[X2Go-Dev] Different behavior of X2Go Client from Desktop and TCE

[Walid MOGHRABI]

> As I said, it also happens in TCE-Live, though only sometimes. 
> Hooooweveeeerr ... we include code to kill openbox once the NX window 
> comes up, so that the dreaded magic pixel won't trigger. 

> Maybe the act of disabling sometimes happens too soon, and we get a race 
> condition between the xinerama components and the magic-pixel-workaround. 

MagicPixel is not a problem anymore.
I filed a feature request which has been done to add a parameter to disable this behaviour directly at the nx level.
Just add the "-nomagicpixel" option in x2goagent.options

Regards,
Walid Moghrabi

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----- Mail original ----- 

De: "Stefan Baur" <X2Go-ML-1 at baur-itcs.de> 
À: x2go-dev at lists.x2go.org 
Envoyé: Mercredi 16 Mai 2018 15:19:00 
Objet: Re: [X2Go-Dev] Different behavior of X2Go Client from Desktop and TCE 

Am 16.05.2018 um 15:11 schrieb Walid MOGHRABI: 
> This is a known bug I encountered and this is due to the lack of Window Manager. 
> Apparently, the WM is needed to have a good working xinerama. 
> 
> I fixed this by installing OpenBox in my TCE image and added this line : 
> 
> 
> ============================================================================================ 
> --- /usr/sbin/x2gothinclientd 
> +++ /usr/sbin/x2gothinclientd 
> @@ -175,6 +175,9 @@ 
> } 
> } 
> 
> + # Spawn openbox 
> + system("su - x2gothinclient -c \"DISPLAY=:0 openbox &\""); 
> + 
> # set screen background to X2Go default blue on all detected screens 
> `DISPLAY=:0 xsetroot -solid "#246ed8"`; 
> ============================================================================================ 
> 
> I also did a few modifications to /etc/xdg/openbox/rc.xml to disable windows borders and a few stuff ... in fact these are just modifications you can find in the TCE Live Build project. 
> Please find my rc.xml attached. 
> 
> Once you do this, everything works just like on your desktop. 

... or not. 

As I said, it also happens in TCE-Live, though only sometimes. 
Hooooweveeeerr ... we include code to kill openbox once the NX window 
comes up, so that the dreaded magic pixel won't trigger. 

Maybe the act of disabling sometimes happens too soon, and we get a race 
condition between the xinerama components and the magic-pixel-workaround. 

Kind Regards, 
Stefan Baur 

-- 
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Geschäftsführer: Stefan Baur 
Eichenäckerweg 10, 89081 Ulm | Registergericht Ulm, HRB 724364 
Fon/Fax 0731 40 34 66-36/-35 | USt-IdNr.: DE268653243 


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