I solved the issue by downloading and activating in xorg.conf the same EDID-values as the users of Sony Vaio CW-laptops. This feels a bit odd as the laptop LCDs are different.
The file in question (sonycw.txt) as well as discussion of the same problem w/ nvidia 310m: http://ubuntuforums.org/showthread.php?p=9149278 -- Nvidia driver fails to find laptop LCD https://bugs.launchpad.net/bugs/567076 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs