GNU/Linux Desktop Survival Guide
by Graham Williams
10.10 Upgrade Failed to Boot 
On upgrading to 10.10 I could not boot with the new kernel (2.6.35-22-generic). This is a known kernel bug but won't be fixed for Ubuntu 10.10 apparently. The older kernel will boot (which I was doing until eventually I installed a new version of VirtualBox and that could not compile with the old kernel because the kernel header package is no longer available for that version). The temporary patch is to add pci=nocrs to the kernel line in /boot/grub/menu/list. This will probably be overwritten next time update-grub is run.