after rosbag play, terminal can't enter password

asked 2022-08-24 07:06:35 -0500

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There is a matter in rosbag play. I just open a Terminal of ubuntu 18.04, which has been installed ros-melodic. Then I play a bag in the terminal, and stop it by 'ctrl+c'. And later, I can't switch terminal to root user, because terminal can't enter any interactive command, as shown in image below: image description

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Mike Scheutzow ( 2022-08-25 10:56:12 -0500 )edit

I replicated this issue. As a workaround, use this command at the terminal prompt:

stty sane

This command resets the tty settings.

Mike Scheutzow ( 2022-08-25 11:22:44 -0500 )edit

Thanks for reply my question, and it is solved when I do that. Then I tried to find which param of stty changed by 'rosbag play'. I type below command at the terminal prompt:

stty

then I get this:

speed 38400 baud; line = 0;
-brkint -imaxbel iutf8

And after I play a bag and retype 'stty' , just find stty control param was added two uncanonical input :

speed 38400 baud; line = 0;
min = 0; time = 0;
-brkint -imaxbel iutf8
-icanon

So enable canonical input maybe great solution, just type below at the terminal prompt:

stty icanon

When check 'stty' in terminal, it change to normal, and terminal can enter interactive command again.

VamosCC ( 2022-08-29 05:32:21 -0500 )edit

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