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    Theory about why GPS performs poorly

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    Tantris | # 121 | 2008-03-19, 19:07 | Report

    I got a reboot loop yesterday after messing with some packages... Then I reflashed and noticed that we have a new OS2008-version (it somehow didn't come to my attention), and now I have a cold fix-time of about 1 min. max

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    XooH | # 122 | 2008-03-20, 08:19 | Report

    Hi. When the N8x0 is performing normally, is it possible to do some kind of "apt-get dist-upgrade" in order to get the updates installed instead of reflashing and losing all settings, not saved data,... ?

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    Duncan | # 123 | 2008-03-20, 08:48 | Report

    Originally Posted by XooH View Post
    Hi. When the N8x0 is performing normally, is it possible to do some kind of "apt-get dist-upgrade" in order to get the updates installed instead of reflashing and losing all settings, not saved data,... ?
    It is certainly possible to do "apt-get dist-upgrade". I don't think that will necessarily upgrade everything the same way reflashing does, but after the last OS release I compared the package versions I had against those in the release and they all seemed to match the new release anyway. The claimed reason for that release was fixes to the boot code: I would think that won't have been updated by apt-get but I haven't experienced problems booting so I didn't bother reflashing.

    But I'd disagree with your assertion that reflashing loses settings: so long as you have a recent backup which you can restore you shouldn't lose any settings or data. You may lose applications if they aren't installable through the package system, but once you reinstall them you should still have any settings. You will also lose any customisations you make to system files, but most people whont have those.

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    XooH | # 124 | 2008-03-20, 09:02 | Report

    Originally Posted by Duncan View Post
    You may lose applications if they aren't installable through the package system, but once you reinstall them you should still have any settings. You will also lose any customisations you make to system files, but most people whont have those.
    Yes, I was thinking of these
    And also, that I'm a bit paranoid with "settings backup/restore".
    x.

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    Laughing Man | # 125 | 2008-05-06, 02:25 | Report

    Is it bad if you do apt-cache policy osso-software-version

    and get..

    installed: (none)
    canidate: (none)

    etc..

    and would this intefere with the map program?

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    twaelti | # 126 | 2008-05-06, 09:07 | Report

    An interesting read, even if the article is already 10 years old: GPS Antenna Placement Analysis for Receivers.

    Also, from a GPS producer's FAQ: "You may get fixes much better out of a window facing South than a window facing North. Again, this has to do with where the satellites are in the overhead sky."

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    Spaceman3750 | # 127 | 2008-06-19, 05:30 | Report

    OK guys, sorry to bump an old topic, but...

    I installed the patch. The default map application isn't seeing any improvement and Maemo Mapper can't even talk to the GPS at all (the GPS icon will flash on and off sometimes, and Mapper says that it can't find the GPS).

    Help?

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    lardman | # 128 | 2008-06-19, 08:47 | Report

    The patch was for gpsd and was only useful for the one month. The time of day & date that gpsd returns is not overly important (unless you're trying to set a clock by it).

    I'd uninstall the patched version as it interfered, iirc, with adding other software (dep problems).

    Originally Posted by
    and Maemo Mapper can't even talk to the GPS at all (the GPS icon will flash on and off sometimes, and Mapper says that it can't find the GPS).
    I saw this too, but wasn't sure if it was down to the patched gpsd. Perhaps it is. In the end I'd have to run the Map application (for which the gps would turn on), then run maemo-mapper to use the gps once it was up and running.

    I think removing the patch is the best bet, this problem won't affect you for another 4 years (leap year bug), and by then I trust we'll have an officially patched version

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    Mara | # 129 | 2008-06-19, 12:41 | Report

    The Diablo is about to hit the streets soon (2Q08... and no, it doesn't have to be the last day of 2Q...) and we'll get the A-GPS support that supposed to improve the performance greatly. I'm running Diablo and have this A-GPS app installed. However, sometimes it seem like help a lot but sometimes I do not notice much if any improvement. (But I have not really used it much... I rarely need the GPS and map.) Maybe someone else who has Diablo and A-GPS app have more experience?

    Another detail I remember that in the "beginning" there was some A-GPS data stored into a file in the internal memory card... but lately that file does no longer exist. Has anyone else seen that too?

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    Last edited by Mara; 2008-06-19 at 12:47.
    The Following User Says Thank You to Mara For This Useful Post:
    spartanNTX

     
    anidel | # 130 | 2008-06-19, 12:51 | Report

    Mara, when does it help ?
    When the tablet's connected to a cellphone ?

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