[WBEL-users] X Server won't start with 2.4.21-20 kernel

[Alfred von Campe]

I'll reply to my own question (I got a response off list - thanks 
Paul!).

> I recently pulled down the latest updates with "yum -update", and now 
> my X server won't start.  The error from the XFree86.log file is:
>
> (EE) GARTInit: unable to open /dev/agpgart (No such device)
>
> If I try to do a "insmode agpgart" I get the following error:
>
> Using /lib/modules/2.4.21-20.0.1.EL/kernel/drivers/char/agp/agpgart.o
> /lib/modules/2.4.21-20.0.1.EL/kernel/drivers/char/agp/agpgart.o: 
> init_module: No such device
> Hint: insmod errors can be caused by incorrect module parameters, 
> including invalid IO or IRQ parameters.
>       You may find more information in syslog or the output from dmesg

This is a known bug in the 2.4.21-20 kernel.  There are three 
workarounds:

1. Go back to the previous kernel
2. Download the "fixed" kernel from the url given by the tech in this
bug report https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=131907
3. Wait for the U4 kernel to come out (not really practical).

Basically, the new kernel has problems recognizing older motherboards 
with the Intel 810E chipset.  Just thought I'd send the response to the 
list in case anyone else has the same problem.

Alfred