Bug 113944

Summary:	AMD 8151 AGP Missing for Fedora Core 1 for x86_64
Product:	[Fedora] Fedora	Reporter:	ammulder
Component:	kernel	Assignee:	Dave Jones <davej>
Status:	CLOSED WONTFIX	QA Contact:	Brian Brock <bbrock>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	rawhide	CC:	64bit_fedora, pfrields
Target Milestone:	---
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2004-10-26 00:38:34 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description ammulder 2004-01-20 15:27:22 UTC

Description of problem:

AGP support is compiled into the kernel for Fedora Core 1 Test 1 for
x86_64.  Apparently, AMD 8151 support was not included.  dmesg output
includes "agpgart: no supported devices found.".  SuSE 9.0 for AMD64
includes AMD 8151 support and correctly identifies the AGP bus during
kernel loading.

Steps to Reproduce:
1. boot
2. examine dmesg output
  
Actual results:

No AGP support

Expected results:

AGP support

Additional info:

Tyan Thunder K8W board, Nvidia GeForce 4 4600.  AMD web site claims
8151 support has been availabe in the kernel for some time now. 
Probably just needs to be compiled in.

Comment 1 Dave Jones 2004-01-20 15:42:54 UTC

support is there, but due to a bug, it doesn't pick up the agp bridge
on the tyan board (its in a different place to other amd64 boards).
The fix for this is in the current -testing kernel (2163).

Comment 2 Justin M. Forbes 2004-01-20 19:25:48 UTC

The Tyan board specifically has the AGP bridge tied to CPU1 instead of
CPU0.  While this should be a performance improvement in the future,
it will take a while for everyone to understand the implications of
that choice. Specifically, while the testing kernel will identify the
AGPGart, it is my understanding that the nVidia drivers still will not
function in this configuration. They are working on the problem.