View source for Emulating the XO/lang-es

{{Translation | lang = es | source = Emulating the XO | version = 48033}}
{{Ongoing Translation}}
{{ Latest Releases | livecd = inline | devel = inline | extra }}

[[Image:AP1_39.jpg|thumb|laptop-in-laptop]]

{{anchor|Quick Start - [[LiveCd|LiveCD]]}}
== Inicio Rápido - [[LiveCd/lang-es|CD-Vivo]] ==

Para muchos, el [[LiveCd/lang-es|CD-Vivo]] es la forma más fácil de probar [[Sugar/lang-es|Sugar]].  Es fácil, pero tu trabajo se pierde cuando  reinicias.
{{ Translated text |
For many, the [[LiveCd|LiveCD]] is the easiest way to try [[Sugar]].  It's easy to do, but your work is lost when you reboot.
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{{anchor|Quick Start - [[Emulating the XO/Quick Start|Emulation]]}}

== Inicio Rápido - [[Emulating the XO/Quick Start/lang-es|Emulación]] ==

La '''[[Emulating the XO/Quick Start/lang-es|emulación]]''' es otra forma de probar [[Sugar/lang-es|Sugar]]. Puede resultar un poco más difícil, pero no se pierde lo hecho.
: El sonido en [[TamTam/lang-es|TamTam]] puede no funcionar por el momento.
{{ Translated text |
'''[[Emulating the XO/Quick Start|Emulation]]''' is the other way to try [[Sugar]]. It can be harder to set up,, but work is preserved.
:Sound in [[TamTam]] may not be working at the moment. [[User:MitchellNCharity|MitchellNCharity]] 13:16, 5 June 2007 (EDT)
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{{anchor|Quick Start for Developers}}
== Inicio Rápido para Desarrolladores ==

Una alternativa es el uso de la emulación para el desarrollo de software.

Descargue la [http://olpc.download.redhat.com/olpc/streams/development/LATEST/devel_ext3/olpc-redhat-stream-development-devel_ext3.img.bz2 última imagen] de [http://olpc.download.redhat.com/olpc/streams/development/LATEST/devel_ext3/ acá]. Instale [[QEMU/lang-es|QEMU]] y el acelerador como se indica en [[Emulating the XO/Quick Start/lang-es|Emulando la XO - Inicio Rápido]]. Vea [[Emulating the XO/Help and tips/lang-es|Ayuda y soluciones]].

'''Vea [[#XO-QEMU boot broken - current workarounds|Booteo QEMU roto - soluciones temporales]]

El ''build 486 puede que funcione [http://www.j5live.com/?p=388 j5live.com]. Si no, el 445 sería la mejor alternativa. Los ''builds'' 485 y 482 tienen problemas con red (y 482 requiere de pasos adicionales [[Emulating_the_XO/Help_and_tips/lang-es#Builds_between_445_and_485.2C_non-inclusive_--_Workaround_for_netfs_preventing_boot|Builds 445 al 485 no inclusive - soluciones para el netfs]].
{{ Translated text |1=
Developing on emulation is one alternative for developing software.

Get [http://olpc.download.redhat.com/olpc/streams/development/LATEST/devel_ext3/olpc-redhat-stream-development-devel_ext3.img.bz2 the latest image]
from [http://olpc.download.redhat.com/olpc/streams/development/LATEST/devel_ext3/ here].  ''(add link to tinderbox)''
Install QEMU and kernel acceleration as described in [[Emulating the XO/Quick Start]].  See the [[/Help_and_tips]] "Development" section.

'''See [[#XO-QEMU boot broken - current workarounds]].'''

Build 486 may be working[http://www.j5live.com/?p=388].  Otherwise, 445 is still your best bet.
485 and 482 have network issues (and 482 requires an additional workaround
[http://wiki.laptop.org/go/Emulating_the_XO/Help_and_tips#Builds_between_445_and_485.2C_non-inclusive_--_Workaround_for_netfs_preventing_boot]).
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{{anchor|Overview}}
== Overview ==

Una forma de correr software OLPC es usando un emulador en su PC. Vea [[Getting started programming/lang-es|comenzando a programar]] para más opciones.

