Nvidia graphics trouble

[Carsten Agger]

I'm trying to get a friend's computer to work with Ubuntu 10.10.

Everything works fine, except the graphics card, an Nvidia GEForce 9800 GT.

After a default installation, the screen blanks after booting, meaning 
the monitor suddenly says "No input". This is probably due to the 
failure of the free  "nouveau" nvidia driver.

In order to even boot the computer, it's necessary to remove the boot 
parameters "quiet splash" and replace them with "nomodeset". This, 
however, disables 3D acceleration.

Installing the proprietary Nvidia driver from System/Additional drivers 
produces *exactly* the same result - a blank screen, no input received 
by the monitor.

We also tried downloading the newest driver from the Nvidia web site - 
this made the screen blink while trying to launch X, after which it 
bailed out to terminal login.

Does anyone know how to make 3D acceleration work with this card? 
Apparently it worked in 8.10 and 9.04 but has been broken in 10.04 and 
10.10 (don't know about 9.10). I was unable to find any help on the 
wiki, alas.

best regards and thanks in advance for any suggestions,

Carsten


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