I checked with the uEnv.txt , it seems to be correct.
On Sun, Feb 2, 2014 at 9:03 PM, <meino.cra...@gmx.de> wrote: > Hi, > > maybe your terminal setting are wrong (baudrate, start/stop bit, line > termination > character, local echo) ? > > Best regards, > mcc > > > deepak karki <deepa...@gmail.com> [14-02-02 16:24]: > > Hey! > > I got a USB to serial adapter and tried getting text on screen, but I get > > random symbols - like brackets, @, # and <?>. > > I don't get whats wrong ( I followed this site > > > http://nullr0ute.com/2013/10/serial-console-options-on-the-beagle-bone-black/ > > ) > > > > Also how would modifying the uEnv.txt on the SD card help? What will make > > the BBB look for the SD card in the first place (Given that I'm not > > pressing the boot button) > > > > regds, > > Deepak > > > > > > On Tue, Jan 28, 2014 at 8:33 PM, Robert Nelson <robertcnel...@gmail.com > >wrote: > > > > > On Tue, Jan 28, 2014 at 9:00 AM, deepak karki <deepa...@gmail.com> > wrote: > > > > I'm posting after reading similar topics on this Google group, none > of > > > the > > > > solutions worked. [also my problem is a bit different than the ones > > > before, > > > > I have been struggling for about a month to get my BBB working!] > > > > > > > > Here is the sequence of problems-failed solutions I have been through > > > with > > > > my board : > > > > 1. About a month back I bought a BBB from a local retailer. Worked > > > perfectly > > > > for first two days, I was able to ssh, install pyBBIO etc. > > > > 2. The next time I booted (tried to) my board, it failed. Only power > > > button > > > > was on, other LED's didn't even start blinking. I plugged out the > power, > > > > tried 5 minutes later, it worked! ssh-ed again and shut it down (sudo > > > > shutdown 0) > > > > 3. Next time while booting, I had the same problems, removing > powering > > > and > > > > starting again did not help. > > > > 4. I downloaded Arch Linux on a microSD card, put it into the BBB > powered > > > > the board holding the boot button, within half a minute I was able > to SSH > > > > again! Arch worked. > > > > 5. I wasn't that happy with the Arch distribution, even though it > > > worked. So > > > > I got an Ubuntu image on my microSD. Tried booting the Black the > same way > > > > holding the boot button, but all that happened was all 4 LED's were > on > > > for > > > > ~15 minutes [ I still don't know why this happens! ] Then the led's > > > started > > > > to blink, I was able to SSH. Sadly this happens every time I boot > with > > > > Ubuntu (via microSD). > > > > 6. Later I thought I would re-flash Angstrom, and got the > emmc-flasher > > > image > > > > on my microSD. Booted the board with the boot button pressed. > According > > > to > > > > the manual the lights should have started flashing, and once the > image is > > > > written all 4 LED's should turn on > > > > [http://derekmolloy.ie/write-a-new-image-to-the-beaglebone-black/ ]. > > > But for > > > > me all the 4 LED's were switched on from the power on stage, for ~5 > min, > > > > later they started to blink, but after 10 min or so, all 4 LED's > abruptly > > > > went off. (In the instructions it says that all 4 LED's will go on > when > > > > writing is complete) > > > > 7. But anyway hoping that writing to the eMMC was complete, I booted > the > > > > board normally. USR0 switches on first followed by USR1, USR2. Then > it > > > > freezes here. I'm STUCK!! > > > > > > You could grab a usb-serial adapter and find out.. > > > > > > > What should I do now? > > > > also a couple more questions : > > > > - What does holding down the boot button do if the img in the SD > card in > > > not > > > > a emmc-flasher? Does it just boot from the SD card or does it also > get > > > > written to emmc? > > > > > > Holding the button guarntees it'll try to load MLO/u-boot.img from the > > > SD card first. > > > > > > > - Is there some setting by which I can boot via the SD card without > > > having > > > > to press the boot button every time and also not having to burn the > > > image on > > > > the emmc? > > > > > > A proper uEnv.txt in your sd card will guarntee it.. Otherwise just > > > "dd if=/dev/zero of=/dev/mmcblk1" bootloader gone from eMMC... > > > > > > Regards, > > > > > > -- > > > Robert Nelson > > > http://www.rcn-ee.com/ > > > > > > -- > > > 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/rWx-pr5CFoc/unsubscribe. > > > To unsubscribe from this group and all its topics, send an email to > > > beagleboard+unsubscr...@googlegroups.com. > > > For more options, visit https://groups.google.com/groups/opt_out. > > > > > > > -- > > 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 beagleboard+unsubscr...@googlegroups.com. > > For more options, visit https://groups.google.com/groups/opt_out. > > -- > 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/rWx-pr5CFoc/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > beagleboard+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. > -- 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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