My current issue on Oracle Linux 7.3 (kernel 4.1.12-61.1.18): I have only one processor or issue “Unsupported PM cap regs version (7)”. Impossible to boot without issue “Unsupported PM cap regs version (7)” and 8 processors.
To see the number of processor : cat /proc/cpuinfo | grep “model name”
My processor is : Intel(R) Xeon(R) CPU E5-2623 v3 @ 3.00GHz
All my test done :
| Tests | Status | Processor | Note | Grub parameter |
|---|---|---|---|---|
| 1 | OK | 1 | quiet splash noapic nolapic acpi=off | |
| 2 | OK | 1 | quiet acpi=off | |
| 3 | KO | Freeze : Unsupported PM cap regs version (7) | quiet | |
| 4 | KO | No boot | quiet splash pci=noacpi | |
| 5 | KO | Freeze : Unsupported PM cap regs version (7) | quiet acpi=off nr_cpus=8 | |
| 6 | KO | Freeze : Unsupported PM cap regs version (7) | quiet acpi=ht | |
| 7 | KO | Freeze : Unsupported PM cap regs version (7) | quiet acpi=noirq | |
| 8 | KO | Freeze : Unsupported PM cap regs version (7) | quiet pnpacpi=off | |
| 9 | KO | Freeze : Unsupported PM cap regs version (7) | quiet pcie_aspm=off | |
| 10 | KO | Freeze : Unsupported PM cap regs version (7) | quiet pci=noacpi | |
| 11 | KO | Freeze : Unsupported PM cap regs version (7) | quiet acpi=ht nolapic splash | |
| 12 | KO | Freeze : Unsupported PM cap regs version (7) | quiet acpi=ht pci=nocrs | |
| 13 | KO | Freeze : Unsupported PM cap regs version (7) | quiet acpi=ht acpi_osi=Linux | |
| 14 | OK | 1 | quiet idle=poll acpi=off | |
| 15 | OK | 1 | quiet idle=poll acpi=off processor.nocst=1 | |
| 16 | OK | 1 | quiet acpi=off processor.nocst=1 | |
| 17 | KO | Freeze : Unsupported PM cap regs version (7) | quiet acpi=ht acpi.nopower_check=1 acpi_osi=Linux | |
| 18 | OK | 1 | quiet acpi=off processor.nocst=1 maxcpus=8 | |
| 19 | OK | 1 | quiet intel_iommu=on acpi=off noapi | |
| 20 | KO | Freeze : Unsupported PM cap regs version (7) | quiet noapic pci=assign-busses apicmaintimer idle=poll reboot=cold,hard | |
| 21 | KO | Freeze : Unsupported PM cap regs version (7) | quiet pci=nomsi | |
| 22 | KO | Freeze : Unsupported PM cap regs version (7) | quiet pci=noaer | |
| 23 | KO | Freeze : Unsupported PM cap regs version (7) | quiet splash noapic nolapic acpi=ht pci=nocrs | |
| 24 | KO | Freeze : Unsupported PM cap regs version (7) | quiet splash noapic nolapic acpi=noirq pci=nocrs | |
| 25 | KO | Freeze : Unsupported PM cap regs version (7) | quiet splash nomodeset acpi_osi=Linux |
When I see the source code of pci.c :