Note '''[[:Category:Emulation]]''' y '''[[Emulating the XO/Help and tips/lang-es|Ayuda y soluciones]]'''.

Para jugar, se puede usar el [[LiveCd/lang-es|CD-Vivo]], o [[QEMU/lang-es|QEMU]] (como en el 'inicio rápido', pero con una imagen diferente), o quizás alguna de nuestras [[Developer Images/lang-es|imágenes de desarrollador]] distintas al [[LiveCd/lang-es|cd-vivo]]. Otra alternativa es fijarse en la [[:Category:Installing_Sugar|categoría de instalación de Sugar]]. Vea [[Getting started programming/lang-es|comenzando a programar]] para una comparación.

Una alternativa frecuente es usar [[QEMU/lang-es|QEMU]] junto a su acelerador <tt>kqemu</tt>. Vea su [[Emulating the XO/Quick Start/lang-es|inicio rápido]] para comenzar. Sin embargo, para el desarrollo, usaremos una imagen diferente (<tt>.img</tt>) con algunos utilitarios extra. Vea [[OS images/lang-es|imagenes del SO]], incluyendo la '''[[OS_images/lang-es#Latest Stable Build|última versión estable]]'''.

En vez de [[QEMU/lang-es|QEMU]], se puede utilizar [[Emulating the XO/UsingVMware/lang-es|VMware]], y hay otras alternativas para [[Emulating the XO/Mac/lang-es|Mac]].

Por favor informe sus resultados en [[User Feedback on Images/lang-es|feedback sobre las imágenes]]. Existe además un [[Virtualization Common Room/lang-es|Salón de Virtualización]] sobre el tema.

Existen algunas [[Emulating the XO/Limitations of XO disk images/lang-es|limitaciones en las imágenes de disco XO]].

La diferencia entre ''<tt>LATEST-STABLE-BUILD</tt>'' y ''<tt>LATEST</tt>'' es quizás de interés para aquellas personas usando XOs reales. Emulando, los desarrolladores deberían usar ''<tt>LATEST</tt>'', y cuando ''<tt>LATEST-STABLE-BUILD</tt>'' es viejo (un par de semanas), los no desarrolladores también.
{{ Translated text |
One way to run oplc software is using an emulator on your pc.  See [[Getting started programming]] for other options.

Note '''[[:Category:Emulation]]''' and '''[[Emulating the XO/Help and tips|Help and tips]]'''.

For play, you can use [[LiveCd]] or [[Emulating the XO/Quick Start|Quick Start]].

For development, you can use [[LiveCd]], or qemu (as in quick start, but with a different image), or perhaps one of the [[Developer Images]] other than the LiveCd.  An alternate approach is to attempt [[:Category:Installing_Sugar|installing sugar]].  See [[Getting started programming]] for a comparison.

A common development approach is to use [[QEMU]] with kqemu acceleration.  See [[Emulating the XO/Quick Start|Quick Start]] for the basics.
Though for development, we will use a different .img, one with a few extra utility programs.  See [[OS images]], including '''[[OS_images#Latest_Stable_Build |latest stable build]]'''.

Instead of qemu, you can run [[Emulating the XO/UsingVMware|VMware]], and there are additional options on a [[Emulating the XO/Mac|Mac]].

Please report your experiences in [[User Feedback on Images]].  There is a [[Virtualization Common Room]].

There are [[Emulating the XO/Limitations of XO disk images|limitations with XO disk images]].

The LATEST-STABLE-BUILD versus LATEST build distinction is mostly of interest to people running on actual XO's. In emulation, developers should usually use LATEST. And when STABLE is old, non-developers probably should too.
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{{anchor|Comparison of alternatives}}
== Comparando alternativas ==

La laptop OLPC es hardware especializado, corriendo una versión mínima de Fedora de Red Hat, sobre la cual corre [[Sugar/lang-es|Sugar]]. Pero que si no se tiene una laptop OLPC? Hay varias alternativas, cada una posible de ser usada en modos diferentes.
{{ Translated text |
An OLPC laptop is custom hardware, running a stripped-down Red Hat linux, running [[Sugar]]. But what if you don't have a real olpc laptop? There are a several options, which can each be used in a couple of ways.
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{{anchor|recommendations}}
=== recomendaciones ===

