Bug 227202
Summary: | FADT corrupted by acpi-reset-mechanism patch beginning with 2.6.9-42.0.2.EL. | ||||||
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Product: | Red Hat Enterprise Linux 4 | Reporter: | Dave Gutz <davegutz> | ||||
Component: | kernel | Assignee: | Eric Paris <eparis> | ||||
Status: | CLOSED NOTABUG | QA Contact: | Brian Brock <bbrock> | ||||
Severity: | low | Docs Contact: | |||||
Priority: | medium | ||||||
Version: | 4.4 | CC: | jbaron, konradr | ||||
Target Milestone: | --- | Keywords: | Regression | ||||
Target Release: | --- | ||||||
Hardware: | i686 | ||||||
OS: | Linux | ||||||
Whiteboard: | |||||||
Fixed In Version: | Doc Type: | Bug Fix | |||||
Doc Text: | Story Points: | --- | |||||
Clone Of: | Environment: | ||||||
Last Closed: | 2007-02-14 16:40:09 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: | |||||||
Attachments: |
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Description
Dave Gutz
2007-02-03 13:47:59 UTC
Created attachment 147272 [details]
dmesg
How did you come to the conclusion that the patch over-writes the ACPI FADT table? What machine is this specifically? Are you running the latest BIOS version? I went looking for any file containing the text "BIOS bug: Legacy-free FADT
detected, but FADT size (129) is incorrect!" and came up with the patch file.
This message is the only difference I could see between when the issue happens
and when it does not.
Below is hardware info. dmesg is attached.
>cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 3
model name : Intel(R) Pentium(R) 4 CPU 3.20GHz
stepping : 3
cpu MHz : 3200.742
cache size : 1024 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 5
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat
pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe pni monitor ds_cpl cid
bogomips : 6403.91
The BIOS puts out a message "Default BIOS settings have been loaded due to BIOS
update or checksum issue." This message is put up by an American Megatrends
product (www.ami.com) Revision 3.21 (02/04/04). There is something about Core
version 08.00.09 (AMIBIOS 8?). There was nothing available on their website
that I could use to update BIOS. In their documentation they say the error
message usually can be corrected by entering their setup program. (?). I'm
willing to try most anything to help.
The only time I get these messages and this behavior is when booting after
booting the kernel I identified or later. No problems old kernel. No problems
WinXP.
Let me know what else I can provide. Thanks, I think you guys do great work.
Let me build you a test kernel without that patch for that specific version and see if the problem appear. Try this kernel, pls: http://darnok.com/kernels/kernel-smp-2.6.9-42.0.2.EL_no_acpi_reset.i686.rpm or http://darnok.com/kernels/kernel-smp-2.6.9-42.0.2.EL_no_acpi_reset.x86_64.rpm I tried the new kernel. At first it seemed to correct the problem. Then I tried a few more times with different way of powering off and now I can get the problem to happen on any kernel even Windows. (After powering off, I now press the power button on the pc chassis to discharge any capacitors.) I regret any of your time I may have wasted. Life is too short. It may be my motherboard battery...anyhow that's my problem... :-( Thank you for the trial kernel. Regards, Dave Closing, not a bug. Dave, No problem. Thanks for working on this and getting to the bottom of the problem. Replacing the CMOS battery corrected the problem. |