testing 8.2 using qemu

Sayamindu Dasgupta sayamindu at gmail.com
Thu Sep 18 13:14:31 EDT 2008

I created RPMs for Fedora 9 and 8 based on the latest qemu from SVN.
You can download them from http://dev.laptop.org/~sayamindu/qemu/
You will have to use the "-cpu athlon" option to get things working. I
could run the 8.2-760 ext3 image fine in my Intel iMac desktop
(running Fedora 9).
It would be awesome if someone can update
http://wiki.laptop.org/go/Emulation and relevant pages.


On Thu, Sep 18, 2008 at 9:44 PM, Gabriel Eirea <geirea at gmail.com> wrote:
> Ton,
> Thank you for your response, it clarifies the problem. I will try to
> compile qemu and hopefully get 8.2 running.
> Is there another way of testing 8.2 without using an emulator? I have
> the sugar package in Ubuntu 8.04. I guess there should be a way of
> installing different versions of sugar but couldn't find information
> on how to do it.
> Thanks,
> Gabriel
> 2008/9/18 Ton van Overbeek <tvoverbeek at gmail.com>:
>> Gabriel Eirea wrote:
>>> Hi list,
>>> I'm having a hard time trying to test an activity in 8.2 using qemu.
>>> The activity (Conozco Uruguay) doesn't work in 8.2 although it works
>>> fine in previous versions. We suspect it is related to rainbow (trac
>>> #8334). Since there is little documentation on rainbow (I still don't
>>> know what it is and why including it broke the activity) I'm going to
>>> follow a hack suggested by brian.
>>> The thing is, I can't make builds 759 nor 760 run using qemu. The
>>> configuration is fine because I can run build 659. In 759 it stops
>>> when saying "Booting from Hard Drive..." and in 760 it says that the
>>> kernel needs 3dnow. I downloaded the images from
>>> http://pilgrim.laptop.org/~pilgrim/xo-1/streams/8.2/
>>> Has anyone tested the images with qemu? Can anyone suggest how to
>>> proceed? I'm very interested in making my activity work in 8.2!
>> There are/were two problems.
>> The first one (8.2 image not booting at all) has been solved
>> with 8.2-760.
>> The second one (3DNow required) is due to the change to the 2.6.25
>> kernel for 8.2. The kernel checks for CPU features and does not continue
>> booting when it does not find them. The kernel for the XO is build for
>> the AMD LX-Geode and therefore looks for 3DNow.
>> If you would run qemu on a machine with an AMD processor it most likely
>> will work. If you are running it on an Intel processor, you get the
>> "kernel needs 3dnow" message.
>> See also trac #8369 (http://dev.laptop.org/ticket/8369).
>> In the CVS version of qemu you can specify a cpu type
>> (use -cpu=athlon for the XO) and then you can run 8.2 and recent joyride
>> devel-ext3 images in qemu on an Intel based machine.
>> I have a privately compiled version which runs under Windows XP
>> (have not tried it under Vista).
>> Let me know if you are interested in this one and I can send it to you.
>> If you are using Linux you will have to compile your own qemu.
>> There have been some efforts to get a qemu specific image not requiring
>> 3DNow next to the existing ext3 images (since the existing ext3 images
>> have to be able to run on a real XO when booted from USB or SD) but so
>> far this has not been realized.
>> Hope this helps explain the situation.
>> Ton van Overbeek
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Sayamindu Dasgupta

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