This bug affect nvidia driver, so canonical and the ubuntu community can't fix the problem, that's why screensavers and not activated by default. I think that we should let this bug as it is here and it will help developers.
This bug affect nvidia driver, so canonical and the ubuntu community can't fix the problem, that's why screensavers and not activated by default. I think that we should let this bug as it is here and it will help developers.