Thanks for the follow-up.

I am not sure re; EL9 and testing against X11/Wayland.

There are some kernel logs showing where the segfault and kernel traps
occur and also some gdb crashdump analyses with stacks shown at the github
link below.  The crashes I saw were all in the desktop components and not
in x2goagent/nxagent.

Tom.


On Sat, 29 Apr 2023, Ulrich Sibiller wrote:

> Most probable all those desktops require features that are not offered by NX. We have seen many cases where they do not correctly check what versions of x server extensions are available and assume higher versions. I am not sure but maybe EL9 apps are only tested
> against Wayland and not longer X11?
> Do you have more details when they crash? Will the DEs crash or the x2goagent/nxagent?
>
> Uli
>
>
>
> Tom Crane <TPCx2go@mklab.ph.rhul.ac.uk> schrieb am Fr., 28. Apr. 2023, 21:01:
>       I originally submitted a detailed bug report at the Mate Desktop issues
>       Github page here https://github.com/mate-desktop/mate-desktop/issues/553.
>
>       I subsequently discovered that other desktops are similarly affected. All
>       of them experienced segfaults or kernel traps in parts of their
>       components, particularly in the Marco window manager that Mate uses.
>
>       I have also tried Gnome, Kde, xfce, Cinnamon & Icewm desktops, again on a
>       Centos Stream 9 system.  Similar results were found on an Alma 9 system so
>       I do not believe the problem is specific to the 'upstream' / lesser-tested
>       nature of CS9.
>
>       Apart from Icewm which remained usable even with the segfaults, the other
>       desktops (particularly Mate which we use a lot for remote working) are
>       rendered unusable by this problem.  None of our Centos 7 systems have this
>       problem.
>
>       I am running out of ideas to diagnose/fix this problem.
>
>       Any thoughts?
>
>       Thanks
>       Tom Crane
>
>       X2go etc. packages version details (as installed from Epel 9 repository),
>               nxagent-3.5.99.26-6.el9.x86_64
>               nx-libs-3.5.99.26-6.el9.x86_64
>               x2goagent-4.1.0.3-17.el9.x86_64
>               x2goserver-4.1.0.3-17.el9.x86_64
>               x2goserver-common-4.1.0.3-17.el9.noarch
>               x2goserver-xsession-4.1.0.3-17.el9.noarch
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>
>
>