Bug ID: 199349
           Summary: System hangs on shutdown/reboot with newer kernel
           Product: ACPI
           Version: 2.5
    Kernel Version: >=4.8
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Power-Off
        Regression: No

I have a problem on my old Toshiba Satellite A210 laptop (AMD Turion X2 TL-64
with ATI Radeon HD2600 and 4GB ram); assuming that with Ubuntu 14.04 everything
works perfectly, testing any version between 16.04, 17.04 and 17.10beta, the
system always hangs on shutdown or reboot, remaining locked on the logo and
forcing me to hold down the power button to force it to poweroff.
If I use another version (the latest versions of 4.8, 4.9, 4.10, 4.12, 4.13),
errors go back and the system hangs again on shutdown or reboot.
I also noticed that using the grub nolapic option, the system turns off
properly, but the CPU is not recognized correctly (only 1 core detected) and
there are lags using the system; noapic has no effect, but other acpi options
(acpi = off or acpi = noirq and all other combinations) block the system at

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