Re: Qemu resets terminal to crazy defaults

[Fabiano Rosas]

Dave Blanchard <dave@killthe.net> writes:

> Hello all, can you please help me to understand what Qemu is doing here? 
>
> When connecting to the guest for example using a serial/tcp/telnet link, some 
> kind of code is being immediately transmitted over the link which screws up 
> my Xterm terminal settings, including changing the text cursor shape and most 
> notably, disabling wraparound of long lines, so that they get truncated at 
> the edge of the window instead. 
>
> Can this behavior be disabled by command line, and if not, what is the code 
> doing exactly so I can know where to disable it? I tried disabling all calls 
> to tcsetattr() but that had no effect.
>
> Dave

I looked into the automatic margins issue a long time ago and I seem to
remember it was caused by the firmware (SeaBIOS) configuring the
terminal and QEMU just never returning it to the original state. I
eventually gave up trying to fix it because I was having trouble finding
a reliable point in QEMU shutdown sequence to enable the capability
back. Nowadays I just run 'tput smam' after quitting QEMU.

Not a lot of help, I know. Hopefuly someone else has more information
about this. I'd be interested in finding a proper solution for this
situation.