Stefan:

Thanks for your prompt reply.  I was running a full Xfce4 desktop in an X2go client session and running firefox from there to create the error.

Interestingly enough, the "published application" mode actually works fine.  Never used this feature before with X2go.  For some reason firefox doesn't crash this way.

The --ProfileManager and --safe-mode options don't have any different results with full Xfce4 desktop in a x2go session, Firefox still crashes shortly after start up.  Interesting thing is it will stay running until you move the mouse in the session (or type something), it will then crash.  If mouse isn't hovering in the firefox window on the desktop session when you move it doesn't crash until you move it over the firefox window.

Tested it with x2go session running twm and it doesn't crash there.  Seems like its specific to Xfce4 only, but it does work fine on the server's local X console running Xfce4.

Guess I will put a post on the x2go-dev list on this issue.

Thanks,

Rett Walters
 
On 04/26/2016 03:33 AM, Stefan Baur wrote:
Hi Rett,

I decided to test this on:
Debian Jessie (x64) - Server
Windows 7 (x64) - Client

TL;DR: Works just fine here, so maybe an archlinux issue, rather than an
X2Go issue?

Here's the list of packages and versions I used:
ii  x2go-keyring
2012.07.23~jessie~main~17~b all                         GnuPG keys of
all X2Go developers and the X2Go archive
ii  x2goagent
2:3.5.0.32-0x2go1+git201601 all                         X2Go agent
ii  x2goclient
4.0.5.1-0x2go1+git20160324. amd64                       X2Go Client
application (Qt4)
ii  x2goserver
4.0.1.19-0x2go2+git20160126 amd64                       X2Go server
daemon scripts
ii  x2goserver-extensions
4.0.1.19-0x2go2+git20160126 all                         X2Go server
daemon scripts (extensions)
ii  x2goserver-xsession
4.0.1.19-0x2go2+git20160126 all                         X2Go server
daemon scripts (Xsession runner)
ii  nx-x11-common
2:3.5.0.32-0x2go1+git201601 all                         nx-X11 (common
files)
ii  nxagent
2:3.5.0.32-0x2go1+git201601 amd64                       NX agent
ii  nxproxy
2:3.5.0.32-0x2go1+git201601 amd64                       NX proxy
ii  firefox-esr                                  45.0.2esr-1~bpo80+1
    amd64                       Mozilla Firefox web browser
ii  firefox-esr-l10n-de                          45.0.2esr-1~bpo80+1
    all                         German language package for Firefox

On the client side, I'm still using X2GoClient 4.0.5.0.

To narrow down the issue, you might want to try:

firefox --safe-mode # disables plugins and extensions

and/or

firefox --ProfileManager # create a new Firefox profile there, use that

Also, I have tested this using published application mode.  Which mode
were you using?  Fullscreen maybe?

If the problem persist, please do subscribe to x2go-dev and file a bug,
as described here:

http://wiki.x2go.org/doku.php/wiki:bugs#reporting_bugs

Kind Regards,
Stefan Baur

Am 26.04.2016 um 04:07 schrieb Rett D. Walters:

Hello:

I have been using x2go for a couple of years now (great product), and I
have run into an issue with the latest firefox 45.0.2 (archlinux x64) in
the last week or so.  Firefox opens for a few seconds then crashes. 
Running from a bash prompt results in the following output:

[15311] ###!!! ABORT: Request 131.45: BadRequest (invalid request code
or no such operation): file
/build/firefox/src/firefox-45.0.2/toolkit/xre/nsX11ErrorHandler.cpp,
line 157
[15311] ###!!! ABORT: Request 131.45: BadRequest (invalid request code
or no such operation): file
/build/firefox/src/firefox-45.0.2/toolkit/xre/nsX11ErrorHandler.cpp,
line 157
Segmentation fault (core dumped)


The x2go client is archlinux x64, running plasma 5/Kde with latest
packages.  x2go client version is: 4.0.5.1-1, xorg-server is 1.18.3-1.

The x2go server is also archlinux x64, running Xfce4, with latest
packages.  x2go-agent is 3.5.0.32-2, x2goserver is 4.0.1.19-3.
xorg-server is 1.18.3-1.

When run on the console of the machine that I am using x2go-client to
access, Firefox runs fine under Xfce4 and xwm.  The latest Thunderbird
works on console and on X2Go. Problem seems to be specifc to firefox
45.0.2 and running it in an X2Go session. Firefox 45.0.1 ran fine with
X2Go, backleveling will be difficult as other libs will have to be
rolled back as well.  Google-Chrome works fine with X2go also.

Is anyone else having this issue, or have any ideas on how to address this?

Thanks,

Rett Walters



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