Red Hat Bugzilla – Bug 147258
agp_backend_initialize() failed with Xen on IBM Thinkpad T21
Last modified: 2015-01-04 17:16:37 EST
Description of problem:
Using kernel 2.6.10-1.1124_FC4xen0 on an IBM Thinkpad T21 (S3
Savage/IX-MV graphics), agpgart won't initialize. (Distribution is FC3.)
Linux agpgart interface v0.100 (c) Dave Jones
agpgart: Detected an Intel 440BX Chipset.
agpgart: Maximum main memory to use for agp memory: 93M
agpgart: unable to get memory for graphics translation table.
agpgart: agp_backend_initialize() failed.
agpgart-intel: probe of 0000:00:00.0 failed with error -12
Last known working Xen kernel was 2.6.9-1.1020_FC4xen0 (but see bug
#142046). I haven't tried any later Xen kernel except
Same kernel without xen0 also works.
Version-Release number of selected component (if applicable):
See also bug #143078.
Using 2.6.11-1.1177_FC4xen0, agpgart does initialise without any error, but the
PCI-AGP bridge and the VGA compatible controller are missing anyway (in lspci)
for some reason.
Note that this is FC3 + xen package and kernel from FCdev. I chose to --nodeps
install xen because of a python 2.4 dependency. I'm tempted to try FCdev instead
although I doubt it'll matter in this case.
iirc, this got fixed in subsequent kernels.