How to reinstall video drivers?

[NoOp]

On 04/25/2011 03:19 PM, Richard wrote:
> I have Ubuntu 10.10 on a Dell Inspiron 1545 laptop.  The video worked 
> sorta well  until I tried to change the driver to get it to work on 
> Google video chat.  Eventually I got it to work but now the video is set 
> at 800x640 and I cant get it to detect the monitor and change to the 
> higher resolutions.
> 
> I've googled, and read and read and still cant find anything besides a 
> reinstallation to correct my errors, whatever they may be.  So how do 
> you reinstall the video system without a complete reinstallation?

How did you change the driver?

Try: System|Administration|Additional Drivers
and see if perhaps: 1) you have/need additional drivers, and 2) if they
are enabled. Also, try: System|Preferences|Monitors & make sure that the
refresh settings are correct.

Other than that you'll need to provide more info regarding what you did
and what video drivers you actually use.