@Rob: Ok, so I'm back from rebooting after bumblebee install and I report no corruption nor frame rate reduction. optirun glxspheres is working flawlessly on my NVidia 650M at 220 fps (jpg transport)...
However... I did install it through aptitude, which pointed that the recommended virtualgl-libs-ia32 (i386) was incompatible with the available versions of libgl1-mesa-glx:i386 (only version 9.0-0ubuntu1 is available here). As such, aptitude (rightfully) ignored this recommendation. Muon, on the other hand, *will* try to install virtualgl-libs-ia32, which I suppose will break the downgrade to mesa 8.0.4. Now, what do I make of this? Well, for start, I fear my bumblebee install won't work with my wine games. I haven't tried it yet, but the lack of a 32 bits virtualgl lib is not looking promising. I will report on that soon. Then, again, aptitude won't install the 32bits version of virtualgl for the lack of a 32bits version of libgl1-mesa-glx. Well, there's one build of such version on the very same repository pointed by the OP, under i386 builds! My next steps are: - Find out if the lack of virtualgl-libs-ia32 is really problematic (i.e. wine gaming). - Find out if I can install virtualgl-libs-32 using the i386 builds of mesa 8.0.4 from the repository of the OP. -- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to kde-workspace in Ubuntu. https://bugs.launchpad.net/bugs/1061073 Title: Desktop effects are slow and desktop corruption using mesa 9 To manage notifications about this bug go to: https://bugs.launchpad.net/kdebase-workspace/+bug/1061073/+subscriptions -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs