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Bug 147258

Summary: agp_backend_initialize() failed with Xen on IBM Thinkpad T21
Product: [Fedora] Fedora Reporter: Alexander Boström <abo>
Component: kernelAssignee: Dave Jones <davej>
Status: CLOSED ERRATA QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: pfrields, wtogami
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Hardware: i686   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2005-10-06 01:00:51 EDT Type: ---
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Description Alexander Boström 2005-02-05 09:18:14 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.)

dmesg:

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
2.6.10-1.1124_FC4xen0.

Same kernel without xen0 also works.

Version-Release number of selected component (if applicable):
2.6.10-1.1124_FC4xen0

How reproducible:
Always.
Comment 1 Alexander Boström 2005-02-05 09:25:31 EST
See also bug #143078.
Comment 2 Alexander Boström 2005-03-13 14:16:54 EST
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.
Comment 3 Dave Jones 2005-10-06 01:00:51 EDT
iirc, this got fixed in subsequent kernels.