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
