screen (intel igp) goes black after logout when using xauth

[StompDagger1@yahoo.com]

>From: walter harms <wharms at bfs.de>

>To: xorg at lists.x.org 
>Sent: Sunday, August 25, 2013 4:50 PM
>Subject: Re: screen (intel igp) goes black after logout when using xauth
 
>
>Hi,
>i still have no idea.
>But perhaps you can reduced your Programm to  make the xauth stuff only
>to get an idea if that has anything to do with the problem.
>
>(I assume that only your programm is causing the problem, others work fine).
>
>re.
> wh
>
>Am 25.08.2013 07:50, schrieb StompDagger1 at yahoo.com:
>>> From: "StompDagger1 at yahoo.com" <stompdagger1 at yahoo.com>
>> 
>>> To: "xorg at lists.freedesktop.org" <xorg at lists.freedesktop.org> 
>>> Sent: Sunday, August 18, 2013 10:01 AM
>>> Subject: screen (intel igp) goes black after logout when using xauth
>>  
>> 
>> 
>>> Hello, 
>> 
>>> I have the following scenario: 
>> 
>>     * a framework that runs a gui program. 
>> 
>>     * group a that all the included users can use that framework 
>>> in an essence, user x from group a can execute program a1. program a1 
>> uses sudo to run another program as user a_x which runs a gui program. 
>>> as the executing user isn't user a_x, I need to use xauth to extract the
>>  session's X cookie to be able to connect to the X session, after the 
>> program is done, I remove the X session from the >X cookie using xauth. 
>> 
>>> this works well when I start the program but when I shut it down and logout, the screen stays black. 
>> 
>>> this started when I replaced the previous card (ati, worked without problems) with the intel igp. 
>> 
>>> any ideas? the logs doesn't show any error.
>> 
>>> I'm using kernel 3.10.7 with mesa from git, inter driver version 2.21.14 on a i7-2600 with 16 gb of ram.
>> 
>>> thanks for the help.
>> 
>> no one have an idea in the matter?
>> 

greetings, thanks for the input, will try it.

something popped into mind. I use a hdmi to dvi cable, can that be the issue? e.g. there is some feedback that is needed when connecting to hdmi that dvi doesn't supports?
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