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1

Ubuntu 14.04 64bit locks up after login

rated 0 times [ 1] [ 0] / answers: 1 / hits: 7831 / 2 Years ago, sat, june 18, 2022, 7:55:50

Today I installed Ubuntu 14.04 LTS 64-bit. The installation went well with no sign of issues.

On boot everything seems fine until I get to the login screen. After putting in my password and logging in the login screen disappears, however unity never loads and the mouse and keyboard become non-responsive. The only thing on the screen is the background image for the desktop. The only thing I can do at that point is force power down.

Some other possibly relevant info:

Computer is a Dell Vostro 3300 with Nvidia Optimus (this laptop model
came with 2 versions of optimus, mine is the 2nd version that can
actively switch between discrete/onboard and does not require a

reboot to do so)

Unfortunately Dell did not supply a way to disable Optimus in BIOS on this model.

Tried fresh installs from 2 different flash drives and 2 live CDs.

No problems with previous installs of 12.04,12.10,13.04 and
13.10.

Reinstalled 13.10 and then upgraded to 14.04 with same results.

Can interact with items on login screen with no issues.

Not sure what to try next?

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issfullus

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1 Year ago

answered 2 Years ago skaing · Accepted Answer

Issue resolved.

To remedy my problem I did the following:

Boot into failsafe graphics mode and login with normal user (or boot to terminal instead)

purge nvidia and bumblebee if installed sudo apt-get purge nvidia* bumblebee*

install nvidia prime sudo apt-get install nvidia-prime

Reboot

This resolved my issues after a reboot. I was able to login with no issues and verify that both graphics cards are usable and that Nvidia proprietary driver version 331.38 is in use.