*** This bug is a duplicate of bug 1152484 ***
https://bugs.launchpad.net/bugs/1152484
Hi, I am using Arch linux with kernel 4.2 and the issue is still
present. It cause my one core to run 100% load withou any process using
it (htop) and draws my battery quickly :( I didn't had an issue with
kernel 3.13
AMD A8-4500M APU with Radeon(tm) HD Graphics
Log
```
Nov 26 16:30:25 NORMANDY kernel: ACPI: Preparing to enter system sleep state S3
Nov 26 16:30:25 NORMANDY kernel: ACPI : EC: EC stopped
Nov 26 16:30:25 NORMANDY kernel: PM: Saving platform NVS memory
Nov 26 16:30:25 NORMANDY kernel: Disabling non-boot CPUs ...
Nov 26 16:30:25 NORMANDY kernel: smpboot: CPU 1 is now offline
Nov 26 16:30:25 NORMANDY kernel: smpboot: CPU 2 is now offline
Nov 26 16:30:25 NORMANDY kernel: smpboot: CPU 3 is now offline
Nov 26 16:30:25 NORMANDY kernel: ACPI: Low-level resume complete
Nov 26 16:30:25 NORMANDY kernel: ACPI : EC: EC started
Nov 26 16:30:25 NORMANDY kernel: PM: Restoring platform NVS memory
Nov 26 16:30:25 NORMANDY kernel: Using NULL legacy PIC
Nov 26 16:30:25 NORMANDY kernel: LVT offset 0 assigned for vector 0x400
Nov 26 16:30:25 NORMANDY kernel: [Firmware Bug]: cpu 0, try to use APIC500 (LVT
offset 0) for vector 0xf9, but the register is already in use for vect
Nov 26 16:30:25 NORMANDY kernel: [Firmware Bug]: cpu 0, failed to setup
threshold interrupt for bank 4, block 0 (MSR00000413=0xc000000001000000)
Nov 26 16:30:25 NORMANDY kernel: [Firmware Bug]: cpu 0, try to use APIC500 (LVT
offset 0) for vector 0xf9, but the register is already in use for vect
Nov 26 16:30:25 NORMANDY kernel: [Firmware Bug]: cpu 0, failed to setup
threshold interrupt for bank 4, block 1 (MSRC0000408=0xc000000001000000)
Nov 26 16:30:25 NORMANDY kernel: Enabling non-boot CPUs ...
Nov 26 16:30:25 NORMANDY kernel: x86: Booting SMP configuration:
Nov 26 16:30:25 NORMANDY kernel: smpboot: Booting Node 0 Processor 1 APIC 0x11
Nov 26 16:30:25 NORMANDY kernel: [Firmware Info]: CPU: Re-enabling disabled
Topology Extensions Support.
Nov 26 16:30:25 NORMANDY kernel: cache: parent cpu1 should not be sleeping
Nov 26 16:30:25 NORMANDY kernel: CPU1 is up
Nov 26 16:30:25 NORMANDY kernel: smpboot: Booting Node 0 Processor 2 APIC 0x12
Nov 26 16:30:25 NORMANDY kernel: [Firmware Info]: CPU: Re-enabling disabled
Topology Extensions Support.
Nov 26 16:30:25 NORMANDY kernel: cache: parent cpu2 should not be sleeping
Nov 26 16:30:26 NORMANDY kernel: CPU2 is up
Nov 26 16:30:26 NORMANDY kernel: smpboot: Booting Node 0 Processor 3 APIC 0x13
Nov 26 16:30:26 NORMANDY kernel: [Firmware Info]: CPU: Re-enabling disabled
Topology Extensions Support.
Nov 26 16:30:26 NORMANDY kernel: cache: parent cpu3 should not be sleeping
Nov 26 16:30:26 NORMANDY kernel: CPU3 is up
Nov 26 16:30:26 NORMANDY kernel: ACPI: Waking up from system sleep state S3
Nov 26 16:30:26 NORMANDY kernel: ohci-pci 0000:00:12.0: System wakeup disabled
by ACPI
Nov 26 16:30:26 NORMANDY kernel: ohci-pci 0000:00:13.0: System wakeup disabled
by ACPI
Nov 26 16:30:26 NORMANDY kernel: xhci_hcd 0000:00:10.0: System wakeup disabled
by ACPI
Nov 26 16:30:26 NORMANDY kernel: xhci_hcd 0000:00:10.1: System wakeup disabled
by ACPI
Nov 26 16:30:26 NORMANDY kernel: PM: noirq resume of devices complete after
14.220 msecs
Nov 26 16:30:26 NORMANDY kernel: PM: early resume of devices complete after
0.393 msecs
Nov 26 16:30:26 NORMANDY kernel: sd 0:0:0:0: [sda] Starting disk
Nov 26 16:30:26 NORMANDY kernel: rtc_cmos 00:01: System wakeup disabled by ACPI
```
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https://bugs.launchpad.net/bugs/1416189
Title:
AMD [Firmware Bug]: cpu 0, try to use APIC500 (LVT offset 0) for
vector 0xf9, but the register is already in use for vector 0x400 on
another cpu
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