[lug] Newbie tries to make laptop modem work

[D. Stimits]

It will work if your installed kernel source tree is configured to match
the running kernel. For example, after a make mrproper, you can do make
menuconfig; that configuration must be the same to guarantee success, it
alters headers and parts of the source. If you get it close, you might
get lucky and it'd work even without being an exact match. But if you
just install an unconfigured source tree, I'd bet high dollars (monopoly
dollars since I'm broke) against success.

D. Stimits, stimits at idcomm.com

Glenn Murray wrote:
> 
> D.,
> 
> Thanks for the response.  I wondered what that meant.  If I understand
> correctly, if I (can) compile the modules myself, then they will work
> with the existing kernel?
> 
> Glenn Murray
> www.mines.edu/~gmurray/public_html/Welcome.html
> 
> On Fri, 30 Nov 2001, D. Stimits wrote:
> > Glenn Murray wrote:
> ...
> > > glenn/$ sudo update-modules
> > > depmod: *** Unresolved symbols in /lib/modules/2.2.19/misc/lt_serial.o
> >
> > Your module does not match your kernel. If you want to get pickier, the
> > kernel is expecting symbols in the module that point at matching module
> > handlers, and either they don't exist, or they are at the wrong offset,
> > or they exist but are shaped differently (function signature must match
> > kernel's idea, and the kernel must look in the right location). Perhaps
> > the module was compiled against a kernel that has been configured
> > differently than the kernel that is running. Configuring a kernel alters
> > headers and configuration files, so having the same kernel version isn't
> > enough. Sometimes people compile using everything correctly, but don't
> > realize they're using two different compilers for the module and kernel,
> > which will also cause "bad things" to happen.
> >
> > D. Stimits, stimits at idcomm.com
> 
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