https://bugzilla.kernel.org/show_bug.cgi?id=203431
--- Comment #7 from Adam Grigolato (adam.grigol...@balcora.net) --- Another Update.. After much much debugging. There appears to be something up with ACPI reduced hardware support. This laptops FACP had its reduced hardware bit set. For whatever reason, if this is set, none of the clocksources setup properly. So when LAPIC calibration occurs. Specifically the line in apic.c [calibrate_APIC_clock] "real_handler = global_clock_event->event_handler;" Is where the null pointer dereference occurs. Interestingly when set, it also results in the hpet init to be broken by the looks (possibly also tsc_sync); only by the fact that the printk messages are oddly super short when reduced hardware is enabled; not containing any calibration information, but when not enabled.. they appear to be fine. With a modified FACP, I have now booted successfully with all cores. There are still issues, but at least there is that now :). -- You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ acpi-bugzilla mailing list acpi-bugzilla@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
