Bug 147258

Summary:	agp_backend_initialize() failed with Xen on IBM Thinkpad T21
Product:	[Fedora] Fedora	Reporter:	Alexander Boström <abo>
Component:	kernel	Assignee:	Dave Jones <davej>
Status:	CLOSED ERRATA	QA Contact:	Brian Brock <bbrock>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	rawhide	CC:	pfrields, wtogami
Target Milestone:	---
Target Release:	---
Hardware:	i686
OS:	Linux
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Fixed In Version:		Doc Type:	Bug Fix
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Last Closed:	2005-10-06 05:00:51 UTC	Type:	---
Regression:	---	Mount Type:	---
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Embargoed:

Description Alexander Boström 2005-02-05 14:18:14 UTC

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 14:25:31 UTC

See also bug #143078.

Comment 2 Alexander Boström 2005-03-13 19:16:54 UTC

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 05:00:51 UTC

iirc, this got fixed in subsequent kernels.