# Graphics related segfaults possibly solved

**URL:** <https://community.freefem.org/t/graphics-related-segfaults-possibly-solved/2584>\
**Category:** General Discussion\
**Created:** [July 5, 2023, 11:13pm UTC](https://community.freefem.org/t/graphics-related-segfaults-possibly-solved/2584 "2023-07-05T23:13:28Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![marchywka](https://avatars.discourse-cdn.com/v4/letter/m/ee59a6/32.png) [@marchywka](https://community.freefem.org/u/marchywka)\
**Post date:** [July 5, 2023, 11:13pm UTC](https://community.freefem.org/t/graphics-related-segfaults-possibly-solved/2584/1 "2023-07-05T23:13:28Z")

</div>

I’d seen some other reports of segfaults when plotting FF data.

On my earlier Ubuntu Beaver install I had sporadic graphics failures and  
now with Focal some things reliably created segfaults like “fill=1” in plot.  
Earlier I had posted a stack trace but hadn’t bothered to track it down  
due to more interest in my own general purpose viewer ( “datascope”).  
However, it recently go so bad I couldn’t work on my phse boundary plots  
and even “vlc” failed although for viewing my own movies apparently  
“mpv” still worked.

In my case the issue was the mesa drivers… Building them to a local  
directory to avoid pollution and exporting the following,

```auto
marchywka@happy:/home/documents/cpp/proj/datascope$ export LIBGL_DRIVERS_PATH=/home/ubuntu/dev/mesa/mesa-20.3.5/build/lib/x86_64-linux-gnu/dri

```

appears to stop failures in vlc and in the reliable FreeFEM failures.

I’m not sure it works for everyone but initial results have been completely successful.

Let me know if this works or not. Building mesa required I go get a lot of  
stuff but once installed in a sandbox the one export seems to work.,