Just to check, whether your hardware setup is ok... Use minicom as terminal program. It is a ncurses applikation and has a menu to set all kinds of parameters. I use this often for that purposes... Good luck! :)
deepak karki <[email protected]> [14-02-02 16:56]: > Yes, I crosschecked, There is something wrong with my "screen" setting. How > can I figure what is wrong? > > > On Sun, Feb 2, 2014 at 9:04 PM, deepak karki <[email protected]> wrote: > > > I checked with the uEnv.txt , it seems to be correct. > > > > > > > > > > On Sun, Feb 2, 2014 at 9:03 PM, <[email protected]> wrote: > > > >> Hi, > >> > >> maybe your terminal setting are wrong (baudrate, start/stop bit, line > >> termination > >> character, local echo) ? > >> > >> Best regards, > >> mcc > >> > >> > >> deepak karki <[email protected]> [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 <[email protected] > >> >wrote: > >> > > >> > > On Tue, Jan 28, 2014 at 9:00 AM, deepak karki <[email protected]> > >> 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 > >> > > [email protected]. > >> > > 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 [email protected]. > >> > 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 > >> [email protected]. > >> 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 [email protected]. > 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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