运行 #apt-get upgrade 我被告知运行sudo apt-get -f install. 我这样做并看到：
The following extra packages will be installed:
linux-generic-pae linux-headers-generic-pae linux-image-generic-pae
The following packages will be upgraded:
linux-generic-pae linux-headers-generic-pae linux-image-generic-pae
3 upgraded, 0 newly installed, 0 to remove and 138 not upgraded.
3 not fully installed or removed.
Need to get 0 B/6,460 B of archives.
After this operation, 0 B of additional disk space will be used.
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dpkg: dependency problems prevent configuration of …