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 <tigran@aivazian.fsnet.co.uk>, 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): microcode_ctl-1.17-15.fc15 How reproducible: Perform a normal boot of the system. Steps to Reproduce: 1. Boot system. 2. 3. Actual results: No confirmation of updated CPU microcode. Expected results: Boot messages, visible in dmesg output or in /var/log/messages, indicating that CPU microcode was updated. Additional info: Upon request, of course.
microcode_ctl-1.17-16.fc15 has been submitted as an update for Fedora 15. https://admin.fedoraproject.org/updates/microcode_ctl-1.17-16.fc15
See details in bug 690930
Package microcode_ctl-1.17-16.fc15: * 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: https://admin.fedoraproject.org/updates/microcode_ctl-1.17-16.fc15 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.