After upgrading from 11.10 to 12.04 I find I am randomly logged out while I am working.

I have no idea why this is happening.

Can anyone suggest why this is happening and perhaps a method to fix this most unproductive of issues?



I had this same issue in Ubuntu 10.10. It was caused by X (the graphical window system) crashing. What graphics card are you using? A good first step is to check if there are proprietary drivers available for your graphics card. Click System Settings -> Additional Drivers.

The thing that finally got it working for me was to enable the X-Updates repo, which has newer drivers, etc.

sudo add-apt-repository ppa:ubuntu-x-swat/x-updates
sudo apt-get update
sudo apt-get upgrade



I ran into the same issue, where Ubuntu 12.04 was logging me out some time after locking the host OS (Win7, I'm running 12.04 in a VMware VM).

Locking the host OS and coming back later, the Linux VM was back at a login prompt, not a locked workstation prompt.

Updated the drivers as per above, but also installed the current nvidia drivers (my graphics card).

$ sudo apt-get install nvidia-current

Locked the host OS at lunch and came back and the Linux VM was where I left it. Hope this is helpful for others.

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