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Re: [Qemu-discuss] VGA choices

From: Narcis Garcia
Subject: Re: [Qemu-discuss] VGA choices
Date: Wed, 1 Feb 2017 09:23:19 +0100

-nographic cannot be combined with any other -display.
As far as I know, Curses go to local stdout; you can see easily when you
lauch Qemu from command line and, by intuition I supose that, (same as
SDL) closing the stdout channel/terminal Qemu process can be closed too.

You could launch Qemu process in a "screen" session, and attach remotely
to it when you connect through SSH.

El 01/02/17 a les 08:51, Vincenzo Romano ha escrit:
> Thanks, Narcis.
> 2017-02-01 8:29 GMT+01:00 Narcis Garcia <address@hidden>:
>> VNC is a protocol to connect to a GUI, not MDA/TXT.
>> Independently of what guest OS does or shows, Qemu only outputs display
>> through:
>> - VNC (graphic)
> Networked
>> - SDL (graphic)
> Local to the host
>> - GTK (graphic)
> Local to the host (maybe also networked with X11)
>> - Curses (text)
> Local?
>> - none (no display)
> None, indeed.
> My host is a headless server and I'd like to save all resources I can
> from it to give them to the guests.
> So I need remote access to the guests that I would like to do with
> (the latter two with SSH tunnels).
> VNC seems to me a solution, but I couldn't find enough details about
> the curses solution which
> would be my preferred solution because of its low requirements.
> Where is the ncurses output pushed to? A local PTY? A Unix socket?
> Why cannot I use -nographic with -daemonize (and VNC)?
>> El 31/01/17 a les 21:14, Vincenzo Romano ha escrit:
>>> Hi.
>>> Thanks for the feedback.
>>> I need to have a text mode console to the server via VNC (or actually
>>> whatever else) in case the network is not working or to operate on the
>>> BIOS and the boot loader.
>>> And I would like to have such a thing as lean as possible to save
>>> resources on the host.
>>> As of now I am using "-vga virtio" that is a full blown VGA. I am
>>> thinking about a PC with just 80x25 screen.
>>> --
>>> Vincenzo Romano - NotOrAnd.IT
>>> Information Technologies
>>> --
>>> 2017-01-31 19:47 GMT+01:00 A. Wan <address@hidden>:
>>>> On Tue, January 31, 2017 09:54, Vincenzo Romano wrote:
>>>>> Sorry for the typo:
>>>>> BBC=VNC
>>>>> Il 31 gen 2017 18:48, "Vincenzo Romano" <address@hidden> ha
>>>>> scritto:
>>>>> Hi all.
>>>>> I need to create a number of VM to be used as Linux servers.
>>>>> I am planning to use only a VNC console.
>>>>> Can I disable the VGA settings (-vga none) and only use the BBC server?
>>>>> If not, what's the minimal (as far as the host resources are concerned)
>>>>> configuration for the local text-only console via VNC?
>>>>> TIA.
>>>> I don't think it is possible to VNC to text mode console.  Is there a 
>>>> reason
>>>> why you don't want to telnet/ssh to a guest and then run screen?
>>>> Alex

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