On Wed, Aug 27, 2025 at 01:56:50AM +0200, cybersnow_2...@tutamail.com wrote:
> Hello,
>
> Since Kernel 6.12, using PREEMPT_RT, I experience Kernel boot freeze issue.
> It doesn't kernel panic or any crash log at all.
> I'm using an old laptop IBM Intel Core 2 Duo T7700 Lenovo T61P from 2007 with
> a Nvidia 8400 integrated card.
> Non-RT kernels work fine.
>
> So, the freeze issue is random and it doesn't freeze at the same kernel
> loading position.
> Often, it freeze near The message:
>
> SMP Bringing Up Secondary CPU (CPU#1)
> OR
> Smpboot x86 Booting SMP configuration
>
>
> Do you think it has something to do with this bug? :
> https://lore.kernel.org/all/9acd5f9f-6732-7701-6880-4b51190aa...@huawei.com/
That bug happened during runtime rather than early boot, so I suspect
that you are seeing something else. From what I can see the fixes would
not affect early boot, but please feel free to try them out.
Thanx, Paul