{| border=1 cellspacing=0

|- style="background:lightgray; "
! platforma {{Translated text |platform| display = block}} !! proposito {{Translated text |purpose| display = block}} !! recomendación {{Translated text |recommendation| display = block}}

|-
| Windows || desarrollo || imagen de disco XO emulado; o Ubuntu emulado con <tt>sugar-jhbuild</tt>; (o CD-desarrollador o CD-Vivo)?.  (''necesitamos sus informes'')
|- style="font-size:66%; font-family:fixed; background:#eaeaea; "  <!-- TRANSLATED ROW -->
| Windows || development || emulated xo disk image; or emulated Ubuntu with sugar-jhbuild; (or develoepr CD or LiveCD)?.  (''need your reports'')

|-
| Mac || desarrollo || imagen de disco XO emulado; o Ubuntu emulado con <tt>sugar-jhbuild</tt>; (o CD-desarrollador o CD-Vivo)?.  (''necesitamos sus informes'')
|- style="font-size:66%; font-family:fixed; background:#eaeaea; "  <!-- TRANSLATED ROW -->
| Mac || development || emulated xo disk image; or emulated Ubuntu with sugar-jhbuild; (or developer CD or LiveCD)?.  (''need your reports'')

|-
| Mac con Parallels || desarrollo || instale Ubuntu 32-bit, y [[Sugar on Ubuntu Linux/lang-es|Sugar en Ubuntu Linux]].  Vea [[Emulating the XO/Mac/lang-es|Emulando la XO - Mac]].
|- style="font-size:66%; font-family:fixed; background:#eaeaea; "  <!-- TRANSLATED ROW -->
| Mac with Parallels || development || install Ubuntu 32-bit, and [[Sugar on Ubuntu Linux]].  See [[/Mac]].

|-
| Ubuntu 32-bit || desarrollo || [[Sugar with sugar-jhbuild/lang-es|Sugar con <tt>sugar-jhbuild</tt>]] y [[Sugar on Ubuntu Linux/lang-es|Sugar en Ubuntu Linux]]
|- style="font-size:66%; font-family:fixed; background:#eaeaea; "  <!-- TRANSLATED ROW -->
| Ubuntu 32-bit || development || [[Sugar with sugar-jhbuild]] and [[Sugar on Ubuntu Linux]]

|-
| 32-bit linux || desarrollo || [[Sugar with sugar-jhbuild/lang-es|Sugar con <tt>sugar-jhbuild</tt>]]
|- style="font-size:66%; font-family:fixed; background:#eaeaea; "  <!-- TRANSLATED ROW -->
| 32-bit linux || development || [[Sugar with sugar-jhbuild]]

|-
| 64-bit linux || desarrollo || imágenes de disco XO bajo [[QEMU/lang-es|qemu]]; o [[LiveCd/lang-es|CD-Vivo]] una vez que sea actualizado (el actual es de abril)
|- style="font-size:66%; font-family:fixed; background:#eaeaea; "  <!-- TRANSLATED ROW -->
| 64-bit linux || development || xo disk images under qemu; or [[LiveCd]] once it gets updated (currently it's April)

|}
: No creo realmente en la opción developer/liveCD Windows/Mac. No he escuchado a nadie que la esté usando. Y es muy vieja (abril), aunque el usuario [[User:Mcfletch|Mcfletch]] dijo (en mayo) que era una opción y por eso se la incluyó. [[User:MitchellNCharity|MitchellNCharity]] 09:19, 23 June 2007 (EDT)
{{ Translated text | 1=
:I don't really believe the development option of Windows/Mac developer/live CD.  I've not yet heard of it actually being used.  They are months out of date (April).  But [[User:Mcfletch|Mcfletch]] said (in May) it's an option, so I added it.  [[User:MitchellNCharity|MitchellNCharity]] 09:19, 23 June 2007 (EDT)
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{{anchor|background}}
=== background ===

