I used the following command to start the update: sudo do-release-
upgrade
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https://bugs.launchpad.net/bugs/1475121
Title:
trying to up-grade from Ubuntu-12.04-LTS to 14.04-LTS
To
Public bug reported:
Could not calculate the upgrade
An unresolvable problem occurred while calculating the upgrade.
This can be caused by:
* Upgrading to a pre-release version of Ubuntu
* Running the current pre-release version of Ubuntu
* Unofficial software packages not provided by Ubuntu
2 labinnsw:
Installing xserver-xgl solved the problem in my case.
code:
sudo apt-get install xserver-xgl
Be very careful!!! I did this and now I cannot log in.
I have now the same problem. How can a fix it to log on to Ubuntu?
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[gutsy] Regression - Desktop effects could not be enabled on
