Hm it was not gfxgrub but gfxboot indeed. I have uninstalled it, then installed back grub and ... it seems all works fine now :)
So, gfxboot disallow system upgrades (kernel upgrades, is it right ?) ? -- package linux-image-2.6.28-11-generic 2.6.28-11.42 failed to install/upgrade: le sous-processus post-installation script a retourné une erreur de sortie d'état 2 https://bugs.launchpad.net/bugs/366747 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