[X2Go-User] Segfault on some applications

Thackeray, Neil L neilt at illinois.edu
Fri Nov 4 17:33:16 CET 2016 

I finally found out what the problem was. The Nvidia drivers don't have extensions for remote connections. If I use VirtualGL as a proxy to open a connection I don't have any issues.

vglrun -c proxy firefox will work.

Neil

-----Original Message-----
From: Robert Dinse [mailto:nanook at eskimo.com] 
Sent: Tuesday, October 25, 2016 4:21 PM
To: Thackeray, Neil L <neilt at illinois.edu>
Cc: x2go-user at lists.x2go.org
Subject: Re: [X2Go-User] Segfault on some applications


      Might try re-installing libc on the off chance it was corrupted.

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On Tue, 25 Oct 2016, Thackeray, Neil L wrote:

> Date: Tue, 25 Oct 2016 21:01:37 +0000
> From: "Thackeray, Neil L" <neilt at illinois.edu>
> To: "x2go-user at lists.x2go.org" <x2go-user at lists.x2go.org>
> Subject: Re: [X2Go-User] Segfault on some applications
> 
> This is a list of packages that were upgraded. I wonder if there was a change in libc that is causing the problem?
>
> accountsservice apparmor bamfdaemon compiz compiz-core compiz-gnome 
> compiz-plugins-default cups-browsed  cups-filters 
> cups-filters-core-drivers distro-info-data fuse fwupd 
> gir1.2-dbusmenu-glib-0.4  gnome-calculator gnome-calendar 
> gnome-font-viewer gnome-software gnome-software-common gnome-sudoku  
> gnome-system-monitor grub-common grub-pc grub-pc-bin grub2-common 
> gtk2-engines-murrine ifupdown init  init-system-helpers 
> initramfs-tools initramfs-tools-bin initramfs-tools-core 
> isc-dhcp-client  isc-dhcp-common kbd klibc-utils 
> language-selector-common language-selector-gnome less 
> libaccountsservice0  libapparmor-perl libapparmor1 libappstream-glib8 
> libbamf3-2 libc-bin libc-dev-bin libc6 libc6-dbg libc6-dev
>  libcompizconfig0 libcupsfilters1 libdbusmenu-glib4 libdbusmenu-gtk3-4 
> libdbusmenu-gtk4 libdecoration0
>  libdfu1 libdrm-amdgpu1 libdrm-intel1 libdrm-nouveau2 libdrm-radeon1 
> libdrm2 libegl1-mesa libfontembed1
>  libframe6 libfuse2 libfwupd1 libgbm1 libgl1-mesa-dri libgl1-mesa-glx 
> libglapi-mesa libgweather-3-6  libgweather-common libklibc 
> liblightdm-gobject-1-0 libllvm3.8 libmysqlclient20 
> libnautilus-extension1a
>  libnm-glib-vpn1 libnm-glib4 libnm-gtk-common libnm-gtk0 libnm-util2 
> libnm0 libnma-common libnma0
>  libp11-kit0 libpam-systemd libpoppler-glib8 libpoppler58 libpython3.5 
> libpython3.5-minimal  libpython3.5-stdlib libsystemd0 libudev1 
> libunity-core-6.0-9 libwayland-egl1-mesa libxatracker2  light-themes 
> lightdm linux-firmware locales mtools multiarch-support 
> mysql-client-core-5.7 mysql-common
>  mysql-server-core-5.7 nautilus nautilus-data network-manager 
> network-manager-gnome p11-kit p11-kit-modules  poppler-utils 
> python3-distupgrade python3-update-manager python3.5 python3.5-minimal 
> snapd sudo  suru-icon-theme systemd systemd-sysv ubuntu-artwork 
> ubuntu-core-launcher ubuntu-drivers-common  ubuntu-mobile-icons 
> ubuntu-mono ubuntu-release-upgrader-core ubuntu-release-upgrader-gtk 
> ubuntu-software  udev unity unity-schemas unity-services 
