Experiencing the same issue. On most animations of gala the black/desktop flickering appears randomly. I have the same GPU. I think pantheon desktop of freya has quite poor performance on this hardware. On Luna it works great.
Experiencing the same issue. On most animations of gala the black/desktop flickering appears randomly. I have the same GPU. I think pantheon desktop of freya has quite poor performance on this hardware. On Luna it works great.