{| border=1 cellspacing=0
|- style="background:lightgray; "
! opción{{ Translated text |option| display = block }}
! actualización{{ Translated text |updated| display = block }}
! sonido?{{ Translated text |sound?| display = block }}
! cámara?{{ Translated text |camera?| display = block }}
! biblioteca?{{ Translated text |library?| display = block }}
! etoys?{{ Translated text |etoys?| display = block }}
! R/W?{{ Translated text |R/W?| display = block }}
! software de desarrollo{{ Translated text |development software?| display = block }}
! red?{{ Translated text |net?| display = block }}
! comentarios{{ Translated text |comments| display = block }}

|-
| [[:Category:Installing Sugar|Instalando Sugar]]
| continuou || si || si? || si? || si
| si || las propias || si
| En algunas plataformas, lleva tiempo y espacio (horas y ~3GiB), pero "funciona". En otras, puede ser dificil de instalar.
|- style="font-size:66%; font-family:fixed; background:#eaeaea; "  <!-- TRANSLATED ROW -->
| [[:Category:Installing Sugar|Installing Sugar]]
| continuous || yes || yes? || yes? || yes
| yes || your own || yes
| On some platforms, it takes time and space (hours and ~3GB), but "just works".  On others, it is quite difficult to install.

|-
| [[LiveCd/lang-es|CD-Vivo]]
| Abril || si (boot) si? (qemu) || si? (boot) no (qemu) || no || si
| no || toolchain, Gnome || si?
| Inicio Rápido alternativo. Puede ser usado para ''bootear'' como emulado en [[QEMU/lang-es|qemu]]. Ver abajo Problema A.
|- style="font-size:66%; font-family:fixed; background:#eaeaea; "  <!-- TRANSLATED ROW -->
| [[LiveCd]]
| April || yes(boot) yes?(qemu) || yes?(boot) no(qemu) || no || yes
| no || toolchain, Gnome || yes?
| Alternative Quick Start. Can both be booted from, and used in qemu. Problems: A.

|-
| colspan=10 style="background:lightgray; " | [[OS images/lang-es|imágenes de disco XO]]:{{ Translated text |[[OS images|XO disk images]]:| display = block }}

|-
| colspan=10 | ÚLTIMA VERSIÓN ESTABLE <span style="font-size:80%; "><tt>http://olpc.download.redhat.com/olpc/streams/development/LATEST-STABLE-BUILD/</tt></span>{{ Translated text |LATEST-STABLE-BUILD| display = block }}

|-
| ...development-ext3.img
| ~mensual || si/B || no || si || si
| si || no || tras configurar
| Inicio Rápido para evaluar Sugar
|- style="font-size:66%; font-family:fixed; background:#eaeaea; "  <!-- TRANSLATED ROW -->
| ...development-ext3.img
| ~monthly || yes/B || no || yes || yes
| yes || no || after config
| Quick Start for getting a look at Sugar.

|-
| ...development-devel_ext3.img
| ~mensual || si/B || no || no || si
| si || un poco || tras configurar
|
|- style="font-size:66%; font-family:fixed; background:#eaeaea; "  <!-- TRANSLATED ROW -->
| ...development-devel_ext3.img
| ~monthly || yes/B || no || no || yes
| yes || a little || after config
|

|-
| colspan=10 | ÚLTIMA VERSIÓN <span style="font-size:80%; "><tt>http://olpc.download.redhat.com/olpc/streams/development/LATEST/</tt></span>{{ Translated text |LATEST| display = block }}

|-
| ...development-ext3.img
| ~diario || si/B || no || si || si
| si || no || tras configurar
|
|- style="font-size:66%; font-family:fixed; background:#eaeaea; "  <!-- TRANSLATED ROW -->
| ...development-ext3.img
| ~daily || yes/B || no || yes || yes
| yes || no || after config
|

|-
| [http://olpc.download.redhat.com/olpc/streams/development/LATEST/devel_ext3/olpc-redhat-stream-development-devel_ext3.img.bz2 ...development-devel_ext3.img]
| ~diario || si/B || no || no || si
| si || un poco || tras configurar
| Bueno para nuevos desarrolladores (requiere un poco de comodidad con la línea de comandos)
|- style="font-size:66%; font-family:fixed; background:#eaeaea; "  <!-- TRANSLATED ROW -->
| [http://olpc.download.redhat.com/olpc/streams/development/LATEST/devel_ext3/olpc-redhat-stream-development-devel_ext3.img.bz2 ...development-devel_ext3.img]
| ~daily || yes/B || no || no || yes
| yes || a little || after config
| Good for new developers (requires some command-line comfort).

