Public bug reported: Dear developers! I tried to install Ubuntu 12.04 LTS. It installs and boots successfully. I updated the system by Update manager and rebooted. After this second reboot failed. The dark magenta boot screen appeared and nothing else. I try to reinstall to Ubuntu 12.10 with the same result. I try official NVidia driver before upgrading from official site. And no difference. To solve this problem I fixed a version of the linux-image-generic to 3.5.0.17.19 by Synaptic (installed by "sudo apt-get install synaptic" ) and upgrade the system by Update Manager. And all works successfully.
If additional information is required I will install it at USB External HDD and try to obtain this information. My System Information: Notebook Lenovo IdeaPad Z580A (59-342178) Screen 15,6" 1366x768 Processor Intel Core i7-3520M 2,9GHz Chipset Intel HM76 Video: Intel & NVIDIA GeForce GT 640M, 2GB Memory 6GB (Max. 8GB) HDD 1000GB DVD-RW 2xUSB 3.0 and 2xUSB 2.0, VGA Cardreader SD, SD Pro, MMC, MS Pro, xD WEBcam FastEthernet 10/100 Wi-Fi 802.11b/g/n Bluetooth ** Affects: linux-meta (Ubuntu) Importance: Undecided Status: New ** Tags: kernel-bug no-boot -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1081268 Title: Ubuntu does not boot after upgrading to latest linux-image-generic (3.5.0.18.21-?) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-meta/+bug/1081268/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs