Originally Posted by ioni
i'm kinda disappointed about this issue.
We don't even know if is really an nvidia issue or an issue with xorg-server 1.9.0 because none of nvidia developers replied. My guesses are is an nvidia issue because with nouveau works
It's not really anyone's fault, per se. The 1.9.0 server probably just hits a different path that isn't accelerated in the nvidia driver. Anything could cause this, but it's probably related to a memory format change. I even remember reading something a while back about using glyph atlases that might be related and could potentially be problematic to resolve.
The responsibility for fixing it is definitely nvidia's, though--it's up to them to find where it's falling back to software and hook the acceleration back up.