8.04 still locks up

[elmo]

elmo wrote:
> Nils Kassube wrote:
>   
>> elmo wrote:
>>   
>>     
>>> I thought that I finally had a UBUNTU 8.04 that doesn't freeze and
>>> lockup but no, after downloads from different sources, the same old
>>> problem ...it works fine for a up to half hour or so then suddenly, the
>>> cursor locks and there's nothing I do can free it other than turn the
>>> computer off and back on and start over.
>>>
>>> I've tried trial and error combinations of keypresses to loosen up the
>>> cursor....no effect.
>>>     
>>>       
>> First shortcut to try is Ctrl-Alt-Backspace to restart the X server. Then 
>> try Ctrl-Alt-F1 to get a terminal. That way you can find out if your 
>> machine is completely locked or if only your X session is broken. When 
>> you restart the machine, have a look at the logs. Maybe there is some 
>> clue. In /var/log/messages search for the date and time when the problem 
>> happened and in /var/log/Xorg.0.log.old the last lines are a good 
>> candidate for an indication of your problem.
>>
>> Are you using desktop effects? Check if the problem persists if you 
>> disable desktop effects. Sorry, can't tell you how because I don't use it 
>> myself.
>>
>> What graphics hardware do you have? Are you using a proprietary graphics 
>> driver (ATI / Nvidia)?
>>
>>   
>>     
>>> I restart 8.04 and try repeating what I was doing when the freeze
>>> occurred but it doesn't freeze again but it freezes when I'm doing
>>> something completely different.  There's no consistency to the
>>> occurrence of the freeze.
>>>     
>>>       
>> When the freeze happens, do you have a page with flash opened with your 
>> browser?
>>
>>   
>>     
> No, it can happen without the browser, as when editing or just selecting
> a file,
>
>   
>>> Does anybody have 8.04 that doesn't freeze?  What's the secret?
>>>     
>>>       
>> Sure. I know about 15 computers with various hardware combinations (except 
>> there is none with ATI graphics) running 8.04 but I don't know any 
>> machine that freezes. Considering the low number of reports of freezes on 
>> this list I would assume there are _many_ machines working with 8.04 
>> without a problem like yours.
>>
>>
>> Nils
>>
>>   
>>     
> It's possible that my lockup problem is due to some kind of hardware 
> defect but I have no clue as to what
> and how to check.  It's just that all my current operating systems all 
> work so well
>
>
>   
When lockup occurs, there's no point in trying any of the suggested 
shortcuts because the keyboard is dead and I can't type anything. The 
monitor still shows the same display that was there when lockup occurred.

The only thing that still works is pressing the power button to shut 
down the computer.

Then, turning the computer back on, everything works normally until it 
locks up again.