|-
| colspan=10 style="background:lightgray; " | OTROS {{ Translated text |OTHER| display = block}}

|-
| [[Developer Images/lang-es#Big Fedora Core 6 Build|FC6+Sugar]]
| abril || si? || ? || ? || no
| si || Todas las herramientas de Fedora || si
| 6 GiB (versión de abril; sin Etoys)
|- style="font-size:66%; font-family:fixed; background:#eaeaea; "  <!-- TRANSLATED ROW -->
| [[Developer Images#Big Fedora Core 6 Build|FC6+Sugar]]
| April || yes? || ? || ? || no
| yes || Full Fedora Softare Dev. || yes
| 6GB (April version: no etoys)

|}

; Clave :
: '''biblioteca''': Una biblioteca de muestra de el contenido incluido. ej: textos para ver en el navegador sin necesidad de una conexión de red.
: '''R/W (grabable)''': Con un <tt>.img</tt> se pueden guardar cosas entre sesiones. Con un <tt>.iso</tt> el ambiente es el mismo con cada inicio.
: '''herramientas de desarrollo''': tiene herramientas de desarrollo incluidas?
: '''Red''': la red simplemente ''funciona''? O requiere de algún paso previo?
{{ Translated text |
Key:
:library: A library of sample content is included (english version).  Ie, pretty text to web browse without having to get network.
:R/W (writable): With an .img, you can save things between sessions.  With a .iso, your environment is the same each time you start.
:development software: are development tools included?
:Net (network): does the network "just work" or "manual" steps are required?
| display = block }}

; Problemas :
: '''A''': el [[LiveCd/lang-es|CD-Vivo]] (de abril) entra en pánico cuando se corre bajo <tt>kqemu</tt> en Fedora Core 6 x86_64. Un problema con <tt>squashfs</tt>.
: '''B''': [[TamTam/lang-es|TamTam]] no emite sonidos (aún si [[Etoys/lang-es|Etoys]] puede). Causa desconocida.

'''Notas:'''
* acaso <tt>sugar-jhbuild</tt> soporta la cámara/micrófono?
** Si, si la cámara usa <tt>v4l2</tt> y 640x480. (Alguien puede confirmarlo fehacientemente? [[IRC/lang-es|IRC]]?)
{{ Translated text |
Problems:
:A: LiveCd (April) on fc6 x86_64, kernel panics under kqemu.  A squashfs problem.
:B: Tam Tam is silent (though EToys makes noise).  Cause unknown.

Notes:
*re "does sugar-jhbuild support camera/mic?": "yes, if the camera uses v4l2 and 640x480, I'd suspect so."  Can someone confirm this? (#olpc, now) [[User:MitchellNCharity|MitchellNCharity]] 00:16, 2 June 2007 (EDT)

Doables:
*Remove LiveCd's "?" above.
*Find out what's going on with Tam Tam sound.  It would be nice for the xo disk images to all be sound-yes.
*Add a microphone column?  Reconsolidate sound/camera/mic into a H/W column?
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= NUEVO XAVA =

{{anchor|XO-QEMU boot broken - current workarounds}}
== XO-QEMU boot broken - current workarounds ==

{{ Translated text |1=
Build 445 was the last version which booted cleanly under qemu ([http://dev.laptop.org/ticket/1809 ticket]).
More recent builds require workarounds.  Build 485 resolved one problem.

*When booting on qemu, add root=/dev/hda to the grub kernel line.  This needs to be done every time.
*#When you start your xo disk image on qemu, you should see a blue grub screen, doing a "Booting .. in N seconds" countdown.  Press space to interrupt it.
*#Press '''e''' (edit).  This will show you 3 lines.
*#Move to the second, which begins "kernel".  Press '''e'''.  This will take you to the end of the kernel line.
*#Add <tt> root=/dev/hda1</tt>   Then press enter.
*#Press '''b''' to continue booting.
:(This workaround avoids "WARNING: Cannot find root file system!", and being dropped into an emergency shell.)

