Re: [Xenomai-help] Problem of freeze

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

Philippe Gerum wrote:
> On Thu, 2009-05-07 at 14:47 +0200, Raistlin wrote:
>> On Thu, 2009-05-07 at 14:37 +0200, Gilles Chanteperdrix wrote:
>>>> As usual, please send us /proc/interrupts, /proc/xenomai/irq, your
>>>> .config, and the version of the I-pipe patch you use.
>>>>
>> I will.
>>
>>>> Run the latency and switchtest tests, and tell us if you have the freeze
>>>> with them too.
>> It has happened once during a test (latency I think), but I've also been
>> (next times, after reboot) able to run both of them without any issue.
>>
>> Anyway, as soon as I reboot I'll run all the tests again.
>>
>>> Also, Benoit's problem was not in fact due to xenomai but to gnome power
>>> management. 
>> I see... Well, of course, all is possible... I'm using
>> gnome-power-manager too, but while running plain Ubuntu kernel no freeze
>> happens, but... I mean... Who knows?!?!
> 
> The point is not about blaming Gnome PM, but we do know for sure that
> power management related drivers may have adverse effects on a
> Xenomai-patched kernel - see the troubleshooting guide. If your kernel
> enable those, and Gnome PM triggers actions on those such as CPU freq
> governors, bad things may happen.
> 
> You .config will confirm or not whether this assumption is correct.

The problem could also be that gnome-power-management is trying to use
services from the kernel which are not available because power
management is disabled in kernel configuration.

-- 
                                                 Gilles.