutes

I'll also try a full cold boot of the GPS, to have all factory defaults and see whether there's a difference. Otherwise I'll have to be talking to the manufacturer apparently

liquid_smoke · 08-31-2006, 02:07 PM

i think the issue is not your gps device but IG3 itself.
I have this same issue as others do. Yet no other gps software i have on my pc has this issue except IG3, i even reinstalled IG2 and it works fine locks as soon as i start it. Reinstall IG3 and same issue. I have streets&Trips, street atlas, IG2 &3 and only IG3 has this issue.

They likely updated or changed something in the code to probably be more compatible with additional gps devices etc and in turn broke something.
You can see its getting the data from the gpsdevice just not locking or tracking. It even displays your current speed, alt,long,lat etc.
And considering how lazy they are over at inav who knows how long we'll have to wait for a update that fixes this.

DK888 · 08-31-2006, 07:49 PM

I've had problems resuming out of hibernation with a USB gps antenna. Serial is the way to go.

MatrixPC · 09-02-2006, 03:11 AM

I think LS had nailed it.
For the pass couple days, my GPS receiver + iG3 is having problem coming out of hibernation. I never had that problem before after I update all the driver for the mobo/video/sound. With iG2 It's been fine for serveral months. No problem getting lock nor hibernation problem. Oh yeah, serveral months is with the AyAy Sir receiver. I use earthmate before that and has zero problem for a long time.
With iG3, it only come out of hibernation 3 out of 4 times. And those 3 time out of hibernation, iG3 doesn't realy get a solid lock. I just get 3 sat then drop to 2 then 0. Sometime, it get back to 5 or 6 sat like a minutes later, but sometime, it doesn't get a lock for more than 5 minutes unless I come to a complete stop for more than 30 seconds.
I just have to reinstall gps usb driver to see if it help.