My system: 32 bit, PIV 2.4 Ghz, 1GB RAM, No Graphic Card, Windows / Ubuntu dual boot system.
Two days ago, I did upgrade, which went smoothly. After restarting system, and doing login, I see only blank desktop, no Unity launcher or task bar, no gui, nothing. I can press Ctrl+Alt+T and open programs, but graphics looks very old.
I was trying solutions posted on this forums, one of command sudo apt-get install -f gave following error, which I was getting previously also.
Preconfiguring packages . . . dpkg: error: parsing file '/var/lib/dpkg/available' near line 59 missing package name A fatal error occurred. Please report this as a bug and include the files. /var/log/dist-upgrade/main.log and /var/log/dist-upgrade/apt.log in your report. The upgrade has aborted. Your original sources list was saved in /etc/apt/sources list.distUpgrade System Error E: sub-process /usr/bin/dpkg/ returned an error code (2)