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. 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