Ubuntu Linux External Display Issues on the ThinkPad T410s

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I had a hell of a time finding a solution to this, so I figured I’d post the solution I found here for anyone else who happens to want to run Ubuntu on a ThinkPad T410s with an external display.

Symptoms:
– If you manage to get your external display working at all, it matches your laptop’s internal display resolution

Solution:
1. Upgrade your BIOS
2. In your new BIOS settings, change it to always use Discrete Graphics
3. Boot back into Ubuntu
4. Run nvidia-xconfig (assuming you’ve already installed the proprietary drivers)
5. Reboot

That’s it. Should work fine now.

As simple as it sounds, that took almost all day to figure out. Good luck.

After you do this, you may discover that your external display goes blank when you shut your laptop lid. The solution can be found in this thread on the Ubuntu forums.

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