Now I can positively confirm, that the problem was given by a Nouveau driver. According to the receipt #19, I removed the Nouveau driver, restarted for sure, allowed the Nvidia propriety driver (to run Ubiquity in 3D), and everything is going fine now. I was just confused by the "install" parameter, which made no sense to me, but I trusted for a while, until I decided to uninstall it. Thanks a lot!!!
Anyway, the bug still persisted until yesterday, and if there is some priority to make the Nouveau driver run with this card, I would be really happy to help as a testing case. Don't hesitate to contact me on o.petris$volny.cz (with some patience, it takes sometimes some days for me to check mails. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/763052 Title: Ubuntu can't boot on nvidia GeForce GT240 with nouveau drivers To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/763052/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs