Bug 152199

Summary: agpgart-serverworks fail on hp netserver lc 2000
Product: Red Hat Enterprise Linux 4 Reporter: Karl Latiss <karl+rhbugzilla>
Component: kernelAssignee: Dave Jones <davej>
Status: CLOSED NEXTRELEASE QA Contact: Brian Brock <bbrock>
Severity: low Docs Contact:
Priority: medium    
Version: 4.0CC: dravet, jbaron, pfrields, riel
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2005-09-30 08:49:52 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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Description Flags
output of lspci -vvv none

Description Karl Latiss 2005-03-26 01:06:16 UTC 
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.6) Gecko/20050323 Firefox/1.0.2 Fedora/1.0.2-1.3.1

Description of problem:
I am seeing the following errors in dmesg upon boot and I don't think these boxes even _have_ agp:

Linux agpgart interface v0.100 (c) Dave Jones
agpgart: Maximum main memory to use for agp memory: 941M
agpgart: unable to determine aperture size.
agpgart: agp_backend_initialize() failed.
agpgart-serverworks: probe of 0000:00:00.0 failed with error -22
agpgart: Maximum main memory to use for agp memory: 941M
agpgart: unable to determine aperture size.
agpgart: agp_backend_initialize() failed.
agpgart-serverworks: probe of 0000:00:00.1 failed with error -22


Version-Release number of selected component (if applicable):
kernel-smp-2.6.9-5.0.3.EL

How reproducible:
Always

Steps to Reproduce:
1.boot
2.see error
3.
  

Actual Results:  error in dmesg

Expected Results:  no errors and no use of agp

Additional info:

output of lspci:

00:00.0 Host bridge: ServerWorks CNB20LE Host Bridge (rev 06)
00:00.1 Host bridge: ServerWorks CNB20LE Host Bridge (rev 06)
00:04.0 Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100] (rev 08)
00:05.0 VGA compatible controller: ATI Technologies Inc 3D Rage IIC (rev 7a)
00:0f.0 ISA bridge: ServerWorks OSB4 South Bridge (rev 50)
00:0f.1 IDE interface: ServerWorks OSB4 IDE Controller
03:06.0 SCSI storage controller: LSI Logic / Symbios Logic 53c1010 Ultra3 SCSI Adapter (rev 01)
03:06.1 SCSI storage controller: LSI Logic / Symbios Logic 53c1010 Ultra3 SCSI Adapter (rev 01)
Comment 1 Dave Jones 2005-03-27 02:56:02 UTC 
one of your host bridges must have AGP capabilities (lspci -vvv will tell you),
even if the box physically has no slots. It's a little difficult to detect this
situation unfortunatly.
I'll see if I can hardcode a check for that particular failure in the
serverworks driver, and silence the warnings..
Comment 2 Karl Latiss 2005-03-28 05:31:58 UTC 
lspci -vvv (attached) indeed does show agp capabilities and in fact the onboard
card reports itself as an agp card. Who would have thunk!

That being the case I wonder why I see the errors then?
Comment 3 Karl Latiss 2005-03-28 05:33:14 UTC 
Created attachment 112383 [details]
output of lspci -vvv
Comment 4 Jason 2005-04-18 15:49:15 UTC 
This is a duplicate of bug 124593 which was closed earlier.  This problem has
been around since FC2.  This bug is in FC3 and RHEL 3 too.
Comment 5 Dave Jones 2005-09-30 08:49:52 UTC 
the lack of specs on this chipset make it pretty much impossible to come up with
any workaround.  Silencing the warning is actually quite invasive too, as it
involves interpreting return codes across two modules in a generic routine.

The warning is however totally harmless, so for rhel4, I'm not going to change
this, for fear of breaking any working setups (as well as undocumented, that
driver is quite fragile in parts)  Hopefully at some point I'll come up with
something upstream that will be done in time for rhel5.