Well, the workaround would be to use -nouveau with the experimental 3d mesa driver. But YMMV... that is unsupported and is a bit hit-or-miss for some people.
Another thing to try would be to uninstall and re-install -nvidia, which should force a rebuild of the kernel driver. Kind of a long-shot though. Booting an earlier kernel might be worthwhile just in case it is a kernel ABI inconsistency. Hold down <shift> while booting to see the menu to select previously installed kernel versions. As far as debugging, you could peruse these general upstream links: http://www.nvnews.net/vbulletin/showthread.php?t=58498 ftp://download.nvidia.com/XFree86/Linux-x86/270.30/README/knownissues.html I briefly scanned through them myself but didn't spot anything obviously applicable here. Perhaps something relevant would catch your eye though. Another place to check is the upstream forums: http://www.nvnews.net/vbulletin/forumdisplay.php?f=14 There are a couple reports of black screen / freezing bugs, but the symptoms sound slightly different than yours: http://www.nvnews.net/vbulletin/showthread.php?t=159440 http://www.nvnews.net/vbulletin/showthread.php?t=159544 ** Changed in: nvidia-graphics-drivers (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/726496 Title: Cannot use Unity or Classic desktop with effects after the latest nvidia+xorg update -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
