Re: using svgalib on 'screen': You must be the owner of the current console to use svgalib.

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From: Johannes Zellner (johannes@zellner.org)
Date: Wed 30 Jan 2002 - 13:15:10 IST


On Wed, Jan 30, 2002 at 12:20:02PM +0200, Matan wrote:
> On Wed, 30 Jan 2002, Johannes Zellner wrote:
> > 
> > if I'm running svgalib in screen (a terminal mutliplexer, see
> > http://www.gnu.org/software/screen/screen.html) and try to
> > use svgalib I get the following message:
> > 
> >   You must be the owner of the current console to use svgalib.
> >   Not running in a graphics capable console,
> >   and unable to find one.
> > 
> > I'm using svgalib 1.9.12.
> > What's the problem?
> 
> I think using screen is the same (as far as svgalib is concerned) as
> running telnet localhost, so svgalib does not know the program is
> actually running on the local console.
> I am not sure it's a good idea to run an svgalib program from a screen
> session - when you try to move to another window, svgalib won't catch
> that (as it catches vc switches), so you will now run a program that
> thinks it's in text mode, but the video card is actually in graphics
> mode.
> 
> I guess that the only real solution is to add support for screen, the
> same as there is support for linux virtual consoles.

ok. attached is a small patch which works on screen.

-- 
   Johannes



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