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This is the first time I'm having problems during Ubuntu upgrade. I have nothing to do except pressing the power button until shutdown in the black screen when I choose to Log out from the session indicator menu. Any ideas that can help me out will be much appreciated. I hope I don't have to do a clean install to get rid of this minor problem.

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closed as unclear what you're asking by Braiam, BuZZ-dEE, Jorge Castro, Warren Hill, Eric Carvalho Jan 8 '14 at 10:49

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question.If this question can be reworded to fit the rules in the help center, please edit the question.

have you checked the log files for causing the issue ? – Raja Oct 18 '13 at 15:36
I have no idea about log files unfortunately; which one should I look? – Sadi Oct 18 '13 at 15:47
i think dmesg can help you.… – Raja Oct 18 '13 at 15:49
Thanks, but if only I knew what to look for in there ;-) – Sadi Oct 18 '13 at 16:01
@Insperatus: Thanks for the tip, but as far as I can remember now, I couldn't even get a terminal screen, so in the end, after also seeing many other flaws, deficiencies, bugs, etc. on a clean install of 13.10 in another machine, I decided to switch back to Ubuntu 13.04 which I had saved using Clonezilla. – Sadi Oct 23 '13 at 8:38

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