Re: Qemu resets terminal to crazy defaults

[Fabiano Rosas <farosas@suse.de>]

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.