[CentOS] Re: Going back to old kernels?

Scott Silva ssilva at sgvwater.com
Thu Dec 13 17:29:31 UTC 2007


on 12/13/2007 4:32 AM Kai Schaetzl spake the following:
> Christopher Chan wrote on Thu, 13 Dec 2007 07:42:27 +0800:
> 
>> I take it then that you do not have any third party modules then. In 
>> which case, it will be just fine to reboot with an older kernel. Just 
>> change the default entry set in grub.conf.
> 
> Changed last night and so far am fine. There's one difference to the new
> kernel. The old kernel cannot load the new microcode. The new microcode.dat
> seems not to correspond well with the older microcode.ko. It throws an error. 
> As I understand that is not a problem unless the CPU has a bug that manifests
> in my environment/usage.
> It's too early to say the crash problem is fixed, but I wonder if it
> is actually the new microcode that caused the problem. 
> 
> Kai
> 
You can temporarily move the new microcode, or just stop the microcode_ctl 
program from running if you want to test that.

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