[Gumstix-users] Tobi board console gets stuck

[Katu T. <kat...@gm...>]

Hi,

We are using Overo gumstix with a Tobi board for a big project. For some
reason, the console doesn't always work and when it does, it stops working
after a while. Specially when you type fast. It stops responding to the
keyboard and I have to reboot the overo. I can always stop the boot
sequence, but I cannot always type in the Overo# console once the boot is
stopped.
When it boots normally, I can only sometimes login (as root). When
everything goes fine, it will work for a while and then stops working,
specially if I type fast or use the up arrow for previous commands.
 I've tried the following things but the problem persists and is quite
frustrating as it seem to be ramdom.

- I'm using a normal mini USB A to USB B cable. My computer has USB 2.0
(win 7) and I've tried different ports and two cables.
- I've tried using Putty (win 7), Minicom and Kermit (in a virtualbox with
ubuntu 12.04). They all work sometimes and then get stuck. The settings for
minicom are:
Serial Device: /dev/ttyUSB0
Bps/Par/Bits: 115200 8N1
Hardware Flow Control: No
Software Flow Control: No
(similar settings in Putty and Kermit)

- I've tried 4 different Tobi boards (all brand new) in 3 different
computers. Some of them with LEDs and Switches in the 40 pint header and
others without anything. In the ones with LEDs the problem happens more. I
read somewhere that it could be electrical noise interpreted as input by
the console, but it happens in the new ones too.
-I've tried the default Amstrong image and also different built images
(with Yocto), different kernels and u-boots. None of them worked perfectly.

I guess that I'm either using the wrong cable for the console or wrong
settings?
Anyone with the same problem? any solution?

Thanks in Advance for your help!
Katu