problem

[M R]

I have encounter a problem with using the ati driver.  I have enabled the drivers and have encounter a problem.  as soon as I enable the drivers it makes my screen flickers like crazy.  unable to change the settings afterward.  had to reinstall ubuntu 9.04 to resolve the problem.  I am prompt to enable the ati driver once ubuntu is started.  I say no since the screen works without it.  maybe I would not benefit from all of the 2d and 3d power of my ati hd 4870 pcie.  it is manufacture by ati and I have the diamond cd that came in the box.  no linux driver on the cd.   it must be a compatiblity issue.  here are my system specs.

motherboard P5q-em it also has onboard video,lan,sound,  cpu is a Q9550 2.8ghz quad core,  ram ddr2, 4gigs corsair dominator 1066mhz running by default at 800mhz, philips dvd burner, 250 gigs of hardrive sata2 seagate.  I am using the whole hard drive just for ubuntu.  good old dell crt monitor.  

the problem is with the video drivers that are promtp after installing and starting ubuntu for the first time.  it makes the screen unbarable or not able to look at it since it goes into a flcikering mode like crazy.  

  

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