On 05/13/2011 02:36 PM, Benner Bernd (MH/EES) wrote:
> Hi,
>
> i am using a old grub grub-0.97. There is no problem with booting or early
> printk messages. The xenomai services and the linux system including X11-
> Desktop is starting very well.
> The system is frozen after the creation of the first real time task in user
> mode. ( latency,clocktest etc. )
>
> We are using a Tinycore 3.x Live Linux distribution for our system which
> runs originally with a Kernel 2.6.33. ( but there
> is no X86-ADEOS patch for this Kernel ) I have test kernel 2.6.34.5 and
> 2.6.35.13 and kernel 2.6.37.6.
> Kernel 2.6.37 do not work with tinycore ( probable UDEV- problems ).
> Systems 2.6.34 and 2.6.35 are working. The ADEOS/Xenomai patched versions
> are working very well, if nobody starts a realtime
> thread.
>
> Here is my Kernel config for Kernel 2.6.35.13, xenomai-2.5.6
>
> When I debug the xenomai latency application the system freeze happens
> after activation of the display task.
> The display task reports the warming up message. The system is frozen before
> the latency task is created.
>
>
> Mit freundlichen Grüßen / Best Regards
> Bernd Benner
> MH/SGT3
> moehwald
> Bosch Group
> Moehwald GmbH
> Michelinstraße 21
> 66424 Homburg
> GERMANY
> www.moehwald.de
> [email protected]
> Moehwald GmbH, Sitz/Registered Office: Homburg/Saar, Zentrales
> Handelsregister/Registered Court: Saarbrücken HRB 2812
> Geschäftsführung/Managing Directors: Jens Last, Wolfgang Geenen
>
>
> -----Ursprüngliche Nachricht-----
> Von: Gilles Chanteperdrix [mailto:[email protected]]
> Gesendet: Freitag, 13. Mai 2011 12:43
> An: Benner Bernd (MH/EES)
> Cc: [email protected]
> Betreff: Re: [Xenomai-help] Xenomai 2.5.X - 32 bit X86 is not running on
> newer Kernel Versions
>
> On 05/13/2011 11:55 AM, Benner Bernd (MH/EES) wrote:
>> Hi,
>>
>> we have a well running X86 Realtime system with Kernel 2.6.29 and
>> xenomai-2.4.10. The system is able to boot from a stick and runs on
>> all our computers.
>> To fix some X11- problems with newer graphic chipsets, we try to
>> upgrade to a newer Kernel version.
>>
>> We are starting with Kernel 2.6.34.5 and xenomai-2.5.5.2 using the
>> latest ADEOS-patches. This system works on some test machines, but on
>> some Core 2 Duo 3 GHz systems with Intel Desktop Chipset ( Lenovo and
>> HP
>> ) the system freeze and/or produces strange console outputs ( only
>> line feeds ) after a start of latency or clocktest.
>> We are not able to get a kernel log from this systems.
>>
>> All permutations of Kernel 2.6.34.5, Kernel 2.6.35.13,
>> xenomai-2.5.3, xenomai-2.5.5.2, xenomai-2.5.6 has the same problems on
>> the Core 2 Duo 3 GHz machines.
>> On other machines with slower Mobile Core 2 Duo or Pentiom M
>> processors the system runs or has sometimes the same problem.
>>
>> I have try some changes in the Kernel configuration, without any
>> success. I have also try a combination of Kernel 2.6.35.13. and
>> xenomai-2.4.10 with some changes in the xenomai headers to run with
>> newer Kernels. This version has the same problem on the Core 2 Duo 3
>> GHz systems.
>>
>> Is there any way to find the reason of this problems with Xenomai
>> 2.5.X and newer Kernels 2.6.3X with 32 bit X86 or has anybody similar
>> problems fixed.
>
> Have you tried with something more recent than 2.6.34? We had a problem
> revealed by grub2, I do not remember which version fixed it. Otherwise, you
> have to enable early printk and redirect the console to serial port or
> netconsole, in order to capture it from another computer. Without these logs,
> there is not much we can do.
If you want to see the logs:
- remove quiet from the kernel command line, if the bootloader passes it
- do not launch X, run in console, or enable serial console, netconsole,
and capture the output from another computer.
--
Gilles.
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