29 packages can be updated - How? [duplicate]
Solution 1:
Try these commands (although the third one may not be necessary for you):
sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade
A reboot may or may not be necessary (sudo shutdown -r 0)
Solution 2:
When you ran apt-get upgrade, where there any "not upgraded"? Eg:
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Looking at 0 not upgraded. If there were ones that were not upgraded, run apt-get dist-upgrade