Red Hat Bugzilla – Bug 18736
agpgart fails to load
Last modified: 2007-04-18 12:29:07 EDT
The supplied agpgart module fails to load. Modprobe reports "device busy
or missing error". Problem occurs on i815 chipset with on board video
disabled and geforce 2 in agp slot. lsmod indicates the driver was not
I'd like to confirm this bug. I have the exact same setup. The problem lies
in agpgart_be.c at line 2255 ... This kernel module seems only capable of
addressing the onboard video driver, and not
the agp 4x port on the motherboard. Terribly depressing since the 815e chipset
minus the onboard video was only very recently released...
Anyone know where we can get a newer version of agpgart_be.c ?
In 2.2.16-22 (the 7.0 kernel), the 815 chipset is not yet supported.
If/when there is going to be an kernel-eratum, it will be supported.
The agpgart_be.c needs only a few lines of changing to make it work.
I've tried it on an IBM NetVista NGC machine, and agpgart actually loads
afterwards, but there are other problems with this machine that makes
it impossible to run Linux with DRI support on it (just to warn if someone tries
A patch can be found from the linux kernel mailing list: