X2Go Bug report logs - #1132
Color issue with x2go not present in NX with certain applications

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

Reported by: "Town, Brian A. (GSFC-428.0)[Embedded Flight Systems, Inc]" <brian.a.town@nasa.gov>

Date: Mon, 9 Jan 2017 14:30:01 UTC

Severity: normal

Found in version 4.0.5.2

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Subject: Bug#1132: [X2Go-Dev] Bug#1132: Bug#1132: Color issue with x2go not present in NX with certain applications
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From: Ulrich Sibiller <ulrich.sibiller@gmail.com>
Date: Tue, 10 Jan 2017 15:34:20 +0100
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To: "Town, Brian A. (GSFC-428.0)[Embedded Flight Systems, Inc]" <brian.a.town@nasa.gov>, 1132@bugs.x2go.org
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On Mon, Jan 9, 2017 at 5:58 PM, Town, Brian A. (GSFC-428.0)[Embedded
Flight Systems, Inc] <brian.a.town@nasa.gov> wrote:
> Darn was hoping to have won the prize! Haha
>
> I have tested a few different compression/slider options but still going through and see what each option gives me in. The software being used is open source for NASA missions I believe but closed outside of that, so not sure what all I can share on that just yet, I'll have to check.
>
> I did notice that selecting the "local desktop" option via the client on x2go provides me with the correct color, however it also produces a great deal of lag. Is the local desktop option doing basic VNC connection or Xforwarding? I couldn't find any information on that.
>
> I'm utilizing x2go in conjunction with a LTSP set up. If I use basic Xforwarding through the terminal I get the colors I need displayed properly. I'm not sure exactly where it's hanging up through the x2go client window.
>
> For the unix_kde_depth option, is there a setting to have it exceed 24? Some blogs I've noticed people their session.log files showing unix_kde_depth32 however mine is always at 24 and unsure where that setting would be located at.


Color issues might have to do with the rgb file not being found (or
being incomplete). IIRC we have fixed something in the coming 3.6.x
release in this regard. Please test if the problem persists with
current nx beta,
http://wiki.x2go.org/doku.php/doc:howto:nx-libs-betatesting.

You could also check if one of these rgb files exist (add .txt
extension). They are searched in this order:

static char* nxAltRgbPaths[] = {"/etc/x2go/rgb", \
                                "/usr/share/x2go/rgb", \
                                "/usr/local/share/x2go/rgb", \
                                "/etc/nxagent/rgb", \
                                "/usr/share/nx/rgb", \
                                "/usr/local/share/nx/rgb", \
                                "/usr/NX/share/rgb", \
                                "/usr/share/X11/rgb", \
                                "/etc/X11/rgb"};


So if you find one compare it to the one you real X server is using
(should be visible in /var/log/Xorg.0.log).

Or maybe, instead of checking all this: simply copy the rgb.txt from
your X server to /etc/x2go/rgb.txt and retry.


Uli

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