Comment 2 for bug 300713

Thank you for taking the time to report this bug and helping to make Ubuntu better. Unfortunately, we can't fix it because your description didn't include enough information.

What is the hardware configuration of your PC?
What kind of graphic card driver do you use?
Could you open a terminal, enter these lines:
lspci | grep VGA
glxinfo | grep rendering
And post the results here?
Have you been able to watch videos with older versions of ubuntu or other operating systems?

Greetings

Martin