I already tried to boot an upstream kernel trough a usb key with grub installed. No luck up to rc4.
However I managed to boot previous kernels (a.k.a. everything from 3.5.0-14). I did an update of the ubuntu installation and noticed at the boot that the grub was saying 1.99rcx. This did not match with the one installed which was 2.0.0-5. I manualy reinstalled the grub with : grub-install --efi-directory=/boot/efi/ --target=x86_64-efi --recheck --debug And then, kernel started to boot. (Magic instant of pure joy). So I need to say that new grub is doing quite some magic to make the kernel boot. However, booting the efi enabled kernel directly by the efi shell or uefi bios, does not work. I tried to boot the current testdrive build usb image, does not boot either. I'm now able to boot my previously installed ubuntu (with the noefi cmdline), but I'm unable to boot from any CD or boot image. Especially, the LTS version of ubuntu does not boot with this kind of hardware (sandy bridge, uefi is becoming more and more common). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1053897 Title: kernel does not boot without noefi on commandline To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1053897/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
