Red Hat Bugzilla – Bug 183404
Kernel 2.6.15-1.1831_FC4smp only detecing 3 CPUs on a 4 CPU (HT) system
Last modified: 2015-01-04 17:25:41 EST
Description of problem:
On a dual Xeon 2.4GHz machine, with HT turned on, only 3 CPUs are found. Errors
in dmesg show symptoms (see attachment).
Version-Release number of selected component (if applicable):
Linux 2.6.15-1.1831_FC4smp #1 SMP Tue Feb 7 13:48:31 EST 2006 i686 i686 GNU/Linux
Steps to Reproduce:
1. Install Kernel 2.6.15-1.1831_FC4smp
3. Check dmesg log
Only 3 CPUs detected
4 CPUs detected
Created attachment 125424 [details]
dmesg Boot Log and /proc/cpuinfo
Is this still a problem on the 2.6.16 based kernels ?
If so, can you attach your dmesg ?
No, the problem only presented itself on kernel 2.6.15-1.1831_FC4smp. All
subsequent updates have worked as expected.