NVIDIA driver needs nomodeset kernel parameter in order to work. Simply add this value to the append option in LILO's configuration file (/etc/lilo.conf)

append = "nomodeset"

and run LILO

$ lilo

If your dmesg contains the following message from the NVIDIA driver:

NVRM: Your system is not currently configured to drive a VGA console
NVRM: on the primary VGA device. The NVIDIA Linux graphics driver
NVRM: requires the use of a text-mode VGA console. Use of other console
NVRM: drivers including, but not limited to, vesafb, may result in
NVRM: corruption and stability problems, and is not supported.

then change LILO's configuration file by setting the vga option to normal.

vga = normal

and run LILO

$ lilo

If that is not enough, edit LILO's configuration file once again and add the following option to the kernel parameters:

video=vesa:off

and run LILO again.

Tags: slackware