[X2Go-User] X2Go server, nxagent causes segfault
Kalle Tuulos
kalle at tuulos.org
Tue Mar 20 08:34:02 CET 2018
Hello
I just upgraded my Ubuntu setup with a normal apt-get upgrade and
nx-agent version 2:3.5.99.16-0~201803162252~ubuntu16.04.1 was installed.
The segfault problem went away, X2Go works again "as specified".
BR,
Kalle
Norman Gaywood kirjoitti 13.3.2018 klo 6:43:
> I've got several users reporting seg faults in nxagent
>
> Mine occur when moving my x2goclient window from one screen to
> another. Simple resizing seems OK.
>
> Not sure if this is the same for all my users though.
>
> Seems to be happening after these updates:
>
> nxproxy-3.5.99.15-0.0build1.1.git20180308.2971.main.fc27.x86_64 Mon 12
> Mar 2018 09:14:38 AEDT
> nxagent-3.5.99.15-0.0build1.1.git20180308.2971.main.fc27.x86_64 Mon 12
> Mar 2018 09:14:38 AEDT
> libXcompshad3-3.5.99.15-0.0build1.1.git20180308.2971.main.fc27.x86_64
> Mon 12 Mar 2018 09:14:37 AEDT
> libXcomp3-3.5.99.15-0.0build1.1.git20180308.2971.main.fc27.x86_64 Mon
> 12 Mar 2018 09:14:36 AEDT
> libNX_X11-6-3.5.99.15-0.0build1.1.git20180308.2971.main.fc27.x86_64
> Mon 12 Mar 2018 09:14:36 AEDT
> nx-libs-3.5.99.15-0.0build1.1.git20180308.2971.main.fc27.x86_64 Mon 12
> Mar 2018 09:14:35 AEDT
>
> It does not seem to be possible to roll back.
>
>
>
> On Tue, 13 Mar 2018 at 15:02, Norman Gaywood <ngaywood at une.edu.au
> <mailto:ngaywood at une.edu.au>> wrote:
>
> I'm thinking it may be the latest update to libNX_X11 (a few days
> ago)
>
> But the x2go repo does not contain old versions, so I can't test
> the downgrade.
>
> Anyone know how to downgrade?
> rpm -q libNX_X11-6
> libNX_X11-6-3.5.99.15-0.0build1.1.git20180308.2971.main.fc27.x86_64
>
> dnf downgrade libNX_X11-6
> Last metadata expiration check: 0:00:00 ago on Tue 13 Mar 2018
> 15:01:38 AEDT.
> Package libNX_X11-6 of lowest version already installed, cannot
> downgrade it.
> Error: No packages marked for downgrade.
>
>
>
>
> On Tue, 13 Mar 2018 at 14:44, Norman Gaywood <ngaywood at une.edu.au
> <mailto:ngaywood at une.edu.au>> wrote:
>
> I'm getting this on Fedora 27 (XFCE) as well.
>
> x2goserver-4.1.0.0-0.0x2go1.1.git20180302.1517.main.fc27.x86_64
>
> I notice that if you don't resize or move the x2go client
> window it stays stable (does not segfault).
>
>
> On Mon, 12 Mar 2018 at 22:35, Kalle Tuulos <kalle at tuulos.net
> <mailto:kalle at tuulos.net>> wrote:
>
> Hello
>
> I'm using X2Go server in several computers, all running
> Ubuntu. Just today, one of my computers (headless Linux
> box) just froze and I had to give it a power cycle reset.
> After powering up again, I can't any more connect to X2Go.
>
> I'm getting following into /var/log/syslog:
> ---8<---8<---
> Mar 12 13:15:40 kallebuntu systemd[1]: Started Session 10
> of user ktuulos.