Should add instructions to modify the image's grub config, so this doesn't need to be done every time you boot. [[User:MitchellNCharity|MitchellNCharity]] 12:04, 3 July 2007 (EDT)

It might be worth gathering the currently scattered notes, into a single list of step by step instructions, for getting from nothing, to a pair of qemu images running with Xephyr's and ssh. [[User:MitchellNCharity|MitchellNCharity]] 12:04, 3 July 2007 (EDT)
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{{anchor|Example step-by-step instructions}}
== Example step-by-step instructions ==

{{ Translated text |
Here, in one place, are assembled all the steps to get you to a working
emulated XO.  Assuming you are running on linux, and have already
installed qemu and kqemu.

The following will ''not'' work on your virtual xo: sound, camera.  The first because I haven't gotten around to figuring out why it isn't working.  The second because qemu doesn't yet support them.

And when you boot your image a second time, network likely won't work. :(  Something for another day. [[User:MitchellNCharity|MitchellNCharity]] 16:49, 4 July 2007 (EDT)
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{{ Translated text |1=
Go to
http://olpc.download.redhat.com/olpc/streams/development/LATEST/devel_ext3/
and obtain the numbered -devel_ext3.img.bz2 and its md5.  For this example I used build 485.
Though the network doesn't seem to work in 485.  482 works, but you have to work around a boot failure.
[http://wiki.laptop.org/go/Emulating_the_XO/Help_and_tips#Builds_between_445_and_485.2C_non-inclusive_--_Workaround_for_netfs_preventing_boot]

 md5sum -c olpc-redhat-stream-development-build-485-20070703_0249-devel_ext3.img.bz2.md5
 
 bzcat olpc-redhat-stream-development-build-485-20070703_0249-devel_ext3.img.bz2 > xo-485a.img

The resulting file is 1 GB.

 export PORT=2221
 qemu-system-x86_64  -soundhw es1370 -serial `tty` -kernel-kqemu -redir tcp:$PORT::22 -hda xo-485a.img
Unless you have a x86_64 cpu, use <tt>qemu</tt> instead of <tt>qemu-system-x86_64</tt>.
| display = block}}

{{ Translated text |1=
The screen will very briefly be black, and then show the blue "GNU
GRUB" screen. If it stays black, that's a qemu bug.  Kill qemu and try again.

0. Press any key to interrupt the countdown to boot.  Then,

# Press '''e'''.
# Press down-arrow to get the "kernel" line.
# Press '''e'''.  This takes you to the end of the kernel command line.
# Type space and <tt>root=/dev/hda1</tt>
# Press Enter.
# Press '''b'''.

The boot messages will scroll by, and you should eventually see the normal XO first-time login.  We'll save that for later.
| display = block}}

{{ Translated text |1=
In the window where you started qemu, you should now see a login: prompt.

# Enter <tt>root</tt>
# Then:
 
 /etc/rc5.d/S98NetworkManager stop
 mv /etc/rc3.d/S98NetworkManager /etc/rc3.d/DISABLED-S98NetworkManager
 mv /etc/rc5.d/S98NetworkManager /etc/rc5.d/DISABLED-S98NetworkManager
 echo ifup eth0 >> /etc/rc.local
 
 mv /boot/grub/grub.conf /boot/grub/grub.conf.orig
 awk '/kernel/ {print $O,"root=/dev/hda1";next} {print}' < /boot/grub/grub.conf.orig > /boot/grub/grub.conf
 grub-install hd0

If grub-install hangs, just kill it.  It may even have worked anyway.

 ifup eth0 
 killall X

Killing X should restart sugar.

If you want to enter a name with diacritics, you need to wait for X to restart, and then do:
 su olpc -c"DISPLAY=:0 xmodmap -e 'keycode  77 = Multi_key'"
This sets up Num_lock as Multi_key.  Unfortunately, the next time X is
restarted, you will lose it.  A better solution is needed.
| display = block}}

{{ Translated text |
At this point you could just proceed to use your new XO.  However, the screen resolution is wrong (1024x768).  So for development, or to get a more accurate feel for how things really look, some extra steps are required.

