[GNC] Crash on attempting to print invoice? (Linux)

[John Ralls]

Simon,

Makes sense that it would have to do with Nvidia drivers. EGL (https://en.wikipedia.org/wiki/EGL_(API)) is how the Open GL (3D rendering engine) talks to your graphics card.

Regards,
John Ralls


> On Jul 21, 2025, at 11:14, Simon Roberts <simon at dancingcloudservices.com> wrote:
> 
> With apologies, I gave up my own attempts to fix this and came here for
> help just a little too soon.
> 
> It turns out that there were updates to the NVIDIA drivers, and somehow,
> despite the updates not saying "reboot needed", those needed me to reboot
> the system. Now that I've done so, it's working again.
> 
> Cheers,
> Simon
> 
> 
> On Mon, Jul 21, 2025 at 11:09 AM Simon Roberts <
> simon at dancingcloudservices.com <mailto:simon at dancingcloudservices.com>> wrote:
> 
>> Hi all, I'm using GNC 5.5 on Ubuntu 22.04 and it's worked fine since I
>> built it, but for some reason today I'm not able to print an invoice.
>> 
>> The invoice is created and posted, but when I hit the "Print Invoice"
>> button, the program crashes out (leaving the lock file in place). I ran it
>> from the command line and it issues an error message that I hoped might
>> tell me something, but google doesn't bring anything up. The error is:
>> 
>> Could not create GBM EGL display: EGL_NOT_INITIALIZED. Aborting...
>> 
>> It core dumps right after this.
>> 
>> You can probably guess from the age of my OS and the build that I'm not in
>> the habit of updating things for the sake of it, and I'd prefer to avoid
>> changing the installation if I can avoid it, but clearly something has
>> changed (and I think it must be in my Linux system). Can anyone suggest
>> what might have happened?
>> 
>> TIA,
>> Simon
>> 
>> 
>> --
>> Simon Roberts
>> 303 249 3613
>> https://www.youtube.com/@DancingCloudServices
>> https://www.linkedin.com/in/simonhgroberts/
>> 
>> 
> 
> -- 
> Simon Roberts
> 303 249 3613
> https://www.youtube.com/@DancingCloudServices
> https://www.linkedin.com/in/simonhgroberts/
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