STTY echo can't be turned on

Technical Support
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1

On the Apalis TK1 running the BSP v2.7b3 the serial console has by default echo turned off. And I’m unable to set it on using stty /dev/ttyS0 echo This command fails. Is there any way around it?

I didn’t see this with the previous BSPs.

2

Isn’t it stty -F /dev/ttyS0 echo?

3

Nope. Still not working.

root@tegra-ubuntu:/home/ubuntu# stty: /dev/ttyS0: unable to perform all requested operations
4

Hi I tried the command

sudo stty -F /dev/ttyS0 echo

with the Linux tegra-ubuntu 3.10.40-2.7.5 and BSP 2.7b3. It is working fine.
Which version of Ubuntu are u using?