[NTLUG:Discuss] Display managers, rhgb and whatever the SuSE equivalent is

[Leroy Tennison]

Chris Cox wrote:
> Leroy Tennison wrote:
>   
>> My understanding of the display managers is that, once they authenticate 
>> the user, they spawn an X session.  I was thinking about this and came 
>>     
>
> Not exactly.  Since the displaymanger needs X already... it doesn't
> have to start one.
>
>   
>> up with a question which also applies to the Red Hat Graphical boot 
>> option and it's SuSE equivalent:  If these programs run prior to X 
>> (which certainly rhgb and SuSE's graphical display do), what are they 
>> using for their graphical display?  How are they figuring out what video 
>> card, mouse and monitor exist and how to present on them?  I could 
>> understand a DM looking at an X configuration but the other environments 
>> have no assurance there there is even an X environment.  Anybody know?
>>     
>
> Your displaymanger uses X.
>
> You can check that... go to vc 1 and do a ps -ef and see if there
> isn't an X process out there when the login panel is up.
>
> Now... the boot screen... which might be graphical... just
> uses the frame buffer AFAIK....  don't confuse the
> bootsplash with the displaymanger though.
>
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>   
Thanks for the reply, I hadn't thought about doing what you suggested.  
I did do so and see what you mean.  I knew the boot splashes were 
different because they run way too early but was curious what they did.