Bug#1006149: linux-image-5.16.0-1-686: Fails to boot on T41 Thinkpads

[Salvatore Bonaccorso <carnil@debian.org>]

Hi,

On Thu, Apr 28, 2022 at 12:04:50AM +0200, Francesco C wrote:
> Hi ,
> 
> 5.16 series is EOL so I've just continued to do tests with vanilla
> linux-5.17.4 and linux-5.17.5 : both do not boot and stop at the same
> point as indicated in the messages above _but_ ... something strange
> is happening also with longterm 5.15 series since version 5.15.35 and
> 5.15.36 do not boot too.

Now this gives us probably a good hint!

https://bugzilla.kernel.org/show_bug.cgi?id=215909

d6b88ce2eb9d ("ACPI: processor idle: Allow playing dead in C3 state")
and a followup commit bfe55a1f7fd6 ("ACPI: processor: idle: fix lockup
regression on 32-bit ThinkPad T40") were both applied to 5.15.35. I
suspect the former is the one so which causes the regression as well
for you.

If someone can can check if reverting the commit d6b88ce2eb9d helps,
this might need a similar solution for your problem as it was done for
the ThinkPad T40.

Regards,
Salvatore