Hi Theodore, Add the following to uEnv.txt kernel options capemgr.disable_partno=BB-BONELT-HDMI,BB-BONELT-HDMIN
This was valid for the kernel I was running. Keith On Thu, Jun 9, 2016 at 9:43 AM, Theo McDonald <[email protected]> wrote: > I have the Adafruit Ultimate GPS (https://www.adafruit.com/product/746) > on a BBB right now, and I get a fix often inside, I have yet to try > outdoors. Though that is quite interesting that your having RF issues! How > did you shutoff the HDMI, super beginner here with respect to embedded > devices. > > On Sun, May 15, 2016 at 6:18 PM, Keith Conger <[email protected]> > wrote: > >> I had the same issue with my Adafruit GPS. I was able to resolve it by >> shutting off HDMI. >> >> Keith >> >> On Sunday, November 17, 2013 at 4:59:52 PM UTC-7, [email protected] >> wrote: >>> >>> Hello everyone, >>> >>> Sorry for the repost. i had posted this on the BeaglBone group, but this >>> is a BBB issue. >>> >>> I am having some problems trying to use a GPS receiver with the >>> BeagleBone black. I connected a PMB-648/688 module to one of the BBB UART >>> ports. I can see the NMEA messages coming from the GPS receiver, but I >>> never get a valid fix. I doesn't report any satellites in view (GPGSV >>> messages). Not even if I leave it on my rooftop for a couple hours. >>> >>> Initially I thought it might be a problem with the GPS receivers, so I >>> tested them on my laptop. Every one of the receivers I have worked fine, >>> taking a less than a minute to get a fix from my window. >>> >>> The next thing i thought was that there might be some power supply noise >>> messing with the GPS receiver, so I tried powering the receiver by itself >>> (connecting the grounds of my receiver supply and the BBB). Surprisingly, >>> this worked. More surprisingly, it stopped working If I moved the BBB close >>> to the GPS receiver. >>> >>> This lead me to suspect that the BBB might be causing some RF >>> interference on the GPS frequency band. My next test was to have the GPS >>> receiver and the BBB powered independently. This confirmed my suspicion. If >>> I powered the GPS receiver, waited until it got a valid GPS fix, powered >>> the BBB, and placed the BBB close to the GPS receiver, the I would get the >>> same result as before. No GPS fix, no satellites in view. Since the two >>> devices are being powered with two independent power sources, then the BBB >>> must be causing some RF interference. I do not have a RF spectrum analyzer >>> to confirm this, but I do not see any other reason.I tested this with three >>> different BBB and 6 different PMB-648/688. I always got the same result. >>> >>> I tried the same GPS receiver on a Raspberry Pi and It works fine, so >>> that is what I am going to work with for the moment. But I really like the >>> BBB, and would love to use it for my application. Is there anything I could >>> do to fix this? >>> >>> I'm sure other people have used GPS receivers with the BBB. Can anyone >>> recommend a GPS receiver that works with the BBB? I'm looking for a >>> receiver that's approximately the same size (3cm*3cm) and price ($35-$40) >>> as the PMB-648/688. I'm getting the Adafruit Ultimate GPS soon, so I'll >>> report about that. >>> >>> Thanks! >>> >>> --Juan Camilo >>> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to the Google Groups >> "BeagleBoard" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/beagleboard/c5fcde70-3c7f-41ed-8a5c-f8cd382935d5%40googlegroups.com >> <https://groups.google.com/d/msgid/beagleboard/c5fcde70-3c7f-41ed-8a5c-f8cd382935d5%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> For more options, visit https://groups.google.com/d/optout. >> > > > > -- > Theodore B. McDonald > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to a topic in the > Google Groups "BeagleBoard" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/beagleboard/I6RGYFllin8/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/CAOke5MFBtasrZp8kn3EsrSYax%3Djc2AusLZAPwivwcPpxpnJgvw%40mail.gmail.com > <https://groups.google.com/d/msgid/beagleboard/CAOke5MFBtasrZp8kn3EsrSYax%3Djc2AusLZAPwivwcPpxpnJgvw%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > -- Keith Conger keith DOT conger AT gmail DOT com http://thecongers.org -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. 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