due to compositing, probably ... Re: KDE 4.3 freezes too often now

[Nikos Chantziaras]

On 08/17/2009 08:33 PM, Anne Wilson wrote:
> On Monday 17 August 2009 17:04:52 Nikos Chantziaras wrote:
>> On 08/17/2009 06:55 PM, Anne Wilson wrote:
>>> On Monday 17 August 2009 15:43:39 Guido Pinkernell wrote:
>>>>> How about
>>>>> "Raising Elephants"?:
>>>>> http://en.wikipedia.org/wiki/Magic_SysRq_key#.22Raising_Elephants.22_mn
>>>>> em on ic_device
>>>>
>>>> Yes. Thanks a lot, Dotan. I didn't know about this. Very useful indeed!
>>>
>>> So how do you use that, if, as you say, the keyboard doesn't respond?
>>
>> SysRq is hardwired into the kernel.  If the kernel didn't panic, SysRq
>> still works even if X stopped processing keyboard events.  And from the
>> sound of it, the kernel did not panic in this case since the mouse still
>> moves, so the kernel must be running.
>>
> Interesting, because (some months back) I have been in the same situation and
> tried the SysRq 'magic keys', just in case, but without success.

It must be enabled in the kernel configuration.  If the file 
"/proc/sysrq-trigger" doesn't exist, you don't have it enabled.

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