Bug 153153

Summary:	microcode_ctl update locks machine up
Product:	[Fedora] Fedora	Reporter:	Hrunting Johnson <hrunting>
Component:	kernel-utils	Assignee:	Dave Jones <davej>
Status:	CLOSED NOTABUG	QA Contact:	Brian Brock <bbrock>
Severity:	high	Docs Contact:
Priority:	medium
Version:	2	CC:	pfrields
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2005-04-01 21:55:06 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 Hrunting Johnson 2005-04-01 21:09:44 UTC

From Bugzilla Helper:
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Description of problem:
I have three Dell 6650s identically configured with identical hardware specs.  On two of them, the microcode_ctl program will lock the machine up, requiring a manual power-cycle.  On the third, it works just fine.  The older version (pre-update) works just fine.  Something in the new update is locking up the machine.

Even when I do this by hand, it will lock up the machine.

Version-Release number of selected component (if applicable):
kernel-2.4-9.1.131_FC2

How reproducible:
Always

Steps to Reproduce:
1. update to 2.4-9.1.131_FC2
2. reboot box
3.
  

Actual Results:  Box hangs at 'Applying Intel Microcode Update'

Expected Results:  Box should apply the update and continue.

Additional info:

The boxes are all quad 1.5GHz Xeon machines, 1MB of cache (although Linux reports 512KB) with hyperthreading enabled.

Comment 1 Hrunting Johnson 2005-04-01 21:28:24 UTC

Disabling hyperthreading prevents the hangup with the new version.  Enable
hyperthreading and it will always hang.

Comment 2 Hrunting Johnson 2005-04-01 21:55:06 UTC

Grr, I'm off-base.  I thought these boxes had the latest BIOS updates, but I was
wrong.  The latest Dell BIOSes fix the problem.