Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: nvidia-graphics-drivers-390 (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1731968
Title:
384.90-0ubuntu0.16.04.2 EGL crashes at startup
Status in nvidia-graphics-drivers package in Ubuntu:
Confirmed
Status in nvidia-graphics-drivers-384 package in Ubuntu:
Confirmed
Status in nvidia-graphics-drivers-390 package in Ubuntu:
Confirmed
Bug description:
Release: Ubuntu 16.04.3 LTS
Package version: 384.90-0ubuntu0.16.04.2
In the latest driver 384.90-0ubuntu0.16.04.2, EGL initialisation is
now broken and the GL context returned is inconsistent leading to
crashes. I have prepared a minimised testcase that showcases the
problem with the latest driver. I have also made sure it works fine
with both previous versions 384.90-0ubuntu0.16.04.1 and
384.81-0ubuntu1 in a clean install.
Here's the code:
https://gist.github.com/funchal/bff0a8d6dae5b3ace1a88c392416b5bc
It can be compiled using "gcc main.c -lGL -lEGL". The crash is:
egl 1.4
a.out: main.c:59: main: Assertion `renderer' failed.
Aborted (core dumped)
This is caused by NULL return from glGetString for GL renderer. Note
this isn't the only way to cause a crash, for example attempting to
use the GL context in other ways will also crash, but this shows the
regression in a minimal testcase.
Previous drivers successfully complete the testcase with return code
0.
I have tested this on both a desktop machine with a GTX 1080, and a
display-less server with a Tesla K80, with a fresh Ubuntu install.
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