Bug 120872 - kernel hangs at boot if acpi enabled unless Tyan BIOS upgrade
kernel hangs at boot if acpi enabled unless Tyan BIOS upgrade
Product: Fedora
Classification: Fedora
Component: kernel (Show other bugs)
x86_64 Linux
medium Severity high
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Assigned To: Arjan van de Ven
Brian Brock
Depends On:
  Show dependency treegraph
Reported: 2004-04-14 14:55 EDT by Dan Hollis
Modified: 2007-11-30 17:10 EST (History)
2 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2004-04-16 18:58:54 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Dan Hollis 2004-04-14 14:55:34 EDT
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040113

Description of problem:
Tyan S2850
Opteron 140
512mb Reg ECC PC2100

If ACPI is enabled either in bios or in kernel, the kernel will hang
at boot.

Disabling ACPI in bios or appending 'acpi=off' to the commandline
allows booting.

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

How reproducible:

Steps to Reproduce:
1. Install FC2T2 on S2850
2. Reboot system after install finished
3. Yell at non booting kernel

Actual Results:  It hangs at boot :|

Expected Results:  It should have booted :|

Additional info:
Comment 1 Len Brown 2004-04-16 02:12:07 EDT
What is the last thing printed before the boot hang? 
If it prints nothing, please attach the output of acpidmp 
available in /usr/sbin/ in in pmtools here: 
Any change if you boot with "pci=noapic" or "noapic"? 
Does any other Linux version with ACPI enabled work? 
(eg. FC2-test1, FC1 with "acpi=on", or 2.6.5) 
Also, please verify that you have the lastest BIOS. 
Comment 2 Dan Hollis 2004-04-16 15:19:25 EDT
latest unreleased beta bios from tyan fixes this problem (and others):


hopefully tyan will release this publically soon.
Comment 3 Sahil Verma 2004-04-16 17:48:27 EDT
Please close, NOTABUG.

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