X2Go Bug report logs - #1172
ThunderBird crashes in PubApp mode on amd64

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Subject: Bug#1172: [X2Go-Dev] Bug#1172: Bug#1172: ThunderBird crashes in PubApp mode on amd64
Reply-To: Walid MOGHRABI <w.moghrabi@servicemagic.eu>, 1172@bugs.x2go.org
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Date: Wed, 10 May 2017 09:26:14 +0200 (CEST)
From: Walid MOGHRABI <w.moghrabi@servicemagic.eu>
To: 1172@bugs.x2go.org
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> It is not "unusable". But nx offers an old version of GLX only. And 
> there seem to be some applications that don't care for the version the 
> X server (nxagent in this case) reports. So what should we do? 

You're right, I'm probably a bit to0 rude with this but it's far too old and most applications just test if GLX is enabled without testing it's version or correct support for each extensions which leads to crashes at times.
Since there is no gain in keeping it "as is" (at least, I did see more problems than gains) and until GLX support is updated through Lib-NX, I personnaly would recommend disabling GLX by default (which let the possibility to the user to activate it if he really needs it but don't make this the default behaviour).
Since applications are checking if GLX is enabled, disabling it force them to fallback on software renderers only (or don't run at all but I prefer that to crashes for unknown reasons).


> It is possible to implement a newer GLX version but that would need 
> some investing quite some time. Unfortunately the current nx 
> development staff does not have that time... 

I know and I upvote for that as top priority since more and more applications needs this.


Regards,
Walid Moghrabi

TRAVAUX.COM
BAT I - PARC CEZANNE 2 290 AVENUE GALILEE - CS 80403
13591 AIX EN PROVENCE CEDEX 3

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

De: "Ulrich Sibiller" <uli42@gmx.de> 
À: "Walid MOGHRABI" <w.moghrabi@servicemagic.eu>, 1172@bugs.x2go.org 
Envoyé: Vendredi 5 Mai 2017 21:41:47 
Objet: Re: [X2Go-Dev] Bug#1172: Bug#1172: ThunderBird crashes in PubApp mode on amd64 

On Fri, May 5, 2017 at 5:33 PM, Walid MOGHRABI 
<w.moghrabi@servicemagic.eu> wrote: 
> I would recommend disabling GLX by uncommenting this line in /etc/x2go/x2goagent.options : 
> 
> #X2GO_NXAGENT_DEFAULT_OPTIONS+=" -extension GLX" 
> 
> GLX is unusable with the current NX-Libs (even Arctica ones) but since the extension is enabled, some components still tries to use H/W acceleration for some parts. 
> I get far better results (especially stability wise) with this option disabled. 
> 
> I would even consider disabling it "by default" until a proper GLX support is added to nx-libs. 

It is not "unusable". But nx offers an old version of GLX only. And 
there seem to be some applications that don't care for the version the 
X server (nxagent in this case) reports. So what should we do? 

It is possible to implement a newer GLX version but that would need 
some investing quite some time. Unfortunately the current nx 
development staff does not have that time... 


Regarding Thunderbird: does it still crash after setting 
gfx.xrender.enabled to true in about:config (respectively user.js)? 

Uli
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