Nvidia installer does uninstall previous kernel driver ?

Gene Heskett gene.heskett at verizon.net
Mon Nov 13 23:29:43 UTC 2006

On Monday 13 November 2006 14:21, Kim Lux wrote:
>In my rant last week, I complained about how the Nvidia installer
>uninstalled the video driver for previous kernels.  Some people said
>this wasn't so.
>This morning I installed kernel 2849 via yum.  When I ran it, I was
>forced to build a new driver using the
>NVIDIA-Linux-x86-1.0-9629-pkg1.run installer.   This is the same
>installer that I used with my 2835 kernel last week.
>When I did the install this morning, I received the following. (From
>my /var/log/nvidia-installer.log)
>"> There appears to already be a driver installed on your system
>(version: 1.0-
>   9629).  As part of installing this driver (version: 1.0-9629), the
>   driver will be uninstalled.  Are you sure you want to continue? ('no'
>will a
>   bort installation) (Answer: Yes)"
>So it appears that one must un install the driver for the previous
>kernel to install a driver for the current kernel.  Just to be sure, I
>tried running kernel 2835 and X windows will not start for it.  So the
>previous driver does get un installed, even though the same installer is
>being used.
>This causes me a lot of grief.
>If anyone knows of a work around for this problem, I'd love to hear it.

Kim, if I can get your attention, you were no doubt building it on a 
kernel that already did use nvidia.  That means their installer, which 
probably did a uname -r to see what it was to build for, checked and saw 
there was already one there that it would have to overwrite.

Now, since the kernels all keep their own versions of all the modules 
in /lib/modules/`uname -r`/kernel, and there can be no clash between 
versions because each kernel looks in its 
own /lib/modules/`umane -r`/kernel directory tree for its own module 
resources.  If you had switched to the nv driver, then rebooted to the 
new kernel to do this build/install, then there should not have been a 

If thats not the case, then either nvidia's build script is terminally 
broken, or you have indeed found a new way to thoroughly fubar things.

>Kim Lux,  Diesel Research Inc.

Cheers, Gene

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