It was just discovered that some buggy microcode fragments were mistakenly included in the last version Red Hat pulled into 4.7. Intel is posting a new version to downloadcenter.intel.com (search for "processor microcode", pick some recent processor, select Linux). The version should be 20080401. Version-Release number of selected component (if applicable): kernel-utils-2.4-13.1.112
Created attachment 299964 [details] updated microcode from 4/1/08 The intel.com site seems slow to update, so here's the file.
The buggy version can cause a hang when the microcode is loaded on Xeon boxes with family 15, model 2, stepping 2, and family 15, model 1, stepping 1.
Update prepared locally, pending mgt. approval.
Changes committed and built. However, we're just going to handle this under the original 4.7 microcode update bug. *** This bug has been marked as a duplicate of 431570 ***