[ltp] screen remains black after standby on the X40

[Volker Krueger]

HI,

Another observation I had with my X40 was that suddenly I was able to
darken the screen much further than before by pressing the illumination
intensity buttons. Actually the illumination of the screen seemed to
have made a jump to very dark. While I thought that the screen had died
again, I quickly pressed the #brighter# button, and one button press of
the "brighterrr" button was sufficient to but it back to the lowest
normal level which I was used to.

That is not normal either, is it?
Does it give a clue of what is happening?

I have experienced that only once since the upgrade to suse 11.1.

best,
Volker


Volker Krueger wrote:
> Dear all,
>
> thanks for the information so far.
>
> As a matter of fact, I do not use compiz.
>
> I have posted my email also on the suse forum. Let's see what they will
> say about this.
>
> So far I couldn't imagine that a software bug could indeed distroy the
> screen like this...
>
> best,
> Volker
>
>
> Henrique de Moraes Holschuh wrote:
>   
>> On Tue, 10 Mar 2009, Karsten König wrote:
>>   
>>     
>>> A google search does turn up alot about this, for example compiz / general 
>>> composite seems to blame sometimes, I just set it back on and could resume 
>>> fine, don't know about the time it didn't work for me.
>>>     
>>>       
>> Don't get normal "screen doesn't come up on resume" bug reports mixed with
>> "screen harware was destroyed on resume" ;-)  The first class is annoying
>> but expected.  The later is *extremely* grave and has happened at least once
>> in the past.
>>
>>   
>>     
>>> The system itself is not dead, not even the graphics driver it looks like, 
>>> just the screen power or something.
>>> http://forums.fedoraforum.org/showthread.php?t=205270
>>>     
>>>       
>> Yeah, it looks like it does something Bad to the backlight PWM control,
>> since it hits LEDs (inverter-less) and CCFL (inverter-based) boxes alike.
>>
>>   
>>     
>>> Looks like a very confusing issue =(
>>>     
>>>       
>> That it is, that it is...
>>
>>   
>>