Comment 26 for bug 1415219

You mean the patch does not workaround the issue and the output is still identical?

I see in your glxinfo output that you are still using Mesa 8. I would recommend to upgrade to Mesa 10 using the lts backports since this bug might already been fixed in newer driver versions. You can install a more recent xorg/mesa version using:

sudo apt-get install --install-recommends linux-generic-lts-trusty xserver-xorg-lts-trusty libgl1-mesa-glx-lts-trusty

( see https://wiki.ubuntu.com/Kernel/LTSEnablementStack )

I am not sure whether the kernel upgrade is necessary, but it shouldn't have any disadvantages.

Michael