Mike Jones wrote:
...
Card works fine, except when trying to upgrade the Nvidia drivers to
7174, then after copying the Xorg.conf.nvidia to Xorg.conf, X cannot
start. I'm also unable to get TV-out to work. I can simply copy the
previous Xorg.conf file back and can get the display working - but no
TV.
...
(EE) NVIDIA(0): Failed to load the NVIDIA kernel module!
(EE) NVIDIA(0): *** Aborting ***
(II) UnloadModule: "nvidia"
(EE) Screen(s) found, but none have a usable configuration.
Fatal server error:
no screens found
modprobe nvidia
startx
From: ftp://download.nvidia.com/XFree86/Linux-x86/1.0-7174/README.txt
Q: My X server fails to start, and my X log file contains the error:
"(EE) NVIDIA(0): Failed to load the NVIDIA kernel module!"
A: The X driver will abort with this error message if the NVIDIA kernel
module fails to load or the device files aren't present.
If you receive this error, you should check the output of `dmesg`
for kernel error messages and/or attempt to load the kernel module
explicitly with `modprobe nvidia`. If unresolved symbols are
reported, then the kernel module was most likely built against a
Linux kernel source tree (or kernel headers) for a kernel revision
or configuration that doesn't match the running kernel.
You can specify the location of the kernel source tree (or headers)
when you install the NVIDIA driver using the --kernel-source-path
command line option (see `sh NVIDIA-Linux-x86-1.0-7174-pkg1.run
--advanced-options` for details).
If 'lsmod' reports that the "nvidia" kernel module is loaded, the
device files (/dev/nvidiactl, /dev/nvidia0..7) may be missing.
So, basically, you are trying to load X, when X tries to access the
devices, the kernel notices that the module is not yet loaded, so it
loads the nvidia module, by this time, X has already noticed that the
device files are not connected to a card, so it has already failed. If
you try starting X again immediately, it will work. So, just make sure
you explicitly load the nvidia kernel module (i.e. in your start
scripts) and early enough that the devices are available (i.e. created
by udev) by the time X needs them (so, long before starting gdm or
whatever).
Mike
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