Once you reach the main sugar screen, you should check the Neighborhood view (F1).  If you can't see other people, either the we are having problems with the presence server, you are behind an unusually picky firewall, or networking on qemu is broken again in the build number you are using.  (Remember that ping doesn't work inside of qemu).

While this next step is not strictly required, it will enable you to use ssh and scp, which can be handy to move stuff back and forth between your host and xo.
| display = block}}

{{ Translated text |
Still as root on the xo,

1. Change the root password.
 passwd
Don't worry if it says something like "BAD PASSWORD: ", and complains about the password you picked.  It will still work.

2. Change the olpc password.
 passwd olpc

Now you can use ssh and scp.
| display = block}}


{{ Translated text |1=
The current released version of QEMU doesn't support 1200x900, so we use a Xephyr remote X server.  Each time you boot the xo, if you want 1200x900, you'll need to do these next steps again, except for the ones marked "(First time only)".
| display = block}}

{{ Translated text |
1. Still as root on the xo:
 init 3
 sleep 5
 ifup eth0
 
 su olpc
 grep export /usr/bin/sugar > ~/env
 source ~/env

If the <tt>ifup eth0</tt> fails with an "already running" message, that's ok.  Perhaps it is no longer needed.
| display = block}}

{{ Translated text |
2. Back on the host, prepare Xephyr   (First time only)
 mcookie > xephyr-cookie
 export COOKIE=`cat xephyr-cookie`
 rm -f xephyr-xauth; echo "add :1 . $COOKIE" | xauth -f xephyr-xauth
 echo $COOKIE
| display = block}}

{{ Translated text |
3. On the xo, still as "su olpc", record the cookie:   (First time only)
 echo "add 10.0.2.2:1 . " PUT-THE-COOKIE-HERE | xauth
| display = block}}

{{ Translated text |
4. Back on the host, start a Xephyr:
 Xephyr :1 -auth xephyr-xauth -reset -screen 1200x900x16 -dpi 200
You will probably want to do this in its own window, as it periodically dies and needs to be restarted.
| display = block}}

{{ Translated text |
5. On the xo, still as "su olpc", start sugar:
 DISPLAY=10.0.2.2:1 sugar
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Actually, I usually ssh in from the host, and run sugar that way:

a. On the host,
 ssh -o NoHostAuthenticationForLocalhost=yes -p 2222 olpc@localhost
b. in the resulting shell,
 source ~/env
 export DISPLAY=10.0.2.2:1
 sugar
You may also want to run
 xmodmap -e 'keycode  77 = Multi_key'
to be able to enter diacritics with the Num_lock key.
But I find doing it first thing tends to kill Xephyr. :(

You should now see the XO first-login screen in correct resolution.
You can use Num_lock to enter diacritics.  Congratulations.  Sorry it
was so much bother.
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To run multiple xo's (to play with collaboration, for instance), you
can repeat the above steps.  Create a xo-485b.img, and use a different
PORT number (like 2222).  If you are using Xephyr, start a second
Xephyr, which will be 10.0.2.2:'''2''', use that instead of ...:1 in
the instructions.  You should now be able to see yourself, and
collaborate in Write.

The following will save you having to periodically type your xo password, but is optional, and can just as easily be done later.

Back on the host,

1. Create an ssh key if you don't already have one.  See [[/Help_and_tips#SSH into qemu, using a key]].

2. Copy it to the xo,
 scp -o NoHostAuthenticationForLocalhost=yes -P $PORT ~/.ssh/id_rsa.pub root@localhost:~/

3. On the xo, spread the key around:
 mkdir ~root/.ssh
 mkdir ~olpc/.ssh
 cat id_rsa.pub >> ~root/.ssh/authorized_keys
 cat id_rsa.pub >> ~olpc/.ssh/authorized_keys

You can now ssh and scp without retyping your password.
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[[Category:OS]]
[[Category:Developers]]
[[Category:Emulation]]
[[Category:Sugar]]