Re: [Xenomai-help] kernel 2.6.32.11 with xenomai 2.5.3 fails to boot on ubuntu lucid system

[Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>]

Stefan Kisdaroczi wrote:
> On 16.08.2010 13:22, Theo Veenker wrote:
>> Theo Veenker wrote:
>>> Gilles Chanteperdrix wrote:
>>>> Theo Veenker wrote:
>>>>> Stefan Kisdaroczi wrote:
>>>>>> On 20.07.2010 09:43, Theo Veenker wrote:
>>>>>>> Hi,
>>>>>>>
>>>>>>> I want to upgrade all our PC's from Ubuntu hardy to lucid and in
>>>>>>> the process
>>>>>>> I'm also going from kernel 2.6.29.5 with Xenomai 2.4.8 to kernel
>>>>>>> 2.6.32.11
>>>>>>> with Xenomai 2.5.3.
>>>>>>>
>>>>>>> I first built and tested the 2.6.32.11 kernel with 2.5.3 on my
>>>>>>> hardy system
>>>>>>> and all went fine. But the problem is it just doesn't run on the
>>>>>>> lucid distro.
>>>>>>> However the vanilla kernel runs fine. I also tried with a config
>>>>>>> based on the
>>>>>>> ubuntu lucid config, with relevant modules compiled in (I don't
>>>>>>> use initrd).
>>>>>>>   
>>>>>> Are you sure it's not initrd related ?
>>>>>>
>>>>>> After installing the kernel with dpkg --install i had to run
>>>>>> '# update-initramfs -c -k all' and '# update-grub' manually.
>>>>>> This is not necessary on debian lenny/squeeze and worked
>>>>>> (if I remember correctly) with ubuntu karmic too.
>>>>>> Check in your grub config if there is a initrd entry.
>>>>> Unfortunately this doesn't make a difference. Created initrd for
>>>>> regular and
>>>>> kernel with xenomai; grub config OK. But still the regular kernel
>>>>> works and
>>>>> the other one gives me just a black screen.
>>>> Have you tried removing "quiet" from the kernel command line?
>>> Yes I always do. It somehow hangs before outputting anything. In the
>>> meantime
>>> I have recompiled again with BLK_DEV_INITRD set and running
>>> update-initramfs etc
>>> as Stefan suggested. No effect. When I install this kernel on an
>>> Ubuntu hardy
>>> system it works as expected; on Ubuntu lucid it does not. Could it be
>>> due to
>>> this plymouth crap?
>> (back from holliday) I really like to get my kernel working. I just
>> compiled
>> a kernel 2.6.32.11 with lots of stuff (sound etc) disabled. The
>> regular kernel
>> works fine, with adeos-ipipe-2.6.32.11-x86-2.6-03.patch patch applied
>> it does
>> not work for Ubuntu 10.04 distro (blank screen) but *does work* for
>> Ubuntu 8.04.
>> What could be the cause of this weird problem? It must be something
>> very early
>> in the boot process that's different between the distro versions that
>> makes the
>> kernel work in one environment and not in the other.
> 
> Have you tried multiple times to boot this kernel? On a debian squeeze
> box i had
> the problem with 2.6.32.11 and 2.5.3 that the kernel wanted to start
> only once of 3-5 tries.
> Screen stayed just blank (without quiet) just after booting. Looked like
> a early timing
> problem. I have upgraded this box to 2.6.32.15 and 2.5.4 and the problem
> seems gone.

Probably the same issue as:
https://mail.gna.org/public/adeos-main/2010-05/msg00003.html

Fixed in:
http://git.denx.de/?p=ipipe-2.6.git;a=commit;h=2ddff0f3234fafeac852d1630dbe842d0726db29

-- 
					    Gilles.