What's also interesting is that if I x2go into a host that does not have cuda installed, and then:

   ssh -Y cudahost glxinfo

then the nxagent on the non-cuda host segfaults.

This happens with glxinfo and when trying to start firefox. google-chrome works fine.

This was all working fine until I updated cuda and the GPU driver. On Centos 7.9.2009

This happens on a host with a K80 GPU and another host that has a V100 GPU.

I also have cuda-11.4 on a Fedora 34 host with a V100 GPU.

If I x2go (or ssh -Y) to the Fedora 34 host, glxinfo (and firefox) run fine.

nxagent-3.5.99.26-1.fc34.x86_64
x2goserver-4.1.0.3-10.fc34.x86_64
cuda-11.4.0-1.x86_64

kmod-nvidia-latest-dkms-3:465.19.01-1.fc33.x86_64

Any suggestions on how I might provide some debugging information to the developers?

 abrt-cli list --since 1626070479
id 35db2c461122be7229abdbe219ddfd92d0613da8
reason:         nxagent killed by SIGSEGV
time:           Mon 05 Jul 2021 09:37:02 AEST
cmdline:        x2goagent -nolisten tcp -nolisten tcp -dpi 97 -D -auth /home/ngaywood/.Xauthority -geometry 2560x1440 -name X2GO-ngaywood-50-1625441817_stDMATE_dp24 :50
package:        nxagent-3.5.99.26-1.el7
uid:            5125 (ngaywood)
count:          21
Directory:      /var/spool/abrt/ccpp-2021-07-05-09:37:02-2523