Here's the exact sequence of operations needed to reproduce the bug:
STEP 1:
/usr/lib/nux/unity_support_test -p
STEP 2:
sudo apt-get install libopencv-dev
STEP 3:
/usr/lib/nux/unity_support_test -p
Alternatively,
STEP 1:
Write a simple OpenGL program to print GL_VERSION string.
STEP 2:
Install opencv developer package:
sudo apt-get install libopencv-dev
(It seems that during installation opencv adds Nvidia drivers to the kernel.)
STEP 3:
Run the OpenGL program again and check the OpenGL version.
** Description changed:
I'm using Thinkpad Edge 430 equipped with 3rd generation Intel Ivybridge
Graphics Card running Ubuntu 13.10.
SDL reports OpenGL 3.0 Mesa 9.2.1.
- After installing OpenCV (sudo apt-get install opencv), SDL reports
- OpenGL 1.4 Mesa 9.2.1
+ After installing OpenCV (sudo apt-get install libopencv-dev), SDL
+ reports OpenGL 1.4 Mesa 9.2.1
Because of downgraded opengl context all opengl applications throw
Major opcode of failed request: 153 (GLX) error.
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https://bugs.launchpad.net/bugs/1251522
Title:
OpenCV downgrades Intel Ivybridge Graphics Card drivers on Ubuntu
13.10
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/opencv/+bug/1251522/+subscriptions
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