Red Hat Bugzilla – Bug 722785
No boot-time microcode update visible after microcode_ctl 1.17-15 update
Last modified: 2014-06-18 04:03:23 EDT
Description of problem:
After Fedora 15 Update microcode_ctl-1.17-15.fc15, my Intel systems' boot messages no longer indicate a microcode update.
For example, on this machine, the relevant boot messages were:
microcode: CPU0 sig=0x6fd, pf=0x80, revision=0xa3
microcode: CPU1 sig=0x6fd, pf=0x80, revision=0xa3
microcode: Microcode Update Driver: v2.00 <firstname.lastname@example.org>, Peter Oruba
microcode: CPU0 updated to revision 0xa4, date = 2010-10-02
microcode: CPU1 updated to revision 0xa4, date = 2010-10-02
After the update to microcode_ctl-1.17-15.fc15, only the first three lines appear. However, the last two lines will still appear if I run "microcode_ctl -u" as root.
This processor is an Intel Core 2 Duo T5250, but I think I can provide other examples if you'd like.
Version-Release number of selected component (if applicable):
Perform a normal boot of the system.
Steps to Reproduce:
1. Boot system.
No confirmation of updated CPU microcode.
Boot messages, visible in dmesg output or in /var/log/messages, indicating that CPU microcode was updated.
Upon request, of course.
microcode_ctl-1.17-16.fc15 has been submitted as an update for Fedora 15.
See details in bug 690930
* should fix your issue,
* was pushed to the Fedora 15 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing microcode_ctl-1.17-16.fc15'
as soon as you are able to.
Please go to the following url:
then log in and leave karma (feedback).
This change is working well for me on an Intel Atom N280 and the Core 2 Duo T5250 mentioned above, both of which required a microcode update. It also works on a Pentium 4 "650", which did not need a microcode update. Thanks for the good work.
On an AMD Athlon II X4 620, it got the usual "AMD microcode update via /dev/cpu/microcode not supported" message, strangely enough, 7 times for a 4-core processor. I understand that this is expected behavior.
microcode_ctl-1.17-16.fc15 has been pushed to the Fedora 15 stable repository. If problems still persist, please make note of it in this bug report.