> Mar 12 13:15:49 kallebuntu
> /usr/sbin/x2gocleansessions[1091]:
> ktuulos-50-1520853345_stDLXDE_dp32: state file for this
> session does not exist:
> /tmp/.x2go-ktuulos/C-ktuulos-50-1520853345_stDLXDE_dp32/state
> (this can be ignored during session startups)
> Mar 12 13:15:51 kallebuntu /usr/bin/x2gostartagent:
> successfully started X2Go Agent session with ID
> ktuulos-50-1520853345_stDLXDE_dp32
> Mar 12 13:15:58 kallebuntu kernel: [ 1315.845394]
> nxagent[9647]: segfault at 8 ip 000056286f70db3a sp
> 00007ffea2bd1bc0 error 4 in nxagent[56286f693000+432000]
> Mar 12 13:16:04 kallebuntu /usr/bin/x2gosetkeyboard:
> Setting X keyboard according to
> /home/ktuulos/.x2go/C-ktuulos-50-1520853345_stDLXDE_dp32/keyboard
> Mar 12 13:16:05 kallebuntu /usr/bin/x2goruncommand:
> launching session with Xsession-x2go mechanism, using
> STARTUP="startlxde"
> Mar 12 13:16:05 kallebuntu /usr/bin/x2goruncommand: dbus
> wrapper available as /usr/bin/dbus-run-session
> ---8<---8<---
>
> This computer is running Ubuntu 16.04. X2go server has
> been installed using the ppa method.
> ---8<---8<---
> ktuulos at kallebuntu:~$ uname -a
> Linux kallebuntu 4.13.0-36-generic #40~16.04.1-Ubuntu SMP
> Fri Feb 16 23:25:58 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
> ktuulos at kallebuntu:~$ dpkg -s x2goserver | grep Version
> Version: 4.1.0.0-0~1517~ubuntu16.04.1
> ktuulos at kallebuntu:~$ cat
> /etc/apt/sources.list.d/x2go-ubuntu-stable-xenial.list
> deb http://ppa.launchpad.net/x2go/stable/ubuntu xenial main
> # deb-src http://ppa.launchpad.net/x2go/stable/ubuntu
> xenial main
> ---8<---8<---
>
> There seem to be no hardware problems - I installed mcelog
> and I'm now monitoring its output. Nothing.
>
> Could anyone give some hints? I have spent the last hour
> googling about "nxagent segfault", but I haven't found
> anything, which would help.
>
> Thanks,
> Kalle
>
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>
>
> --
> Norman Gaywood, Computer Systems Officer
> School of Science and Technology
> University of New England
> Armidale NSW 2351, Australia
>
> ngaywood at une.edu.au <mailto:ngaywood at une.edu.au>
> http://turing.une.edu.au/~ngaywood
> <http://turing.une.edu.au/%7Engaywood>
> Phone: +61 (0)2 6773 2412 Mobile: +61 (0)4 7862 0062
>
> Please avoid sending me Word or Power Point attachments.
> See http://www.gnu.org/philosophy/no-word-attachments.html
>
>
>
> --
> Norman Gaywood, Computer Systems Officer
> School of Science and Technology
> University of New England
> Armidale NSW 2351, Australia
>
> ngaywood at une.edu.au <mailto:ngaywood at une.edu.au>
> http://turing.une.edu.au/~ngaywood
> <http://turing.une.edu.au/%7Engaywood>
> Phone: +61 (0)2 6773 2412 Mobile: +61 (0)4 7862 0062
>
> Please avoid sending me Word or Power Point attachments.
> See http://www.gnu.org/philosophy/no-word-attachments.html
>
>
>
> --
> Norman Gaywood, Computer Systems Officer
> School of Science and Technology
> University of New England
> Armidale NSW 2351, Australia
>
> ngaywood at une.edu.au <mailto:ngaywood at une.edu.au>
> http://turing.une.edu.au/~ngaywood <http://turing.une.edu.au/%7Engaywood>
> Phone: +61 (0)2 6773 2412 Mobile: +61 (0)4 7862 0062
>
> Please avoid sending me Word or Power Point attachments.
> See http://www.gnu.org/philosophy/no-word-attachments.html
>
>
> _______________________________________________
> x2go-user mailing list
> x2go-user at lists.x2go.org
> https://lists.x2go.org/listinfo/x2go-user
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