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Ubuntu updates just broke the operating system, it now fails to recognise the monitor and its display resolutions; How do I roll back this update?

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Welcome to Ask Ubuntu! This question should instead be filed as a bug report, and as such is off-topic, thanks! Instructions on filing a bug report are here. –  Jorge Castro Apr 9 '13 at 0:19
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closed as not constructive by Jorge Castro, Nathan Osman, gertvdijk, Thomas W., Kevin Bowen Apr 9 '13 at 0:29

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2 Answers

What is your video card model ?

You should be able to reconfigure your xorg with this command:

sudo dpkg-reconfigure xserver-xorg

you can try to use mesa module if you are not sure ..

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I had a similar issue a couple weeks ago. After a while I discovered that an additional hardware driver got auto activated after the update.

I solved it by simply DEACTIVATING all Additional Drivers.

This should be fairly secure since open source drivers will work.

To try it out do the following:

Gear menu > System Settings > Additional Drivers > THEN deactivate any active (green) driver that you find. They all should be deactivated (Gray) just like in the image below.

enter image description here

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