This problem occurs when updatedefaultentry in /boot/grub/menu.lst is set to false. Setting to true again allows update-grub to run again. Then "sudo dpkg --configure -a" Solve the problem.
This problem occurs when updatedefaultentry in /boot/grub/menu.lst is set to false. Setting to true again allows update-grub to run again.
Then "sudo dpkg --configure -a"
Solve the problem.