> update-manager update-manager-core vino xdiagnose xserver-xorg-core  
> xserver-xorg-video-intel
>
> -----Original Message-----
> From: Thackeray, Neil L
> Sent: Tuesday, October 25, 2016 3:37 PM
> To: x2go-user at lists.x2go.org
> Subject: RE: [X2Go-User] Segfault on some applications
>
> I wasn't specific enough, it is 16.04.1. I've installed on a test computer as well and the problem replicates. This problem didn't happen until I did an apt-get dist-upgrade today.
>
> Distributor ID:	Ubuntu
> Description:	Ubuntu 16.04.1 LTS
> Release:	16.04
> Codename:	xenial
>
> -----Original Message-----
> From: Robert Dinse [mailto:nanook at eskimo.com]
> Sent: Tuesday, October 25, 2016 2:27 PM
> To: Thackeray, Neil L <neilt at illinois.edu>
> Cc: x2go-user at lists.x2go.org
> Subject: Re: [X2Go-User] Segfault on some applications
>
>
>      I am using 16.04.1 LTS and do not have this problem.  If you are just on 16.04 and not 16.04.1, I would suggest upgrading.  I had a lot of problems with 16.04 as well.  I think it was released a little ahead of being ready for primetime.
>
> -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
> -_-_-_-_-  Eskimo North Linux Friendly Internet Access, Shell 
> Accounts, and Hosting.
>    Knowledgeable human assistance, not telephone trees or script readers.
>  See our web site: http://www.eskimo.com/ (206) 812-0051 or (800) 246-6874.
>
> On Tue, 25 Oct 2016, Thackeray, Neil L wrote:
>
>> Date: Tue, 25 Oct 2016 19:03:26 +0000
>> From: "Thackeray, Neil L" <neilt at illinois.edu>
>> To: "x2go-user at lists.x2go.org" <x2go-user at lists.x2go.org>
>> Subject: [X2Go-User] Segfault on some applications
>>
>> I just upgraded Ubuntu from 14 to 16.04, and I really regret it now. Many things now don't work within X2go. I've completely lost KDE, which I see is a known issue, but for some reason now Firefox and many other applications don't work. I even tried gnome-calculator and it doesn't work now, but LibreOffice does. I'm not sure if it's because of the graphical toolset used or not. The most important app not working for us is Eclipse. All of the applications that don't work function fine with an exported X session, but there is just something in X2go that is keeping it from working.
>>
>> kernel: [12762.555968] firefox[65546]: segfault at 0 ip 
>> 00007f9d91f649bf sp 00007ffecd72a238 error 4 in 
>> libc-2.23.so[7f9d91ecf000+1bf000]
>> kernel: [12762.572675] crashreporter[65553]: segfault at 0 ip 
>> 00007f4bf9c009bf sp 00007ffe73a9d248 error 4 in 
>> libc-2.23.so[7f4bf9b6b000+1bf000]
>>
>> kernel: [12787.466816] [UFW BLOCK] IN=eth0 OUT=
>> MAC=01:00:5e:00:00:01:00:25:00:ef:46:fb:08:00 SRC=128.174.227.254
>> DST=224.0.0.1 LEN=44 TOS=0x00 PREC=0x00 TTL=1 ID=63656 PROTO=UDP
>> SPT=52742 DPT=8612 LEN=24
>> kernel: [12800.095585] gnome-calculato[65714]: segfault at 0 ip 
>> 00007fcfab8999bf sp 00007ffd744e1ff8 error 4 in 
>> libc-2.23.so[7fcfab804000+1bf000]
>>
>> kernel: [13492.855643] eclipse[68620]: segfault at 0 ip 
>> 00007f4bca47c9bf sp 00007ffd8d26b2b8 error 4 in 
>> libc-2.23.so[7f4bca3e7000+1bf000]
>>
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