Re: [Xenomai] Installing Xenomai Newbie

["Sebastián Pavez" <sebastian.pavez.t@gmail.com>]

El 18-10-2012 1:28, Gilles Chanteperdrix escribió:
> On 10/18/2012 02:40 AM, Sebastián Pavez wrote:
>
>> El 16-10-2012 22:11, Gilles Chanteperdrix escribió:
>>> On 10/16/2012 05:15 PM, Sebastián Pavez wrote:
>>>
>>>> Hi,
>>>>
>>>> My name is Sebastian and I'm a chilean student from PUCV. Currently I
>>>> have to develop a RT proyect, but the problem is that I dont have
>>>> experience with Linux and a lot less with Xenomai. Nevertheless i
>>>> arrived to install xenomai  2.6.0 on Ubuntu 12.04, but when I try to
>>>> execute ubuntu with the xenomai kernel the screen goes black
>>> Please remove "quiet" from Linux command line, and make sure that you
>>> have all the drivers necessary for the your system to boot, including:
>>> - video display driver
>>> - root file system device driver
>>> - root file system driver
>>>
>> Hi,
>>
>> I tried to everything from scratch, but i get the same problem. I tried
>> remove the quiet splash and I could see the line
>> "Fallback graphics default" well, this is when I execute the kernel with
>> xenomai in recovery mode. Because when I tried it in
>> a normal way I get the blacl screen with a twinkle, in this case I'm
>> able to put my password and I heard the entry sound (with some
>> distorsion), so like you said it maybe some driver's problem.
>> In the recovery mode I checked the application drivers and nothing.
>> Maybe it's something simple but I'm quite stuck, I've never used linux
>> before and I really need to get this operative, so if you or someone
>> else could help me ... in plain language would be awesome ...
>> Thanks in advance
>>
>> PS: In the recovery mode I tried the xenomai tests, I attached the
>> captures ...
>
> Your problem is configuring the kernel. So, please start with the Ubuntu
> kernel configuration, and simply disable the problematic options
> described here:
> http://www.xenomai.org/index.php/Configuring_x86_kernels
>
> If you do not know how to configure and compile a kernel, I suggest you
> read some documentation on the web, such as:
> http://kernelnewbies.org/KernelBuild
>
Thanks Gilles for your answers and time.

I tried one more time from scratch. I used Xenomai 2.6.0 and the kernel 
Linux 2.6.38.8.
The only changes I made in the configuration are the suggested in the 
page you send me (_CPU_FREQ, _APM, _ACPI_PROCESSOR _INTEL_IDLE, 
_PCI_MSI), I also disable _CC_STACKPROTECTOR and in the Preemption Model 
i choose "Preemptible Kernel (Low-Latency Desktop)". I have a i3 
processor so I choose the Core 2/newer Xeon's Processor family.

I got the same result (black screen with the sistem apparently working 
behind like I said), I realise that I didn't follow the recomendations 
mentioned in this page http://kernelnewbies.org/KernelBuild, because I 
tried to follow this tutorial 
http://www.blaess.fr/christophe/2011/12/28/xenomai-2-6-0-sur-ubuntu-11-10/ 
. So tomorrow I will try to do this on my own with newer versions of the 
kernel and probably with xenomai 2.6.1.

Before that I would like to know if the configuration parameters I 
choose are ok, I don't know how to get a list of all of the parameters 
to put it here but the only changes I made are the ones listed above. I 
have doubts with Preemptible Kernel option because it wasn't listed on 
the page, so I really don't know what is the cause. If it's not a 
configuration issue, could be other causes to my problem?? ... I hope 
not, because at least it's delimited.

Thank you very much for your help and please don't give up with me :)
Best Regards.
<http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.38.8.tar.bz2>