screensaver freezes system totally

[Frans Ketelaars]

On Sat, 10 Jul 2010 10:45:20 +0100, pete wrote:

> On 07/07/10 14:56, A. Kromic wrote:
>> On 05/07/10 13:25, pete wrote:
>>> ...
>>>
>>> Namely when the screen-saver has been running for about 20mins it
>>> freezes completely, and becomes totally unresponsive, only thing left
>>> is a hard reset!
>>>
>>> ...
>>>
>>>
>> I have experienced a similar problem, it's 10.04 AMD64, an I use Compiz
>> and screensaver was 3D; however, my GPU is Intel's. It doesn't really
>> lock the whole system, just the screen, and even like that, windows
>> temporarily showed when I used Alt+Tab. They wouldn't stay, but it was
>> enough to bring up a terminal window and blindly pkill the
>> screensaver...
>>
>> Best regards,
>> A. Kromic
>>
> Hi,
> 
> This problem has reared it head again, his machine only had 'wobbly
> windows' activated. good news this time i was there to check the logs!
> 
> the system log said it was running 'cron' as root then it stated that
> 'no one cares, try booting without irq module' prior to freeze up.

Please post the exact error messages.

I guess it's something more like this:

http://www.linuxquestions.org/questions/linux-hardware-18/irq-22-nobody-cared-662916/

[51694.430013] irq 22: nobody cared (try booting with the "irqpoll" 
option)

> All of which means nothing except that we do care!

I think the kernel means no driver cared to service the interrupt.
 
I'm sure you care :)

Use "cat /proc/interrupts" to see what the interrupt number refers to.

> a brief bit of
> googleing only digs up posts from 2001 / 2002 and are far to technical
> for me to follow!
> 
> so my question is this why has this old (?) problem resurfaced now and
> only on his machine, would following such an outdated solution work on
> newer versions?
> 
> any help at all we would be grateful!
> 
> Pete

Good luck!

    -Frans