Re: CentOS 8 kernel-4.18.0-193 shim issue

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On 8/17/20 7:05 PM, david wrote:
> At 07:11 AM 8/17/2020, you wrote:
>> On 8/13/20 11:23 PM, Mark LaPierre wrote:
>> > Hey All,
>> >
>> > Is it safe to allow the 193 series kernel update now?  Last time I
>> tried
>> > that my system refused to boot.  I had to roll back to the 4.18.0-147
>> > kernel to get my machine to reboot.
>> >
>> > Since that happened I've been watching this mail list for
>> > acknowledgement that the problem has been corrected while refusing the
>> > kernel update.  I may have missed the announcement that the issue was
>> > resolved and the the update is now approved.
>> >
>>
>> It 'SHOULD' be good.  We announced it over the same weekend it was
>> broken.
>>
>> That does not mean every single combination of firmware, hardware, etc
>> on every possible machine frm every manufacturer will work.  But, we
>> have had no reports of failure since the updates.
> 
> 
> Ummmm..............
> 
> except for apple hardware.  My Mac-mini runs just file as long as this
> text:
>   exclude=grub2* shim* mokutil
> is added to the end of the file /etc/yum.conf
> 
> and executing
>   yum -y update
> and rebooting works just fine.  HOWEVER, if I remove that 'exclude' line
> from yum.conf, run 'yum update', and then reboot, the system is
> unbootable.  I end up with a blank screen, no grub anything.  I have
> also been unable to recover from this.  Therefore, that exclude line stays.
> 
> I'm sorry about the delay in responding; I wanted to verify this on a
> 'crash-and-burn' MacMini.
> 
Sure, but Apple actively TRIES to prevent any install other than their
software on Apple hardware.  That is certainly not something we support.

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