Accelerated X stop working

[James McDonald]

Jean Sagi wrote:

> Hi all,
>
> Two days ago, when I boot I didn't get a graphical login, instead a 
> normal text login. After reading some logs I saw that there was an 
> error in the XFree86 log:
> ...
> (**) NVIDIA(0): Use of NVIDIA internal AGP requested
> (--) NVIDIA(0): Linear framebuffer at 0xF0000000
> (--) NVIDIA(0): MMIO registers at 0xFD000000
> (EE) NVIDIA(0): Failed to initialize the NVIDIA kernel module!
> (EE) NVIDIA(0): *** Aborting ***
> (II) UnloadModule: "nvidia"
> (II) UnloadModule: "vgahw"
> (II) Unloading /usr/X11R6/lib/modules/libvgahw.a
> (EE) Screen(s) found, but none have a usable configuration.
>
> Fatal server error:
> no screens found
> ...
>
> I search some forums and I found that when several upgrades are made 
> to nvidia drivers then problems arise.
> A common solution is to reinstall nvidia drivers or upgrade them to a 
> more recent version.
>
> While I was  considering this, I tried using the non-accelerated "nv" 
> driver wich comes with default XFree86 and then X came up again, 
> obviously with no acceleration. I changed the line:
>
> Driver "nvidia"
>
> by
>
> Driver "nv"
>
> And as I said X works again, so there is something I did... But I 
> really don't remember what, I haven't changed any file, or 
> installed/upgraded any package.
>
> Any help would be very appreciated, and BTW I use Mandrake 10 Oficial, 
> (Standar Kenerl 2.6.3-7)
>
I had this problem when I boot another kernel and forget which one has 
the nvidia driver compiled for it.