X2Go Bug report logs - #797
xinamera extension is broken after update

version graph

Package: x2goclient; Maintainer for x2goclient is X2Go Developers <x2go-dev@lists.x2go.org>; Source for x2goclient is src:x2goclient.

Reported by: Robert Reich <robert_reich@yahoo.de>

Date: Tue, 24 Feb 2015 16:50:01 UTC

Severity: normal

Tags: pending

Found in version 4.0.3.2-0~800~ubuntu14.04.1

Fixed in version 4.0.4.0

Done: X2Go Release Manager <git-admin@x2go.org>

Bug is archived. No further changes may be made.

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Subject: Bug#797: xinamera extension is broken after update
Reply-To: Fernando Pedemonte <fpedemonte@sintys.gob.ar>, 797@bugs.x2go.org
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Date: Thu, 12 Mar 2015 18:42:07 -0300 (ART)
From: Fernando Pedemonte <fpedemonte@sintys.gob.ar>
To: 797@bugs.x2go.org
Cc: cbourlot <cbourlot@sintys.gob.ar>
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Thread-Topic: xinamera extension is broken after update
Thread-Index: So8gu2LLxq53lV82g+MHyaLg8rDQMg==
Hi all,

I was having this problem also, and after some debugging I was able to trace the problem to a function in the file onmainwindow.cpp at the x2goclient package.

Enabling the debug on the client I saw at the step of creating the xinerama.conf file inside $HOME/.x2go/xxxxxx/ directory the following:

x2go-DEBUG-../sshmasterconnection.cpp:1469> executing remote: "sh -c 'echo X2GODATABEGIN:38317d7e-972d-417f-9745-ef9cb09d7e35; PATH=/usr/local/bin:/usr/bin:/bin export DISPLAY=:50;printf '1600 0 1600 900\\n0 0 1600 900' >  $HOME/.x2go/C-fpedemonte-50-1426195616_stDXFCE_dp24/xinerama.conf; echo X2GODATAEND:38317d7e-972d-417f-9745-ef9cb09d7e35;'"

As you can see, the "\n" is not escaped correctly. What I did was to modify the following line of code inside onmainwindow.cpp line 10212

        QString cmd="export DISPLAY=:"+resumingSession.display+";printf '"+screens.join("\\\\n")+"' >  $HOME/.x2go/C-"+
                    resumingSession.sessionId+"/xinerama.conf";

To:

        QString cmd="export DISPLAY=:"+resumingSession.display+";printf \""+screens.join("\\n")+"\" >  $HOME/.x2go/C-"+
                    resumingSession.sessionId+"/xinerama.conf";

After this modification, xinerama is working again.
Take note that I also replaced the single quote by double quote and escaped them. Without this modification the printf command was failing to create the xinerama.conf file.

Thanks for this excelent piece of software

Best Regards

Fernando D. Pedemonte
Seguridad Inform谩tica
SINTyS
Sistema de Identificaci贸n Nacional Tributario y Social
Consejo Nacional de Coordinaci贸n de Pol铆ticas Sociales
Presidencia de la Naci贸n
Julio A. Roca 782- Piso 5
Ciudad Aut贸noma de Bs. As.
Tel: (54 11) 43708778 int.8788
fpedemonte@sintys.gov.ar

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