When Opensuse 11 machine cloned with dd, problem with serial port blocking
 

Hello,

I have cloned an embedded system that runs Opensuse 11 x86 using dd. The embedded system uses a simple serial device, by writing to the relevant device file (/dev/ttyS2, usually). Curiously, when I write to the same serial device on the newly cloned system (which, incidentally, has almost identical hardware), thusly:

echo hello > /dev/ttyS2

the command blocks for up to a minute, before finally returning without making the hardware do anything.

I can boot into Opensuse's rescue system on the clone and successfully do exactly the same thing, as I can when I boot the original's "identical" operating system.

Why might this problem occur? What can I do about it?

Regards,
Sternocera

Problem solved. It was just an IRQ problem. I changed some bios settings,

Regards,
Sternocera

Hi,
I have a similar problem with communicating through serial connections where on one machine it works, and another similar machine it doesnt. What was changes you made with IRQ settings, was it just conflicting IRQ for the serial ports? can you please tell me how you changed the irq assigned (was it in BIOS)?
will appreciate
regards
Sandy