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I have been using 10.10 beta on my new Sony Vaio VPCF136FM configured as
follows:

Processor: i7-740QM / 1.73 GHz
Graphics: NVIDIA GeForce GT 425M GPU
Display: 16.4" / 1600 x 900
Memory: 6 GB

Ubuntu can't sense my display to set up native x-server properly - it defaults to 800x600.
I installed the NVIDIA driver when I originally installed 10.10 beta. Worked perfectly.
Yesterday's (10/04/10) NVIDIA driver update broke my system - won't boot into desktop - locks up the system. I had to reboot into safe mode and remove the new NVIDIA driver. I am now only able to run in safe mode 800x600 because Ubuntu can't detect my display.

More info:

I tried reinstalling the NVIDIA driver. Rebooted to a failsafe root terminal.
Ran: nvidia-xconfig and received the following message:

Using X configuration file:
    "/etc/X11/xorg.conf"

VALIDATION ERROR:
    Data incomplete in file /etc/X11/xorg.conf.
    Undefined Device "(null)" referenced by Screen "Default Screen".

Backup file '/etc/X11/xorg.conf' as '/etc/X11/xorg.conf.backup'

New X configuration file written to '/etc/X11/xorg.conf'

I try to reboot and I get a blank screen with a color background. I
can't Ctrl-Alt-Del to reboot, I can't Ctrl-Alt F# to a virtual terminal.
I have to do a cold restart (i.e. hold the power button down to shutdown
and then reboot into failsafe graphics mode so I can remove the NVIDIA
driver to regain control of my system again).

** Affects: nvidia-graphics-drivers (Ubuntu)
     Importance: Undecided
         Status: New

-- 
Beta 10.10 Nvidia update broke Sony Vaio VPCF136FM installation
https://bugs.launchpad.net/bugs/655078
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