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Root Navigation reboots phone

Discussion in 'Android Devices' started by Sportster, Jun 27, 2011.

  1. Sportster

    Sportster Android Enthusiast
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    Using CM 6.1.2 Froyo as it's the only stable rom the phone likes till I get a new one hopefully end of July. Till then, I'm having reboot issues using Navigation. It'll work fine for awhile then boom,freezes and reboots. Used it this past weekend to hit Chicago,about 55 miles away, and it rebooted probably four times in that span. Using stock kernal set to 800 with Setcpu. Anyone else had probs with this???
     

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  2. PhilosoRaptor

    PhilosoRaptor Android Enthusiast
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    Yeah, I've had this happen since I've had my Droid (at launch), even on stock/unrooted ROMS. I blame its insufficient/measly 256 MBs RAM. I've never been able to run any audio streaming services/apps in the background while navigating because of this too. They just close out after a while and occasionally it reboots the phone.

    Sometimes though I know it's an overheating issue because the constant data traffic, GPS radio usage and display on max brightness puts a huge strain on the battery and CPU. So much that the car charger can't keep up with it and the battery still discharges despite the phone being plugged into a 950 mA charger (the most juice the phone can charge with - the chargers output is irrelevant). Sometimes I can keep this from happening by clocking the phone to slower clocks, keeping the screen as dim as I can, and it really seems to help out when I point an AC vent at the phone while navigating and/or streaming audio. If I have it in the car mount, then I keep the defrost on cold so it hits the phone good too.
     
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  3. The_Chief

    The_Chief Accept no imitations!
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    I have had the reboot/overheat problem as well. The cold defrost is something I hadn't considered - good idea! But I have found that, by turning OFF the wifi and Bluetooth functions, the car charger will sufficiently power the phone for long trips. I have managed to drive from Texas to Tennessee - a 12 hour trip - with my Droid in GPS mode the whole way without losing power. Not sure if the OP has tried that.

    But yeah, driving east in the morning or west in the afternoon will definitely cause heat issues over time...
     
  4. SNeitzel

    SNeitzel Android Enthusiast
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    I get that too on LGB.
    Clearing data and fixing permissions usually fixes it temporarily but it always comes back after I use a few other apps.
     
  5. Sportster

    Sportster Android Enthusiast
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    Have done that too T4, AC trick and the charger struggling to keep up.
     
  6. johnlgalt

    johnlgalt Antidisestablishmentarian
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    I had no real issues in March of 2010 when I drove to North Carolina (Elon Univ) for a math tourney - Nav + Pandora (OC'd to around 1000 MHz) although I did notice that the phone did end up slowly discharging, and when I hit a strong hour in sunlight it did start to heat up. I believe that was pre-FroYo.

    After FroYo, things went downhill. For the first time, when testing FroYo, I found out that OCing FroYo on a DROID + Nav = overheating. No worries, I had SetCPU downclock it in the car Dock to 600 MHz, and all was well, as long as I also had it positioned out of direct sunlight.

    Gingerbread (specifically CM 7 nightlies) is a new ball game altogether. I have yet to have NAV not overheat the phone even sitting directly in front of the AC vent. Now, I do realize that there is a lot more going on with GB, and that technically it is not really made for the phone in the first place, and that there are a plethora of issues causing this - lack of RAM, lack of processing power, too many system apps running in the background, too many user-installed apps running in the background, etc. But, the basic idea here is that even at 800 MHz, this thing overheats.

    I've recently responded to a post in CM forums where I suggested that it might be (for me) a combination of CompCache / Swapper2. I disabled both, rebooted the phone, and NAV did not seem to overheat the phone (I was currently stationary, however, *and* I later realized that it was downclocked to 600 MHz again). CC and S2 are still disabled, and I've re-enabled the OC, and I plan to test in the next couple of days to see if it still n0rks the phone or not.

    So, best bet - keep it at 600 MHz when using NAV on FroYo, and I'll get back to you on CM.
     
  7. PhilosoRaptor

    PhilosoRaptor Android Enthusiast
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    US Army - 25B (I.T. Specialist)
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    Thanks for the input, Johngalt. Hopefully in a few weeks it won't matter anymore because the Bionic will be out and I might get that if there still hasn't been any word on the Function/GS2.
     
  8. johnlgalt

    johnlgalt Antidisestablishmentarian
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    Nav did not overheat the phone when I downclocked to 600 MHz with CompCache and Swapper2 disabled. But I wasn't actually navigating, I just turned it on and left it sitting on my desk.

    I'm going to be taking a trip this afternoon and I'll test it more fully and see how well it works. If it works again, then I'll probably have to reinstall SetCPU and set it to automatically downclock when it is inserted into the CarDock and see if that helps any.

    Only real downside is that the car dock is in the windshield, and I live in Middle GA....
     
  9. Sportster

    Sportster Android Enthusiast
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    I don't think it's the temp. I drove to Rockford,IL. last night,about a 3 hr trip,and it rebooted a few times. First time it was a bit warm. Second time I had the AC on the thing and it was cool to the touch.Seemed to reboot the most while in a neighborhood. On the highway it was mostly ok but did do it a couple times,but the higher frequency 'seemed' to be in town when it has to move the map alot more and talk. I put a 32gig card in my Droid. Not sure if this could be doing it. Don't believe it has anything to do with a ROM. It's done it to me now on Froyo,CM 7 and now MIUI. It reboots usually pretty quick,too. I don't know....tired of this phone,really. Anxiously awaiting something with more memory,speed,ability.....can't wait....
     
  10. johnlgalt

    johnlgalt Antidisestablishmentarian
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    Like I said, once we got FroYo, and the default CPU clock speed went from 550 to ~800, this started happening. Don't know why, but it became worse with GB-based ROMs, as tehre is a lot mroe already running in the background.

    Also, with the AC running on hte back of the phone, the bak of the phone is not going ot be hot - but if ther eis a serious spike in SPU temp fast enough it will reboot before you really get a chane to notice the heat actually coming onto the back side of the phone.

    Plus, and this is just a guess, but I thknk that once it reboots due to heat, after that it seems to reboot a lot sooner (read: at a lot lower temp) the next few times, until (I think) an extended battery pull is performed to help reset it.
     

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