Re: no serial output when using cdk/ncurses with Fbsplash

[daggs]

> Sent: Thursday, April 02, 2015 at 4:02 AM
> From: "Thomas Dickey" <address@hidden>
> To: daggs <address@hidden>
> Cc: address@hidden
> Subject: Re: no serial output when using cdk/ncurses with Fbsplash
>
> On Wed, Apr 01, 2015 at 12:32:07PM +0200, daggs wrote:
> > Greetings,
> > 
> > I have a usb image that boots something called Fbsplash (see: 
> > https://wiki.gentoo.org/wiki/Fbsplash).
> > this requires booting the system with uvesa enabled.
> > part of our gui I cdk based and the usb prints the output to both the 
> > screen and serial port for saving.
> > 
> > if I disable uvesa, I see all the outputs on both the screen and the serial 
> > port but if I enable it, I'm missing outputs on serial when we use cdk.
> > I've looked into the code of cdk and saw it is done in ncurses, looking at 
> > ncurses's code didn't labeled out anything special.
> > 
> > my only hunch is that ncurses writes directly into the vga buffer when not 
> > using uvesa. is that correct?
> > when using uvesa, where does ncurses writes to?
> 
> no - ncurses only knows how to write escape sequences to the terminal...
> 
> (MinGW port is a different case, but we've not mentioned that so far)
> 

so the issue is that in terminal mode stdout is somehow connected into serial 
when using ncurses while in uvesa mode it doesn't?