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I tried to upgrade from Ubuntu 13.10 to 14.04LTS. In between it asked about some configuration files whether to keep or replace them, for all I chose to replace them on each prompt but at the end installation said the machine is corrupted and cannot start.

NOTE: For kismet module while upgrading modules it gave an error popup.

I get the black screen with blinking cursor and also the below error screen.

ubuntu ext4-fs error (device dm-0): hdtree_dirblock_to_tree:920

When I hold SHIFT key while boot then I can choose an older kernel version and then I can login inside, I see the version show in About Ubuntu as 14.04LTS.

Please help on how can I fix the issue as my machine by default does not start and I get the black screen with blinking cursor.

Regards Ankit

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  • It's hard to advise without knowing what happend. Can you add the /var/log/dist-upgrade to the question. – mikewhatever Apr 20 '14 at 4:32
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This above answer helped me finish my upgrade.

While following instructions "Ubuntu Desktops 13.04 or 12.10 to 13.10 (Recommended)" here https://help.ubuntu.com/community/SaucyUpgrades and "Ubuntu Desktops 13.10 to 14.04 (Recommended)" here https://help.ubuntu.com/community/TrustyUpgrades

I experienced the "black screen" after login at version 13.10.

I applied the fix, and proceeded to continue the upgrade to 14.04 when prompted.

When the upgrade was complete I was not seeing a black screen, but no controls were available and only the background and the "Ubuntu 14.04" logo was visible.

I rebooted to 3.13.0-27 (newest) recovery mode and selected "dpkg"

Now my system seems to be operating as expected.

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Run with an older kernel, open a terminal, and type:

sudo dpkg-reconfigure -a

this will reconfigure all your installed packages, and usually solves the problem!

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